diff --git a/drivers/staging/wfx/bh.c b/drivers/staging/wfx/bh.c
index 78fa81d82517..e956b5a5ccac 100644
--- a/drivers/staging/wfx/bh.c
+++ b/drivers/staging/wfx/bh.c
@@ -32,18 +32,20 @@ static void device_wakeup(struct wfx_dev *wdev)
 	}
 	for (;;) {
 		gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 1);
-		// completion.h does not provide any function to wait
-		// completion without consume it (a kind of
-		// wait_for_completion_done_timeout()). So we have to emulate
-		// it.
+		/* completion.h does not provide any function to wait
+		 * completion without consume it (a kind of
+		 * wait_for_completion_done_timeout()). So we have to emulate
+		 * it.
+		 */
 		if (wait_for_completion_timeout(&wdev->hif.ctrl_ready,
 						msecs_to_jiffies(2))) {
 			complete(&wdev->hif.ctrl_ready);
 			return;
 		} else if (max_retry-- > 0) {
-			// Older firmwares have a race in sleep/wake-up process.
-			// Redo the process is sufficient to unfreeze the
-			// chip.
+			/* Older firmwares have a race in sleep/wake-up process.
+			 * Redo the process is sufficient to unfreeze the
+			 * chip.
+			 */
 			dev_err(wdev->dev, "timeout while wake up chip\n");
 			gpiod_set_value_cansleep(wdev->pdata.gpio_wakeup, 0);
 			usleep_range(2000, 2500);
@@ -74,7 +76,7 @@ static int rx_helper(struct wfx_dev *wdev, size_t read_len, int *is_cnf)
 	WARN(read_len > round_down(0xFFF, 2) * sizeof(u16),
 	     "%s: request exceed the chip capability", __func__);
 
-	// Add 2 to take into account piggyback size
+	/* Add 2 to take into account piggyback size */
 	alloc_len = wdev->hwbus_ops->align_size(wdev->hwbus_priv, read_len + 2);
 	skb = dev_alloc_skb(alloc_len);
 	if (!skb)
@@ -119,7 +121,7 @@ static int rx_helper(struct wfx_dev *wdev, size_t read_len, int *is_cnf)
 	}
 
 	skb_put(skb, le16_to_cpu(hif->len));
-	// wfx_handle_rx takes care on SKB livetime
+	/* wfx_handle_rx takes care on SKB livetime */
 	wfx_handle_rx(wdev, skb);
 	if (!wdev->hif.tx_buffers_used)
 		wake_up(&wdev->hif.tx_buffers_empty);
@@ -148,7 +150,7 @@ static int bh_work_rx(struct wfx_dev *wdev, int max_msg, int *num_cnf)
 			ctrl_reg = 0;
 		if (!(ctrl_reg & CTRL_NEXT_LEN_MASK))
 			return i;
-		// ctrl_reg units are 16bits words
+		/* ctrl_reg units are 16bits words */
 		len = (ctrl_reg & CTRL_NEXT_LEN_MASK) * 2;
 		piggyback = rx_helper(wdev, len, num_cnf);
 		if (piggyback < 0)
diff --git a/drivers/staging/wfx/bus_sdio.c b/drivers/staging/wfx/bus_sdio.c
index e06d7e1ebe9c..eb70bef6bd6e 100644
--- a/drivers/staging/wfx/bus_sdio.c
+++ b/drivers/staging/wfx/bus_sdio.c
@@ -67,7 +67,7 @@ static int wfx_sdio_copy_to_io(void *priv, unsigned int reg_id,
 	/* Use queue mode buffers */
 	if (reg_id == WFX_REG_IN_OUT_QUEUE)
 		sdio_addr |= bus->buf_id_tx << 7;
-	// FIXME: discards 'const' qualifier for src
+	/* FIXME: discards 'const' qualifier for src */
 	ret = sdio_memcpy_toio(bus->func, sdio_addr, (void *)src, count);
 	if (!ret && reg_id == WFX_REG_IN_OUT_QUEUE)
 		bus->buf_id_tx = (bus->buf_id_tx + 1) % 32;
@@ -198,7 +198,7 @@ static int wfx_sdio_probe(struct sdio_func *func,
 	} else {
 		dev_warn(&func->dev,
 			 "device is not declared in DT, features will be limited\n");
-		// FIXME: ignore VID/PID and only rely on device tree
+		/* FIXME: ignore VID/PID and only rely on device tree */
 		// return -ENODEV;
 	}
 
@@ -210,7 +210,7 @@ static int wfx_sdio_probe(struct sdio_func *func,
 
 	sdio_claim_host(func);
 	ret = sdio_enable_func(func);
-	// Block of 64 bytes is more efficient than 512B for frame sizes < 4k
+	/* Block of 64 bytes is more efficient than 512B for frame sizes < 4k */
 	sdio_set_block_size(func, 64);
 	sdio_release_host(func);
 	if (ret)
@@ -251,7 +251,7 @@ static void wfx_sdio_remove(struct sdio_func *func)
 #define SDIO_DEVICE_ID_SILABS_WF200  0x1000
 static const struct sdio_device_id wfx_sdio_ids[] = {
 	{ SDIO_DEVICE(SDIO_VENDOR_ID_SILABS, SDIO_DEVICE_ID_SILABS_WF200) },
-	// FIXME: ignore VID/PID and only rely on device tree
+	/* FIXME: ignore VID/PID and only rely on device tree */
 	// { SDIO_DEVICE(SDIO_ANY_ID, SDIO_ANY_ID) },
 	{ },
 };
diff --git a/drivers/staging/wfx/bus_spi.c b/drivers/staging/wfx/bus_spi.c
index 759e085048c3..61f73b3ebc80 100644
--- a/drivers/staging/wfx/bus_spi.c
+++ b/drivers/staging/wfx/bus_spi.c
@@ -86,7 +86,7 @@ static int wfx_spi_copy_to_io(void *priv, unsigned int addr,
 {
 	struct wfx_spi_priv *bus = priv;
 	u16 regaddr = (addr << 12) | (count / 2);
-	// FIXME: use a bounce buffer
+	/* FIXME: use a bounce buffer */
 	u16 *src16 = (void *)src;
 	int ret, i;
 	struct spi_message      m;
@@ -104,8 +104,9 @@ static int wfx_spi_copy_to_io(void *priv, unsigned int addr,
 
 	cpu_to_le16s(&regaddr);
 
-	// Register address and CONFIG content always use 16bit big endian
-	// ("BADC" order)
+	/* Register address and CONFIG content always use 16bit big endian
+	 * ("BADC" order)
+	 */
 	if (bus->need_swab)
 		swab16s(&regaddr);
 	if (bus->need_swab && addr == WFX_REG_CONFIG)
@@ -163,7 +164,8 @@ static int wfx_spi_irq_unsubscribe(void *priv)
 
 static size_t wfx_spi_align_size(void *priv, size_t size)
 {
-	// Most of SPI controllers avoid DMA if buffer size is not 32bit aligned
+	/* Most of SPI controllers avoid DMA if buffer size is not 32bit aligned
+	 */
 	return ALIGN(size, 4);
 }
 
@@ -187,7 +189,7 @@ static int wfx_spi_probe(struct spi_device *func)
 	ret = spi_setup(func);
 	if (ret)
 		return ret;
-	// Trace below is also displayed by spi_setup() if compiled with DEBUG
+	/* Trace below is also displayed by spi_setup() if compiled with DEBUG */
 	dev_dbg(&func->dev, "SPI params: CS=%d, mode=%d bits/word=%d speed=%d\n",
 		func->chip_select, func->mode, func->bits_per_word,
 		func->max_speed_hz);
diff --git a/drivers/staging/wfx/data_rx.c b/drivers/staging/wfx/data_rx.c
index 509f45cdbab9..bfc3961b7b89 100644
--- a/drivers/staging/wfx/data_rx.c
+++ b/drivers/staging/wfx/data_rx.c
@@ -76,8 +76,9 @@ void wfx_rx_cb(struct wfx_vif *wvif,
 	if (arg->encryp)
 		hdr->flag |= RX_FLAG_DECRYPTED;
 
-	// Block ack negotiation is offloaded by the firmware. However,
-	// re-ordering must be done by the mac80211.
+	/* Block ack negotiation is offloaded by the firmware. However,
+	 * re-ordering must be done by the mac80211.
+	 */
 	if (ieee80211_is_action(frame->frame_control) &&
 	    mgmt->u.action.category == WLAN_CATEGORY_BACK &&
 	    skb->len > IEEE80211_MIN_ACTION_SIZE) {
diff --git a/drivers/staging/wfx/data_tx.c b/drivers/staging/wfx/data_tx.c
index 04241422edc8..052a19161dc5 100644
--- a/drivers/staging/wfx/data_tx.c
+++ b/drivers/staging/wfx/data_tx.c
@@ -31,8 +31,9 @@ static int wfx_get_hw_rate(struct wfx_dev *wdev,
 		}
 		return rate->idx + 14;
 	}
-	// The device only support 2GHz, else band information should be
-	// retrieved from ieee80211_tx_info
+	/* The device only support 2GHz, else band information should be
+	 * retrieved from ieee80211_tx_info
+	 */
 	band = wdev->hw->wiphy->bands[NL80211_BAND_2GHZ];
 	if (rate->idx >= band->n_bitrates) {
 		WARN(1, "wrong rate->idx value: %d", rate->idx);
@@ -57,7 +58,7 @@ static void wfx_tx_policy_build(struct wfx_vif *wvif, struct tx_policy *policy,
 			break;
 		WARN_ON(rates[i].count > 15);
 		rateid = wfx_get_hw_rate(wdev, &rates[i]);
-		// Pack two values in each byte of policy->rates
+		/* Pack two values in each byte of policy->rates */
 		count = rates[i].count;
 		if (rateid % 2)
 			count <<= 4;
@@ -238,7 +239,7 @@ static void wfx_tx_fixup_rates(struct ieee80211_tx_rate *rates)
 	int i;
 	bool finished;
 
-	// Firmware is not able to mix rates with different flags
+	/* Firmware is not able to mix rates with different flags */
 	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 		if (rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
 			rates[i].flags |= IEEE80211_TX_RC_SHORT_GI;
@@ -248,7 +249,7 @@ static void wfx_tx_fixup_rates(struct ieee80211_tx_rate *rates)
 			rates[i].flags &= ~IEEE80211_TX_RC_USE_RTS_CTS;
 	}
 
-	// Sort rates and remove duplicates
+	/* Sort rates and remove duplicates */
 	do {
 		finished = true;
 		for (i = 0; i < IEEE80211_TX_MAX_RATES - 1; i++) {
@@ -268,19 +269,19 @@ static void wfx_tx_fixup_rates(struct ieee80211_tx_rate *rates)
 			}
 		}
 	} while (!finished);
-	// Ensure that MCS0 or 1Mbps is present at the end of the retry list
+	/* Ensure that MCS0 or 1Mbps is present at the end of the retry list */
 	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 		if (rates[i].idx == 0)
 			break;
 		if (rates[i].idx == -1) {
 			rates[i].idx = 0;
-			rates[i].count = 8; // == hw->max_rate_tries
+			rates[i].count = 8; /* == hw->max_rate_tries */
 			rates[i].flags = rates[i - 1].flags &
 					 IEEE80211_TX_RC_MCS;
 			break;
 		}
 	}
-	// All retries use long GI
+	/* All retries use long GI */
 	for (i = 1; i < IEEE80211_TX_MAX_RATES; i++)
 		rates[i].flags &= ~IEEE80211_TX_RC_SHORT_GI;
 }
@@ -342,13 +343,13 @@ static int wfx_tx_inner(struct wfx_vif *wvif, struct ieee80211_sta *sta,
 	WARN(queue_id >= IEEE80211_NUM_ACS, "unsupported queue_id");
 	wfx_tx_fixup_rates(tx_info->driver_rates);
 
-	// From now tx_info->control is unusable
+	/* From now tx_info->control is unusable */
 	memset(tx_info->rate_driver_data, 0, sizeof(struct wfx_tx_priv));
-	// Fill tx_priv
+	/* Fill tx_priv */
 	tx_priv = (struct wfx_tx_priv *)tx_info->rate_driver_data;
 	tx_priv->icv_size = wfx_tx_get_icv_len(hw_key);
 
-	// Fill hif_msg
+	/* Fill hif_msg */
 	WARN(skb_headroom(skb) < wmsg_len, "not enough space in skb");
 	WARN(offset & 1, "attempt to transmit an unaligned frame");
 	skb_put(skb, tx_priv->icv_size);
@@ -366,17 +367,18 @@ static int wfx_tx_inner(struct wfx_vif *wvif, struct ieee80211_sta *sta,
 		return -EIO;
 	}
 
-	// Fill tx request
+	/* Fill tx request */
 	req = (struct hif_req_tx *)hif_msg->body;
-	// packet_id just need to be unique on device. 32bits are more than
-	// necessary for that task, so we tae advantage of it to add some extra
-	// data for debug.
+	/* packet_id just need to be unique on device. 32bits are more than
+	 * necessary for that task, so we tae advantage of it to add some extra
+	 * data for debug.
+	 */
 	req->packet_id = atomic_add_return(1, &wvif->wdev->packet_id) & 0xFFFF;
 	req->packet_id |= IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)) << 16;
 	req->packet_id |= queue_id << 28;
 
 	req->fc_offset = offset;
-	// Queue index are inverted between firmware and Linux
+	/* Queue index are inverted between firmware and Linux */
 	req->queue_id = 3 - queue_id;
 	req->peer_sta_id = wfx_tx_get_link_id(wvif, sta, hdr);
 	req->retry_policy_index = wfx_tx_get_retry_policy_id(wvif, tx_info);
@@ -386,7 +388,7 @@ static int wfx_tx_inner(struct wfx_vif *wvif, struct ieee80211_sta *sta,
 	if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM)
 		req->after_dtim = 1;
 
-	// Auxiliary operations
+	/* Auxiliary operations */
 	wfx_tx_queues_put(wvif, skb);
 	if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM)
 		schedule_work(&wvif->update_tim_work);
@@ -408,15 +410,16 @@ void wfx_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control,
 	compiletime_assert(sizeof(struct wfx_tx_priv) <= driver_data_room,
 			   "struct tx_priv is too large");
 	WARN(skb->next || skb->prev, "skb is already member of a list");
-	// control.vif can be NULL for injected frames
+	/* control.vif can be NULL for injected frames */
 	if (tx_info->control.vif)
 		wvif = (struct wfx_vif *)tx_info->control.vif->drv_priv;
 	else
 		wvif = wvif_iterate(wdev, NULL);
 	if (WARN_ON(!wvif))
 		goto drop;
-	// Because of TX_AMPDU_SETUP_IN_HW, mac80211 does not try to send any
-	// BlockAck session management frame. The check below exist just in case.
+	/* Because of TX_AMPDU_SETUP_IN_HW, mac80211 does not try to send any
+	 * BlockAck session management frame. The check below exist just in case.
+	 */
 	if (ieee80211_is_action_back(hdr)) {
 		dev_info(wdev->dev, "drop BA action\n");
 		goto drop;
@@ -457,7 +460,7 @@ static void wfx_tx_fill_rates(struct wfx_dev *wdev,
 
 	tx_count = arg->ack_failures;
 	if (!arg->status || arg->ack_failures)
-		tx_count += 1; // Also report success
+		tx_count += 1; /* Also report success */
 	for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
 		rate = &tx_info->status.rates[i];
 		if (rate->idx < 0)
@@ -505,14 +508,15 @@ void wfx_tx_confirm_cb(struct wfx_dev *wdev, const struct hif_cnf_tx *arg)
 	if (!wvif)
 		return;
 
-	// Note that wfx_pending_get_pkt_us_delay() get data from tx_info
+	/* Note that wfx_pending_get_pkt_us_delay() get data from tx_info */
 	_trace_tx_stats(arg, skb, wfx_pending_get_pkt_us_delay(wdev, skb));
 	wfx_tx_fill_rates(wdev, tx_info, arg);
 	skb_trim(skb, skb->len - tx_priv->icv_size);
 
-	// From now, you can touch to tx_info->status, but do not touch to
-	// tx_priv anymore
-	// FIXME: use ieee80211_tx_info_clear_status()
+	/* From now, you can touch to tx_info->status, but do not touch to
+	 * tx_priv anymore
+	 */
+	/* FIXME: use ieee80211_tx_info_clear_status() */
 	memset(tx_info->rate_driver_data, 0, sizeof(tx_info->rate_driver_data));
 	memset(tx_info->pad, 0, sizeof(tx_info->pad));
 
@@ -527,7 +531,7 @@ void wfx_tx_confirm_cb(struct wfx_dev *wdev, const struct hif_cnf_tx *arg)
 	} else if (arg->status == HIF_STATUS_TX_FAIL_REQUEUE) {
 		WARN(!arg->requeue, "incoherent status and result_flags");
 		if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
-			wvif->after_dtim_tx_allowed = false; // DTIM period elapsed
+			wvif->after_dtim_tx_allowed = false; /* DTIM period elapsed */
 			schedule_work(&wvif->update_tim_work);
 		}
 		tx_info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
diff --git a/drivers/staging/wfx/data_tx.h b/drivers/staging/wfx/data_tx.h
index 7dcc9132d7cd..dafd8fef44cf 100644
--- a/drivers/staging/wfx/data_tx.h
+++ b/drivers/staging/wfx/data_tx.h
@@ -27,7 +27,7 @@ struct tx_policy {
 
 struct tx_policy_cache {
 	struct tx_policy cache[HIF_TX_RETRY_POLICY_MAX];
-	// FIXME: use a trees and drop hash from tx_policy
+	/* FIXME: use a trees and drop hash from tx_policy */
 	struct list_head used;
 	struct list_head free;
 	spinlock_t lock;
diff --git a/drivers/staging/wfx/debug.c b/drivers/staging/wfx/debug.c
index 16c3f55f1a3d..9f93268a3202 100644
--- a/drivers/staging/wfx/debug.c
+++ b/drivers/staging/wfx/debug.c
@@ -256,9 +256,10 @@ static ssize_t wfx_send_hif_msg_write(struct file *file,
 	if (count < sizeof(struct hif_msg))
 		return -EINVAL;
 
-	// wfx_cmd_send() checks that reply buffer is wide enough, but does not
-	// return precise length read. User have to know how many bytes should
-	// be read. Filling reply buffer with a memory pattern may help user.
+	/* wfx_cmd_send() checks that reply buffer is wide enough, but does not
+	 * return precise length read. User have to know how many bytes should
+	 * be read. Filling reply buffer with a memory pattern may help user.
+	 */
 	memset(context->reply, 0xFF, sizeof(context->reply));
 	request = memdup_user(user_buf, count);
 	if (IS_ERR(request))
@@ -288,8 +289,9 @@ static ssize_t wfx_send_hif_msg_read(struct file *file, char __user *user_buf,
 		return ret;
 	if (context->ret < 0)
 		return context->ret;
-	// Be careful, write() is waiting for a full message while read()
-	// only returns a payload
+	/* Be careful, write() is waiting for a full message while read()
+	 * only returns a payload
+	 */
 	if (copy_to_user(user_buf, context->reply, count))
 		return -EFAULT;
 
diff --git a/drivers/staging/wfx/fwio.c b/drivers/staging/wfx/fwio.c
index 7b91ac615f4a..c5ba0a50b474 100644
--- a/drivers/staging/wfx/fwio.c
+++ b/drivers/staging/wfx/fwio.c
@@ -14,11 +14,11 @@
 #include "wfx.h"
 #include "hwio.h"
 
-// Addresses below are in SRAM area
+/* Addresses below are in SRAM area */
 #define WFX_DNLD_FIFO             0x09004000
 #define     DNLD_BLOCK_SIZE           0x0400
-#define     DNLD_FIFO_SIZE            0x8000 // (32 * DNLD_BLOCK_SIZE)
-// Download Control Area (DCA)
+#define     DNLD_FIFO_SIZE            0x8000 /* (32 * DNLD_BLOCK_SIZE) */
+/* Download Control Area (DCA) */
 #define WFX_DCA_IMAGE_SIZE        0x0900C000
 #define WFX_DCA_PUT               0x0900C004
 #define WFX_DCA_GET               0x0900C008
@@ -58,8 +58,8 @@
 #define     ERR_ECC_PUB_KEY           0x11
 #define     ERR_MAC_KEY               0x18
 
-#define DCA_TIMEOUT  50 // milliseconds
-#define WAKEUP_TIMEOUT 200 // milliseconds
+#define DCA_TIMEOUT  50 /* milliseconds */
+#define WAKEUP_TIMEOUT 200 /* milliseconds */
 
 static const char * const fwio_errors[] = {
 	[ERR_INVALID_SEC_TYPE] = "Invalid section type or wrong encryption",
@@ -125,7 +125,7 @@ static int get_firmware(struct wfx_dev *wdev, u32 keyset_chip,
 
 	data = (*fw)->data;
 	if (memcmp(data, "KEYSET", 6) != 0) {
-		// Legacy firmware format
+		/* Legacy firmware format */
 		*file_offset = 0;
 		keyset_file = 0x90;
 	} else {
@@ -207,8 +207,9 @@ static int upload_firmware(struct wfx_dev *wdev, const u8 *data, size_t len)
 		if (ret < 0)
 			return ret;
 
-		// The device seems to not support writing 0 in this register
-		// during first loop
+		/* The device seems to not support writing 0 in this register
+		 * during first loop
+		 */
 		offs += DNLD_BLOCK_SIZE;
 		ret = sram_reg_write(wdev, WFX_DCA_PUT, offs);
 		if (ret < 0)
@@ -265,7 +266,7 @@ static int load_firmware_secure(struct wfx_dev *wdev)
 	if (ret)
 		goto error;
 
-	sram_reg_write(wdev, WFX_DNLD_FIFO, 0xFFFFFFFF); // Fifo init
+	sram_reg_write(wdev, WFX_DNLD_FIFO, 0xFFFFFFFF); /* Fifo init */
 	sram_write_dma_safe(wdev, WFX_DCA_FW_VERSION, "\x01\x00\x00\x00",
 			    FW_VERSION_SIZE);
 	sram_write_dma_safe(wdev, WFX_DCA_FW_SIGNATURE, fw->data + fw_offset,
@@ -289,7 +290,7 @@ static int load_firmware_secure(struct wfx_dev *wdev)
 
 	sram_reg_write(wdev, WFX_DCA_HOST_STATUS, HOST_UPLOAD_COMPLETE);
 	ret = wait_ncp_status(wdev, NCP_AUTH_OK);
-	// Legacy ROM support
+	/* Legacy ROM support */
 	if (ret < 0)
 		ret = wait_ncp_status(wdev, NCP_PUB_KEY_RDY);
 	if (ret < 0)
@@ -334,7 +335,7 @@ int wfx_init_device(struct wfx_dev *wdev)
 {
 	int ret;
 	int hw_revision, hw_type;
-	int wakeup_timeout = 50; // ms
+	int wakeup_timeout = 50; /* ms */
 	ktime_t now, start;
 	u32 reg;
 
diff --git a/drivers/staging/wfx/hif_api_cmd.h b/drivers/staging/wfx/hif_api_cmd.h
index 553dc45142f2..b0aa13b23a51 100644
--- a/drivers/staging/wfx/hif_api_cmd.h
+++ b/drivers/staging/wfx/hif_api_cmd.h
@@ -134,7 +134,7 @@ struct hif_req_start_scan_alt {
 	u8     num_of_channels;
 	__le32 min_channel_time;
 	__le32 max_channel_time;
-	__le32 tx_power_level; // signed value
+	__le32 tx_power_level; /* signed value */
 	struct hif_ssid_def ssid_def[HIF_API_MAX_NB_SSIDS];
 	u8     channel_list[];
 } __packed;
@@ -174,8 +174,9 @@ enum hif_frame_format {
 };
 
 struct hif_req_tx {
-	// packet_id is not interpreted by the device, so it is not necessary to
-	// declare it little endian
+	/* packet_id is not interpreted by the device, so it is not necessary to
+	 * declare it little endian
+	 */
 	u32    packet_id;
 	u8     max_tx_rate;
 	u8     queue_id:2;
@@ -211,8 +212,9 @@ enum hif_qos_ackplcy {
 
 struct hif_cnf_tx {
 	__le32 status;
-	// packet_id is copied from struct hif_req_tx without been interpreted
-	// by the device, so it is not necessary to declare it little endian
+	/* packet_id is copied from struct hif_req_tx without been interpreted
+	 * by the device, so it is not necessary to declare it little endian
+	 */
 	u32    packet_id;
 	u8     txed_rate;
 	u8     ack_failures;
diff --git a/drivers/staging/wfx/hif_api_general.h b/drivers/staging/wfx/hif_api_general.h
index 714e1dd808e6..5f74f829b7df 100644
--- a/drivers/staging/wfx/hif_api_general.h
+++ b/drivers/staging/wfx/hif_api_general.h
@@ -114,9 +114,10 @@ enum hif_api_rate_index {
 };
 
 struct hif_ind_startup {
-	// As the others, this struct is interpreted as little endian by the
-	// device. However, this struct is also used by the driver. We prefer to
-	// declare it in native order and doing byte swap on reception.
+	/* As the others, this struct is interpreted as little endian by the
+	 * device. However, this struct is also used by the driver. We prefer to
+	 * declare it in native order and doing byte swap on reception.
+	 */
 	__le32 status;
 	u16    hardware_id;
 	u8     opn[14];
@@ -193,9 +194,9 @@ struct hif_rx_stats {
 	__le32 throughput;
 	__le32 nb_rx_by_rate[API_RATE_NUM_ENTRIES];
 	__le16 per[API_RATE_NUM_ENTRIES];
-	__le16 snr[API_RATE_NUM_ENTRIES];  // signed value
-	__le16 rssi[API_RATE_NUM_ENTRIES]; // signed value
-	__le16 cfo[API_RATE_NUM_ENTRIES];  // signed value
+	__le16 snr[API_RATE_NUM_ENTRIES];  /* signed value */
+	__le16 rssi[API_RATE_NUM_ENTRIES]; /* signed value */
+	__le16 cfo[API_RATE_NUM_ENTRIES];  /* signed value */
 	__le32 date;
 	__le32 pwr_clk_freq;
 	u8     is_ext_pwr_clk;
@@ -205,8 +206,8 @@ struct hif_rx_stats {
 struct hif_tx_power_loop_info {
 	__le16 tx_gain_dig;
 	__le16 tx_gain_pa;
-	__le16 target_pout; // signed value
-	__le16 p_estimation; // signed value
+	__le16 target_pout; /* signed value */
+	__le16 p_estimation; /* signed value */
 	__le16 vpdet;
 	u8     measurement_index;
 	u8     reserved;
diff --git a/drivers/staging/wfx/hif_api_mib.h b/drivers/staging/wfx/hif_api_mib.h
index b76f19224b5a..da534f244757 100644
--- a/drivers/staging/wfx/hif_api_mib.h
+++ b/drivers/staging/wfx/hif_api_mib.h
@@ -209,7 +209,7 @@ struct hif_mib_slot_time {
 } __packed;
 
 struct hif_mib_current_tx_power_level {
-	__le32 power_level; // signed value
+	__le32 power_level; /* signed value */
 } __packed;
 
 struct hif_mib_non_erp_protection {
diff --git a/drivers/staging/wfx/hif_rx.c b/drivers/staging/wfx/hif_rx.c
index fcfd5ccc9f01..6963b54d5593 100644
--- a/drivers/staging/wfx/hif_rx.c
+++ b/drivers/staging/wfx/hif_rx.c
@@ -19,10 +19,10 @@
 static int hif_generic_confirm(struct wfx_dev *wdev,
 			       const struct hif_msg *hif, const void *buf)
 {
-	// All confirm messages start with status
+	/* All confirm messages start with status */
 	int status = le32_to_cpup((__le32 *)buf);
 	int cmd = hif->id;
-	int len = le16_to_cpu(hif->len) - 4; // drop header
+	int len = le16_to_cpu(hif->len) - 4; /* drop header */
 
 	WARN(!mutex_is_locked(&wdev->hif_cmd.lock), "data locking error");
 
@@ -244,7 +244,7 @@ static int hif_generic_indication(struct wfx_dev *wdev,
 		return 0;
 	case HIF_GENERIC_INDICATION_TYPE_RX_STATS:
 		mutex_lock(&wdev->rx_stats_lock);
-		// Older firmware send a generic indication beside RxStats
+		/* Older firmware send a generic indication beside RxStats */
 		if (!wfx_api_older_than(wdev, 1, 4))
 			dev_info(wdev->dev, "Rx test ongoing. Temperature: %d degrees C\n",
 				 body->data.rx_stats.current_temp);
@@ -297,7 +297,7 @@ static const struct {
 		"bus clock is too slow (<1kHz)" },
 	{ HIF_ERROR_HIF_RX_DATA_TOO_LARGE,
 		"HIF message too large" },
-	// Following errors only exists in old firmware versions:
+	/* Following errors only exists in old firmware versions: */
 	{ HIF_ERROR_HIF_TX_QUEUE_FULL,
 		"HIF messages queue is full" },
 	{ HIF_ERROR_HIF_BUS,
@@ -374,7 +374,7 @@ static const struct {
 	{ HIF_IND_ID_GENERIC,              hif_generic_indication },
 	{ HIF_IND_ID_ERROR,                hif_error_indication },
 	{ HIF_IND_ID_EXCEPTION,            hif_exception_indication },
-	// FIXME: allocate skb_p from hif_receive_indication and make it generic
+	/* FIXME: allocate skb_p from hif_receive_indication and make it generic */
 	//{ HIF_IND_ID_RX,                 hif_receive_indication },
 };
 
@@ -385,12 +385,13 @@ void wfx_handle_rx(struct wfx_dev *wdev, struct sk_buff *skb)
 	int hif_id = hif->id;
 
 	if (hif_id == HIF_IND_ID_RX) {
-		// hif_receive_indication take care of skb lifetime
+		/* hif_receive_indication take care of skb lifetime */
 		hif_receive_indication(wdev, hif, hif->body, skb);
 		return;
 	}
-	// Note: mutex_is_lock cause an implicit memory barrier that protect
-	// buf_send
+	/* Note: mutex_is_lock cause an implicit memory barrier that protect
+	 * buf_send
+	 */
 	if (mutex_is_locked(&wdev->hif_cmd.lock) &&
 	    wdev->hif_cmd.buf_send &&
 	    wdev->hif_cmd.buf_send->id == hif_id) {
diff --git a/drivers/staging/wfx/hif_tx.c b/drivers/staging/wfx/hif_tx.c
index c1c97945317e..2fd8bbd36e25 100644
--- a/drivers/staging/wfx/hif_tx.c
+++ b/drivers/staging/wfx/hif_tx.c
@@ -55,15 +55,16 @@ int wfx_cmd_send(struct wfx_dev *wdev, struct hif_msg *request,
 	int vif = request->interface;
 	int ret;
 
-	// Do not wait for any reply if chip is frozen
+	/* Do not wait for any reply if chip is frozen */
 	if (wdev->chip_frozen)
 		return -ETIMEDOUT;
 
 	mutex_lock(&wdev->hif_cmd.lock);
 	WARN(wdev->hif_cmd.buf_send, "data locking error");
 
-	// Note: call to complete() below has an implicit memory barrier that
-	// hopefully protect buf_send
+	/* Note: call to complete() below has an implicit memory barrier that
+	 * hopefully protect buf_send
+	 */
 	wdev->hif_cmd.buf_send = request;
 	wdev->hif_cmd.buf_recv = reply;
 	wdev->hif_cmd.len_recv = reply_len;
@@ -72,8 +73,9 @@ int wfx_cmd_send(struct wfx_dev *wdev, struct hif_msg *request,
 	wfx_bh_request_tx(wdev);
 
 	if (no_reply) {
-		// Chip won't reply. Give enough time to the wq to send the
-		// buffer.
+		/* Chip won't reply. Give enough time to the wq to send the
+		 * buffer.
+		 */
 		msleep(100);
 		wdev->hif_cmd.buf_send = NULL;
 		mutex_unlock(&wdev->hif_cmd.lock);
@@ -117,8 +119,9 @@ int wfx_cmd_send(struct wfx_dev *wdev, struct hif_msg *request,
 	return ret;
 }
 
-// This function is special. After HIF_REQ_ID_SHUT_DOWN, chip won't reply to any
-// request anymore. Obviously, only call this function during device unregister.
+/* This function is special. After HIF_REQ_ID_SHUT_DOWN, chip won't reply to any
+ * request anymore. Obviously, only call this function during device unregister.
+ */
 int hif_shutdown(struct wfx_dev *wdev)
 {
 	int ret;
@@ -277,7 +280,7 @@ int hif_stop_scan(struct wfx_vif *wvif)
 {
 	int ret;
 	struct hif_msg *hif;
-	// body associated to HIF_REQ_ID_STOP_SCAN is empty
+	/* body associated to HIF_REQ_ID_STOP_SCAN is empty */
 	wfx_alloc_hif(0, &hif);
 
 	if (!hif)
@@ -341,16 +344,17 @@ int hif_add_key(struct wfx_dev *wdev, const struct hif_req_add_key *arg)
 {
 	int ret;
 	struct hif_msg *hif;
-	// FIXME: only send necessary bits
+	/* FIXME: only send necessary bits */
 	struct hif_req_add_key *body = wfx_alloc_hif(sizeof(*body), &hif);
 
 	if (!hif)
 		return -ENOMEM;
-	// FIXME: swap bytes as necessary in body
+	/* FIXME: swap bytes as necessary in body */
 	memcpy(body, arg, sizeof(*body));
 	if (wfx_api_older_than(wdev, 1, 5))
-		// Legacy firmwares expect that add_key to be sent on right
-		// interface.
+		/* Legacy firmwares expect that add_key to be sent on right
+		 * interface.
+		 */
 		wfx_fill_header(hif, arg->int_id, HIF_REQ_ID_ADD_KEY,
 				sizeof(*body));
 	else
@@ -394,7 +398,7 @@ int hif_set_edca_queue_params(struct wfx_vif *wvif, u16 queue,
 	body->cw_max = cpu_to_le16(arg->cw_max);
 	body->tx_op_limit = cpu_to_le16(arg->txop * USEC_PER_TXOP);
 	body->queue_id = 3 - queue;
-	// API 2.0 has changed queue IDs values
+	/* API 2.0 has changed queue IDs values */
 	if (wfx_api_older_than(wvif->wdev, 2, 0) && queue == IEEE80211_AC_BE)
 		body->queue_id = HIF_QUEUE_ID_BACKGROUND;
 	if (wfx_api_older_than(wvif->wdev, 2, 0) && queue == IEEE80211_AC_BK)
@@ -419,7 +423,7 @@ int hif_set_pm(struct wfx_vif *wvif, bool ps, int dynamic_ps_timeout)
 		return -ENOMEM;
 	if (ps) {
 		body->enter_psm = 1;
-		// Firmware does not support more than 128ms
+		/* Firmware does not support more than 128ms */
 		body->fast_psm_idle_period = min(dynamic_ps_timeout * 2, 255);
 		if (body->fast_psm_idle_period)
 			body->fast_psm = 1;
diff --git a/drivers/staging/wfx/hif_tx_mib.c b/drivers/staging/wfx/hif_tx_mib.c
index c745271944e9..45e531d996bd 100644
--- a/drivers/staging/wfx/hif_tx_mib.c
+++ b/drivers/staging/wfx/hif_tx_mib.c
@@ -68,7 +68,7 @@ int hif_get_counters_table(struct wfx_dev *wdev, int vif_id,
 			   struct hif_mib_extended_count_table *arg)
 {
 	if (wfx_api_older_than(wdev, 1, 3)) {
-		// extended_count_table is wider than count_table
+		/* extended_count_table is wider than count_table */
 		memset(arg, 0xFF, sizeof(*arg));
 		return hif_read_mib(wdev, vif_id, HIF_MIB_ID_COUNTERS_TABLE,
 				    arg, sizeof(struct hif_mib_count_table));
@@ -246,7 +246,7 @@ int hif_set_arp_ipv4_filter(struct wfx_vif *wvif, int idx, __be32 *addr)
 	};
 
 	if (addr) {
-		// Caution: type of addr is __be32
+		/* Caution: type of addr is __be32 */
 		memcpy(arg.ipv4_address, addr, sizeof(arg.ipv4_address));
 		arg.arp_enable = HIF_ARP_NS_FILTERING_ENABLE;
 	}
diff --git a/drivers/staging/wfx/hwio.c b/drivers/staging/wfx/hwio.c
index 36fbc5b5d64c..30eb888830d2 100644
--- a/drivers/staging/wfx/hwio.c
+++ b/drivers/staging/wfx/hwio.c
@@ -31,7 +31,7 @@ static int read32(struct wfx_dev *wdev, int reg, u32 *val)
 	int ret;
 	__le32 *tmp = kmalloc(sizeof(u32), GFP_KERNEL);
 
-	*val = ~0; // Never return undefined value
+	*val = ~0; /* Never return undefined value */
 	if (!tmp)
 		return -ENOMEM;
 	ret = wdev->hwbus_ops->copy_from_io(wdev->hwbus_priv, reg, tmp,
@@ -153,7 +153,7 @@ static int indirect_read(struct wfx_dev *wdev, int reg, u32 addr,
 
 err:
 	if (ret < 0)
-		memset(buf, 0xFF, len); // Never return undefined value
+		memset(buf, 0xFF, len); /* Never return undefined value */
 	return ret;
 }
 
@@ -335,7 +335,7 @@ int igpr_reg_read(struct wfx_dev *wdev, int index, u32 *val)
 {
 	int ret;
 
-	*val = ~0; // Never return undefined value
+	*val = ~0; /* Never return undefined value */
 	ret = write32_locked(wdev, WFX_REG_SET_GEN_R_W, IGPR_RW | index << 24);
 	if (ret)
 		return ret;
diff --git a/drivers/staging/wfx/hwio.h b/drivers/staging/wfx/hwio.h
index 5e43993b14d8..9a361ed95ecb 100644
--- a/drivers/staging/wfx/hwio.h
+++ b/drivers/staging/wfx/hwio.h
@@ -27,30 +27,30 @@ int sram_reg_write(struct wfx_dev *wdev, u32 addr, u32 val);
 int ahb_reg_read(struct wfx_dev *wdev, u32 addr, u32 *val);
 int ahb_reg_write(struct wfx_dev *wdev, u32 addr, u32 val);
 
-#define CFG_ERR_SPI_FRAME          0x00000001 // only with SPI
-#define CFG_ERR_SDIO_BUF_MISMATCH  0x00000001 // only with SDIO
+#define CFG_ERR_SPI_FRAME          0x00000001 /* only with SPI */
+#define CFG_ERR_SDIO_BUF_MISMATCH  0x00000001 /* only with SDIO */
 #define CFG_ERR_BUF_UNDERRUN       0x00000002
 #define CFG_ERR_DATA_IN_TOO_LARGE  0x00000004
 #define CFG_ERR_HOST_NO_OUT_QUEUE  0x00000008
 #define CFG_ERR_BUF_OVERRUN        0x00000010
 #define CFG_ERR_DATA_OUT_TOO_LARGE 0x00000020
 #define CFG_ERR_HOST_NO_IN_QUEUE   0x00000040
-#define CFG_ERR_HOST_CRC_MISS      0x00000080 // only with SDIO
-#define CFG_SPI_IGNORE_CS          0x00000080 // only with SPI
-#define CFG_BYTE_ORDER_MASK        0x00000300 // only writable with SPI
+#define CFG_ERR_HOST_CRC_MISS      0x00000080 /* only with SDIO */
+#define CFG_SPI_IGNORE_CS          0x00000080 /* only with SPI */
+#define CFG_BYTE_ORDER_MASK        0x00000300 /* only writable with SPI */
 #define     CFG_BYTE_ORDER_BADC    0x00000000
 #define     CFG_BYTE_ORDER_DCBA    0x00000100
-#define     CFG_BYTE_ORDER_ABCD    0x00000200 // SDIO always use this value
+#define     CFG_BYTE_ORDER_ABCD    0x00000200 /* SDIO always use this value */
 #define CFG_DIRECT_ACCESS_MODE     0x00000400
 #define CFG_PREFETCH_AHB           0x00000800
 #define CFG_DISABLE_CPU_CLK        0x00001000
 #define CFG_PREFETCH_SRAM          0x00002000
 #define CFG_CPU_RESET              0x00004000
-#define CFG_SDIO_DISABLE_IRQ       0x00008000 // only with SDIO
+#define CFG_SDIO_DISABLE_IRQ       0x00008000 /* only with SDIO */
 #define CFG_IRQ_ENABLE_DATA        0x00010000
 #define CFG_IRQ_ENABLE_WRDY        0x00020000
 #define CFG_CLK_RISE_EDGE          0x00040000
-#define CFG_SDIO_DISABLE_CRC_CHK   0x00080000 // only with SDIO
+#define CFG_SDIO_DISABLE_CRC_CHK   0x00080000 /* only with SDIO */
 #define CFG_RESERVED               0x00F00000
 #define CFG_DEVICE_ID_MAJOR        0x07000000
 #define CFG_DEVICE_ID_RESERVED     0x78000000
diff --git a/drivers/staging/wfx/key.c b/drivers/staging/wfx/key.c
index 2ab82bed4c1b..51a528102016 100644
--- a/drivers/staging/wfx/key.c
+++ b/drivers/staging/wfx/key.c
@@ -84,10 +84,10 @@ static u8 fill_tkip_group(struct hif_tkip_group_key *msg,
 	memcpy(msg->tkip_key_data, keybuf, sizeof(msg->tkip_key_data));
 	keybuf += sizeof(msg->tkip_key_data);
 	if (iftype == NL80211_IFTYPE_AP)
-		// Use Tx MIC Key
+		/* Use Tx MIC Key */
 		memcpy(msg->rx_mic_key, keybuf + 0, sizeof(msg->rx_mic_key));
 	else
-		// Use Rx MIC Key
+		/* Use Rx MIC Key */
 		memcpy(msg->rx_mic_key, keybuf + 8, sizeof(msg->rx_mic_key));
 	return HIF_KEY_TYPE_TKIP_GROUP;
 }
diff --git a/drivers/staging/wfx/main.c b/drivers/staging/wfx/main.c
index 02b2e1c4ee12..e5e852ddf9c3 100644
--- a/drivers/staging/wfx/main.c
+++ b/drivers/staging/wfx/main.c
@@ -92,7 +92,7 @@ static const struct ieee80211_supported_band wfx_band_2ghz = {
 	.bitrates = wfx_rates,
 	.n_bitrates = ARRAY_SIZE(wfx_rates),
 	.ht_cap = {
-		// Receive caps
+		/* Receive caps */
 		.cap = IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 |
 		       IEEE80211_HT_CAP_MAX_AMSDU |
 		       (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT),
@@ -100,7 +100,7 @@ static const struct ieee80211_supported_band wfx_band_2ghz = {
 		.ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K,
 		.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE,
 		.mcs = {
-			.rx_mask = { 0xFF }, // MCS0 to MCS7
+			.rx_mask = { 0xFF }, /* MCS0 to MCS7 */
 			.rx_highest = cpu_to_le16(72),
 			.tx_params = IEEE80211_HT_MCS_TX_DEFINED,
 		},
@@ -294,7 +294,7 @@ struct wfx_dev *wfx_init_common(struct device *dev,
 	hw->wiphy->n_iface_combinations = ARRAY_SIZE(wfx_iface_combinations);
 	hw->wiphy->iface_combinations = wfx_iface_combinations;
 	hw->wiphy->bands[NL80211_BAND_2GHZ] = devm_kmalloc(dev, sizeof(wfx_band_2ghz), GFP_KERNEL);
-	// FIXME: also copy wfx_rates and wfx_2ghz_chantable
+	/* FIXME: also copy wfx_rates and wfx_2ghz_chantable */
 	memcpy(hw->wiphy->bands[NL80211_BAND_2GHZ], &wfx_band_2ghz,
 	       sizeof(wfx_band_2ghz));
 
@@ -336,8 +336,9 @@ int wfx_probe(struct wfx_dev *wdev)
 	int err;
 	struct gpio_desc *gpio_saved;
 
-	// During first part of boot, gpio_wakeup cannot yet been used. So
-	// prevent bh() to touch it.
+	/* During first part of boot, gpio_wakeup cannot yet been used. So
+	 * prevent bh() to touch it.
+	 */
 	gpio_saved = wdev->pdata.gpio_wakeup;
 	wdev->pdata.gpio_wakeup = NULL;
 	wdev->poll_irq = true;
@@ -360,7 +361,7 @@ int wfx_probe(struct wfx_dev *wdev)
 		goto err0;
 	}
 
-	// FIXME: fill wiphy::hw_version
+	/* FIXME: fill wiphy::hw_version */
 	dev_info(wdev->dev, "started firmware %d.%d.%d \"%s\" (API: %d.%d, keyset: %02X, caps: 0x%.8X)\n",
 		 wdev->hw_caps.firmware_major, wdev->hw_caps.firmware_minor,
 		 wdev->hw_caps.firmware_build, wdev->hw_caps.firmware_label,
diff --git a/drivers/staging/wfx/queue.c b/drivers/staging/wfx/queue.c
index e5e7595565ee..7a3ba3c38925 100644
--- a/drivers/staging/wfx/queue.c
+++ b/drivers/staging/wfx/queue.c
@@ -32,7 +32,7 @@ void wfx_tx_flush(struct wfx_dev *wdev)
 {
 	int ret;
 
-	// Do not wait for any reply if chip is frozen
+	/* Do not wait for any reply if chip is frozen */
 	if (wdev->chip_frozen)
 		return;
 
@@ -45,7 +45,7 @@ void wfx_tx_flush(struct wfx_dev *wdev)
 		dev_warn(wdev->dev, "cannot flush tx buffers (%d still busy)\n",
 			 wdev->hif.tx_buffers_used);
 		wfx_pending_dump_old_frames(wdev, 3000);
-		// FIXME: drop pending frames here
+		/* FIXME: drop pending frames here */
 		wdev->chip_frozen = true;
 	}
 	mutex_unlock(&wdev->hif_cmd.lock);
@@ -60,9 +60,10 @@ void wfx_tx_lock_flush(struct wfx_dev *wdev)
 
 void wfx_tx_queues_init(struct wfx_vif *wvif)
 {
-	// The device is in charge to respect the details of the QoS parameters.
-	// The driver just ensure that it roughtly respect the priorities to
-	// avoid any shortage.
+	/* The device is in charge to respect the details of the QoS parameters.
+	 * The driver just ensure that it roughtly respect the priorities to
+	 * avoid any shortage.
+	 */
 	const int priorities[IEEE80211_NUM_ACS] = { 1, 2, 64, 128 };
 	int i;
 
@@ -217,8 +218,9 @@ bool wfx_tx_queues_has_cab(struct wfx_vif *wvif)
 	if (wvif->vif->type != NL80211_IFTYPE_AP)
 		return false;
 	for (i = 0; i < IEEE80211_NUM_ACS; ++i)
-		// Note: since only AP can have mcast frames in queue and only
-		// one vif can be AP, all queued frames has same interface id
+		/* Note: since only AP can have mcast frames in queue and only
+		 * one vif can be AP, all queued frames has same interface id
+		 */
 		if (!skb_queue_empty_lockless(&wvif->tx_queue[i].cab))
 			return true;
 	return false;
@@ -237,7 +239,7 @@ static struct sk_buff *wfx_tx_queues_get_skb(struct wfx_dev *wdev)
 	struct hif_msg *hif;
 	struct sk_buff *skb;
 
-	// sort the queues
+	/* sort the queues */
 	wvif = NULL;
 	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
 		for (i = 0; i < IEEE80211_NUM_ACS; i++) {
@@ -259,9 +261,10 @@ static struct sk_buff *wfx_tx_queues_get_skb(struct wfx_dev *wdev)
 			skb = skb_dequeue(&queues[i]->cab);
 			if (!skb)
 				continue;
-			// Note: since only AP can have mcast frames in queue
-			// and only one vif can be AP, all queued frames has
-			// same interface id
+			/* Note: since only AP can have mcast frames in queue
+			 * and only one vif can be AP, all queued frames has
+			 * same interface id
+			 */
 			hif = (struct hif_msg *)skb->data;
 			WARN_ON(hif->interface != wvif->id);
 			WARN_ON(queues[i] !=
@@ -270,7 +273,7 @@ static struct sk_buff *wfx_tx_queues_get_skb(struct wfx_dev *wdev)
 			trace_queues_stats(wdev, queues[i]);
 			return skb;
 		}
-		// No more multicast to sent
+		/* No more multicast to sent */
 		wvif->after_dtim_tx_allowed = false;
 		schedule_work(&wvif->update_tim_work);
 	}
diff --git a/drivers/staging/wfx/queue.h b/drivers/staging/wfx/queue.h
index 24b60833864b..54b5def2e24c 100644
--- a/drivers/staging/wfx/queue.h
+++ b/drivers/staging/wfx/queue.h
@@ -16,7 +16,7 @@ struct wfx_vif;
 
 struct wfx_queue {
 	struct sk_buff_head	normal;
-	struct sk_buff_head	cab; // Content After (DTIM) Beacon
+	struct sk_buff_head	cab; /* Content After (DTIM) Beacon */
 	atomic_t		pending_frames;
 	int			priority;
 };
diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c
index 70e1c4d8ae2e..aceb18a1f54b 100644
--- a/drivers/staging/wfx/sta.c
+++ b/drivers/staging/wfx/sta.c
@@ -24,7 +24,7 @@ u32 wfx_rate_mask_to_hw(struct wfx_dev *wdev, u32 rates)
 {
 	int i;
 	u32 ret = 0;
-	// The device only supports 2GHz
+	/* The device only supports 2GHz */
 	struct ieee80211_supported_band *sband = wdev->hw->wiphy->bands[NL80211_BAND_2GHZ];
 
 	for (i = 0; i < sband->n_bitrates; i++) {
@@ -51,11 +51,11 @@ void wfx_cooling_timeout_work(struct work_struct *work)
 void wfx_suspend_hot_dev(struct wfx_dev *wdev, enum sta_notify_cmd cmd)
 {
 	if (cmd == STA_NOTIFY_AWAKE) {
-		// Device recover normal temperature
+		/* Device recover normal temperature */
 		if (cancel_delayed_work(&wdev->cooling_timeout_work))
 			wfx_tx_unlock(wdev);
 	} else {
-		// Device is too hot
+		/* Device is too hot */
 		schedule_delayed_work(&wdev->cooling_timeout_work, 10 * HZ);
 		wfx_tx_lock(wdev);
 	}
@@ -103,13 +103,14 @@ void wfx_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
 	struct wfx_dev *wdev = hw->priv;
 	bool filter_bssid, filter_prbreq, filter_beacon;
 
-	// Notes:
-	//   - Probe responses (FIF_BCN_PRBRESP_PROMISC) are never filtered
-	//   - PS-Poll (FIF_PSPOLL) are never filtered
-	//   - RTS, CTS and Ack (FIF_CONTROL) are always filtered
-	//   - Broken frames (FIF_FCSFAIL and FIF_PLCPFAIL) are always filtered
-	//   - Firmware does (yet) allow to forward unicast traffic sent to
-	//     other stations (aka. promiscuous mode)
+	/* Notes:
+	 *   - Probe responses (FIF_BCN_PRBRESP_PROMISC) are never filtered
+	 *   - PS-Poll (FIF_PSPOLL) are never filtered
+	 *   - RTS, CTS and Ack (FIF_CONTROL) are always filtered
+	 *   - Broken frames (FIF_FCSFAIL and FIF_PLCPFAIL) are always filtered
+	 *   - Firmware does (yet) allow to forward unicast traffic sent to
+	 *     other stations (aka. promiscuous mode)
+	 */
 	*total_flags &= FIF_BCN_PRBRESP_PROMISC | FIF_ALLMULTI | FIF_OTHER_BSS |
 			FIF_PROBE_REQ | FIF_PSPOLL;
 
@@ -117,8 +118,9 @@ void wfx_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
 	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
 		mutex_lock(&wvif->scan_lock);
 
-		// Note: FIF_BCN_PRBRESP_PROMISC covers probe response and
-		// beacons from other BSS
+		/* Note: FIF_BCN_PRBRESP_PROMISC covers probe response and
+		 * beacons from other BSS
+		 */
 		if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
 			filter_beacon = false;
 		else
@@ -130,7 +132,7 @@ void wfx_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
 		else
 			filter_bssid = true;
 
-		// In AP mode, chip can reply to probe request itself
+		/* In AP mode, chip can reply to probe request itself */
 		if (*total_flags & FIF_PROBE_REQ &&
 		    wvif->vif->type == NL80211_IFTYPE_AP) {
 			dev_dbg(wdev->dev, "do not forward probe request in AP mode\n");
@@ -161,15 +163,16 @@ static int wfx_get_ps_timeout(struct wfx_vif *wvif, bool *enable_ps)
 		chan1 = wdev_to_wvif(wvif->wdev, 1)->vif->bss_conf.chandef.chan;
 	if (chan0 && chan1 && wvif->vif->type != NL80211_IFTYPE_AP) {
 		if (chan0->hw_value == chan1->hw_value) {
-			// It is useless to enable PS if channels are the same.
+			/* It is useless to enable PS if channels are the same. */
 			if (enable_ps)
 				*enable_ps = false;
 			if (wvif->vif->bss_conf.assoc && wvif->vif->bss_conf.ps)
 				dev_info(wvif->wdev->dev, "ignoring requested PS mode");
 			return -1;
 		} else {
-			// It is necessary to enable PS if channels
-			// are different.
+			/* It is necessary to enable PS if channels
+			 * are different.
+			 */
 			if (enable_ps)
 				*enable_ps = true;
 			if (wvif->wdev->force_ps_timeout > -1)
@@ -305,7 +308,7 @@ int wfx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	if (vif->type == NL80211_IFTYPE_STATION)
 		hif_set_mfp(wvif, sta->mfp, sta->mfp);
 
-	// In station mode, the firmware interprets new link-id as a TDLS peer.
+	/* In station mode, the firmware interprets new link-id as a TDLS peer */
 	if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls)
 		return 0;
 	sta_priv->link_id = ffz(wvif->link_id_map);
@@ -323,10 +326,10 @@ int wfx_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
 	struct wfx_sta_priv *sta_priv = (struct wfx_sta_priv *)&sta->drv_priv;
 
-	// See note in wfx_sta_add()
+	/* See note in wfx_sta_add() */
 	if (!sta_priv->link_id)
 		return 0;
-	// FIXME add a mutex?
+	/* FIXME add a mutex? */
 	hif_map_link(wvif, true, sta->addr, sta_priv->link_id, false);
 	wvif->link_id_map &= ~BIT(sta_priv->link_id);
 	return 0;
@@ -421,7 +424,7 @@ static void wfx_join(struct wfx_vif *wvif)
 		return;
 	}
 
-	rcu_read_lock(); // protect ssidie
+	rcu_read_lock(); /* protect ssidie */
 	if (bss)
 		ssidie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
 	if (ssidie) {
@@ -457,7 +460,7 @@ static void wfx_join_finalize(struct wfx_vif *wvif,
 	int ampdu_density = 0;
 	bool greenfield = false;
 
-	rcu_read_lock(); // protect sta
+	rcu_read_lock(); /* protect sta */
 	if (info->bssid && !info->ibss_joined)
 		sta = ieee80211_find_sta(wvif->vif, info->bssid);
 	if (sta && sta->ht_cap.ht_supported)
@@ -471,8 +474,9 @@ static void wfx_join_finalize(struct wfx_vif *wvif,
 	hif_set_association_mode(wvif, ampdu_density, greenfield,
 				 info->use_short_preamble);
 	hif_keep_alive_period(wvif, 0);
-	// beacon_loss_count is defined to 7 in net/mac80211/mlme.c. Let's use
-	// the same value.
+	/* beacon_loss_count is defined to 7 in net/mac80211/mlme.c. Let's use
+	 * the same value.
+	 */
 	hif_set_bss_params(wvif, info->aid, 7);
 	hif_set_beacon_wakeup_period(wvif, 1, 1);
 	wfx_update_pm(wvif);
@@ -496,10 +500,11 @@ void wfx_leave_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 
 static void wfx_enable_beacon(struct wfx_vif *wvif, bool enable)
 {
-	// Driver has Content After DTIM Beacon in queue. Driver is waiting for
-	// a signal from the firmware. Since we are going to stop to send
-	// beacons, this signal will never happens. See also
-	// wfx_suspend_resume_mc()
+	/* Driver has Content After DTIM Beacon in queue. Driver is waiting for
+	 * a signal from the firmware. Since we are going to stop to send
+	 * beacons, this signal will never happens. See also
+	 * wfx_suspend_resume_mc()
+	 */
 	if (!enable && wfx_tx_queues_has_cab(wvif)) {
 		wvif->after_dtim_tx_allowed = true;
 		wfx_bh_request_tx(wvif->wdev);
@@ -539,8 +544,9 @@ void wfx_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 				 __func__);
 		hif_set_beacon_wakeup_period(wvif, info->dtim_period,
 					     info->dtim_period);
-		// We temporary forwarded beacon for join process. It is now no
-		// more necessary.
+		/* We temporary forwarded beacon for join process. It is now no
+		 * more necessary.
+		 */
 		wfx_filter_beacon(wvif, true);
 	}
 
@@ -662,14 +668,14 @@ int wfx_ampdu_action(struct ieee80211_hw *hw,
 		     struct ieee80211_vif *vif,
 		     struct ieee80211_ampdu_params *params)
 {
-	// Aggregation is implemented fully in firmware
+	/* Aggregation is implemented fully in firmware */
 	switch (params->action) {
 	case IEEE80211_AMPDU_RX_START:
 	case IEEE80211_AMPDU_RX_STOP:
-		// Just acknowledge it to enable frame re-ordering
+		/* Just acknowledge it to enable frame re-ordering */
 		return 0;
 	default:
-		// Leave the firmware doing its business for tx aggregation
+		/* Leave the firmware doing its business for tx aggregation */
 		return -EOPNOTSUPP;
 	}
 }
@@ -741,11 +747,11 @@ int wfx_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 		return -EOPNOTSUPP;
 	}
 
-	// FIXME: prefer use of container_of() to get vif
+	/* FIXME: prefer use of container_of() to get vif */
 	wvif->vif = vif;
 	wvif->wdev = wdev;
 
-	wvif->link_id_map = 1; // link-id 0 is reserved for multicast
+	wvif->link_id_map = 1; /* link-id 0 is reserved for multicast */
 	INIT_WORK(&wvif->update_tim_work, wfx_update_tim_work);
 	INIT_DELAYED_WORK(&wvif->beacon_loss_work, wfx_beacon_loss_work);
 
@@ -775,7 +781,7 @@ int wfx_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 
 	wvif = NULL;
 	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
-		// Combo mode does not support Block Acks. We can re-enable them
+		/* Combo mode does not support Block Acks. We can re-enable them */
 		if (wvif_count(wdev) == 1)
 			hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
 		else
@@ -807,7 +813,7 @@ void wfx_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 
 	wvif = NULL;
 	while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
-		// Combo mode does not support Block Acks. We can re-enable them
+		/* Combo mode does not support Block Acks. We can re-enable them */
 		if (wvif_count(wdev) == 1)
 			hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
 		else
diff --git a/drivers/staging/wfx/sta.h b/drivers/staging/wfx/sta.h
index 056ed5267aba..f359f375cc56 100644
--- a/drivers/staging/wfx/sta.h
+++ b/drivers/staging/wfx/sta.h
@@ -18,7 +18,7 @@ struct wfx_sta_priv {
 	int vif_id;
 };
 
-// mac80211 interface
+/* mac80211 interface */
 int wfx_start(struct ieee80211_hw *hw);
 void wfx_stop(struct ieee80211_hw *hw);
 int wfx_config(struct ieee80211_hw *hw, u32 changed);
@@ -59,14 +59,14 @@ void wfx_unassign_vif_chanctx(struct ieee80211_hw *hw,
 			      struct ieee80211_vif *vif,
 			      struct ieee80211_chanctx_conf *conf);
 
-// Hardware API Callbacks
+/* Hardware API Callbacks */
 void wfx_cooling_timeout_work(struct work_struct *work);
 void wfx_suspend_hot_dev(struct wfx_dev *wdev, enum sta_notify_cmd cmd);
 void wfx_suspend_resume_mc(struct wfx_vif *wvif, enum sta_notify_cmd cmd);
 void wfx_event_report_rssi(struct wfx_vif *wvif, u8 raw_rcpi_rssi);
 int wfx_update_pm(struct wfx_vif *wvif);
 
-// Other Helpers
+/* Other Helpers */
 void wfx_reset(struct wfx_vif *wvif);
 u32 wfx_rate_mask_to_hw(struct wfx_dev *wdev, u32 rates);
 
diff --git a/drivers/staging/wfx/traces.h b/drivers/staging/wfx/traces.h
index e34c7a538c65..e90dc73c4b01 100644
--- a/drivers/staging/wfx/traces.h
+++ b/drivers/staging/wfx/traces.h
@@ -378,7 +378,7 @@ TRACE_EVENT(tx_stats,
 		__array(int, tx_count, 4)
 	),
 	TP_fast_assign(
-		// Keep sync with wfx_rates definition in main.c
+		/* Keep sync with wfx_rates definition in main.c */
 		static const int hw_rate[] = { 0, 1, 2, 3, 6, 7, 8, 9,
 					       10, 11, 12, 13 };
 		const struct ieee80211_tx_info *tx_info =
diff --git a/drivers/staging/wfx/wfx.h b/drivers/staging/wfx/wfx.h
index 5637f9af79c0..a4770f59f7d2 100644
--- a/drivers/staging/wfx/wfx.h
+++ b/drivers/staging/wfx/wfx.h
@@ -22,7 +22,7 @@
 #include "queue.h"
 #include "hif_tx.h"
 
-#define USEC_PER_TXOP 32 // see struct ieee80211_tx_queue_params
+#define USEC_PER_TXOP 32 /* see struct ieee80211_tx_queue_params */
 #define USEC_PER_TU 1024
 
 struct hwbus_ops;
