[3/3] usb: cdns3: gadget: fix some endian issues

Message ID 20200603065356.14124-4-peter.chen@nxp.com
State New
Headers show
Series
  • [1/3] usb: cdns3: ep0: fix some endian issues
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Commit Message

Peter Chen June 3, 2020, 6:53 a.m.
It is found by sparse.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
---
 drivers/usb/cdns3/gadget.c | 80 +++++++++++++++++++-------------------
 1 file changed, 40 insertions(+), 40 deletions(-)

Patch

diff --git a/drivers/usb/cdns3/gadget.c b/drivers/usb/cdns3/gadget.c
index 2cee12195978..eac01b1a4958 100644
--- a/drivers/usb/cdns3/gadget.c
+++ b/drivers/usb/cdns3/gadget.c
@@ -82,7 +82,7 @@  static int cdns3_ep_run_stream_transfer(struct cdns3_endpoint *priv_ep,
  * @ptr: address of device controller register to be read and changed
  * @mask: bits requested to clar
  */
-void cdns3_clear_register_bit(void __iomem *ptr, u32 mask)
+static void cdns3_clear_register_bit(void __iomem *ptr, u32 mask)
 {
 	mask = readl(ptr) & ~mask;
 	writel(mask, ptr);
@@ -137,7 +137,7 @@  struct usb_request *cdns3_next_request(struct list_head *list)
  *
  * Returns buffer or NULL if no buffers in list
  */
-struct cdns3_aligned_buf *cdns3_next_align_buf(struct list_head *list)
+static struct cdns3_aligned_buf *cdns3_next_align_buf(struct list_head *list)
 {
 	return list_first_entry_or_null(list, struct cdns3_aligned_buf, list);
 }
@@ -148,7 +148,7 @@  struct cdns3_aligned_buf *cdns3_next_align_buf(struct list_head *list)
  *
  * Returns request or NULL if no requests in list
  */
-struct cdns3_request *cdns3_next_priv_request(struct list_head *list)
+static struct cdns3_request *cdns3_next_priv_request(struct list_head *list)
 {
 	return list_first_entry_or_null(list, struct cdns3_request, list);
 }
@@ -190,7 +190,7 @@  dma_addr_t cdns3_trb_virt_to_dma(struct cdns3_endpoint *priv_ep,
 	return priv_ep->trb_pool_dma + offset;
 }
 
-int cdns3_ring_size(struct cdns3_endpoint *priv_ep)
+static int cdns3_ring_size(struct cdns3_endpoint *priv_ep)
 {
 	switch (priv_ep->type) {
 	case USB_ENDPOINT_XFER_ISOC:
@@ -260,8 +260,8 @@  int cdns3_allocate_trb_pool(struct cdns3_endpoint *priv_ep)
 		 */
 		link_trb->control = 0;
 	} else {
-		link_trb->buffer = TRB_BUFFER(priv_ep->trb_pool_dma);
-		link_trb->control = TRB_CYCLE | TRB_TYPE(TRB_LINK) | TRB_TOGGLE;
+		link_trb->buffer = cpu_to_le32(TRB_BUFFER(priv_ep->trb_pool_dma));
+		link_trb->control = cpu_to_le32(TRB_CYCLE | TRB_TYPE(TRB_LINK) | TRB_TOGGLE);
 	}
 	return 0;
 }
@@ -345,7 +345,7 @@  static void cdns3_ep_inc_deq(struct cdns3_endpoint *priv_ep)
 	cdns3_ep_inc_trb(&priv_ep->dequeue, &priv_ep->ccs, priv_ep->num_trbs);
 }
 
-void cdns3_move_deq_to_next_trb(struct cdns3_request *priv_req)
+static void cdns3_move_deq_to_next_trb(struct cdns3_request *priv_req)
 {
 	struct cdns3_endpoint *priv_ep = priv_req->priv_ep;
 	int current_trb = priv_req->start_trb;
@@ -511,7 +511,7 @@  static void cdns3_wa2_descmiss_copy_data(struct cdns3_endpoint *priv_ep,
 	}
 }
 
-struct usb_request *cdns3_wa2_gadget_giveback(struct cdns3_device *priv_dev,
+static struct usb_request *cdns3_wa2_gadget_giveback(struct cdns3_device *priv_dev,
 					      struct cdns3_endpoint *priv_ep,
 					      struct cdns3_request *priv_req)
 {
@@ -551,7 +551,7 @@  struct usb_request *cdns3_wa2_gadget_giveback(struct cdns3_device *priv_dev,
 	return &priv_req->request;
 }
 
-int cdns3_wa2_gadget_ep_queue(struct cdns3_device *priv_dev,
+static int cdns3_wa2_gadget_ep_queue(struct cdns3_device *priv_dev,
 			      struct cdns3_endpoint *priv_ep,
 			      struct cdns3_request *priv_req)
 {
@@ -836,7 +836,7 @@  void cdns3_gadget_giveback(struct cdns3_endpoint *priv_ep,
 		cdns3_gadget_ep_free_request(&priv_ep->endpoint, request);
 }
 
-void cdns3_wa1_restore_cycle_bit(struct cdns3_endpoint *priv_ep)
+static void cdns3_wa1_restore_cycle_bit(struct cdns3_endpoint *priv_ep)
 {
 	/* Work around for stale data address in TRB*/
 	if (priv_ep->wa1_set) {
@@ -846,10 +846,10 @@  void cdns3_wa1_restore_cycle_bit(struct cdns3_endpoint *priv_ep)
 		priv_ep->wa1_trb_index = 0xFFFF;
 		if (priv_ep->wa1_cycle_bit) {
 			priv_ep->wa1_trb->control =
-				priv_ep->wa1_trb->control | 0x1;
+				priv_ep->wa1_trb->control | cpu_to_le32(0x1);
 		} else {
 			priv_ep->wa1_trb->control =
-				priv_ep->wa1_trb->control & ~0x1;
+				priv_ep->wa1_trb->control & cpu_to_le32(~0x1);
 		}
 	}
 }
@@ -1007,17 +1007,16 @@  static int cdns3_ep_run_stream_transfer(struct cdns3_endpoint *priv_ep,
 		  TRB_STREAM_ID(priv_req->request.stream_id) | TRB_ISP;
 
 	if (!request->num_sgs) {
-		trb->buffer = TRB_BUFFER(trb_dma);
+		trb->buffer = cpu_to_le32(TRB_BUFFER(trb_dma));
 		length = request->length;
 	} else {
-		trb->buffer = TRB_BUFFER(request->sg[sg_idx].dma_address);
+		trb->buffer = cpu_to_le32(TRB_BUFFER(request->sg[sg_idx].dma_address));
 		length = request->sg[sg_idx].length;
 	}
 
 	tdl = DIV_ROUND_UP(length, priv_ep->endpoint.maxpacket);
 
-	trb->length = TRB_BURST_LEN(16 /*priv_ep->trb_burst_size*/) |
-				  TRB_LEN(length);
+	trb->length = cpu_to_le32(TRB_BURST_LEN(16) | TRB_LEN(length));
 
 	/*
 	 * For DEV_VER_V2 controller version we have enabled
@@ -1026,11 +1025,11 @@  static int cdns3_ep_run_stream_transfer(struct cdns3_endpoint *priv_ep,
 	 */
 	if (priv_dev->dev_ver >= DEV_VER_V2) {
 		if (priv_dev->gadget.speed == USB_SPEED_SUPER)
-			trb->length |= TRB_TDL_SS_SIZE(tdl);
+			trb->length |= cpu_to_le32(TRB_TDL_SS_SIZE(tdl));
 	}
 	priv_req->flags |= REQUEST_PENDING;
 
-	trb->control = control;
+	trb->control = cpu_to_le32(control);
 
 	trace_cdns3_prepare_trb(priv_ep, priv_req->trb);
 
@@ -1154,8 +1153,8 @@  static int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep,
 		    TRBS_PER_SEGMENT > 2)
 			ch_bit = TRB_CHAIN;
 
-		link_trb->control = ((priv_ep->pcs) ? TRB_CYCLE : 0) |
-				    TRB_TYPE(TRB_LINK) | TRB_TOGGLE | ch_bit;
+		link_trb->control = cpu_to_le32(((priv_ep->pcs) ? TRB_CYCLE : 0) |
+				    TRB_TYPE(TRB_LINK) | TRB_TOGGLE | ch_bit);
 	}
 
 	if (priv_dev->dev_ver <= DEV_VER_V2)
@@ -1170,8 +1169,8 @@  static int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep,
 
 		/* fill TRB */
 		control |= TRB_TYPE(TRB_NORMAL);
-		trb->buffer = TRB_BUFFER(request->num_sgs == 0
-				? trb_dma : request->sg[sg_iter].dma_address);
+		trb->buffer = cpu_to_le32(TRB_BUFFER(request->num_sgs == 0
+				? trb_dma : request->sg[sg_iter].dma_address));
 
 		if (likely(!request->num_sgs))
 			length = request->length;
@@ -1185,10 +1184,10 @@  static int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep,
 			total_tdl += DIV_ROUND_UP(length,
 					       priv_ep->endpoint.maxpacket);
 
-		trb->length = TRB_BURST_LEN(priv_ep->trb_burst_size) |
-					TRB_LEN(length);
+		trb->length = cpu_to_le32(TRB_BURST_LEN(priv_ep->trb_burst_size) |
+					TRB_LEN(length));
 		if (priv_dev->gadget.speed == USB_SPEED_SUPER)
-			trb->length |= TRB_TDL_SS_SIZE(td_size);
+			trb->length |= cpu_to_le32(TRB_TDL_SS_SIZE(td_size));
 		else
 			control |= TRB_TDL_HS_SIZE(td_size);
 
@@ -1210,9 +1209,9 @@  static int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep,
 		}
 
 		if (sg_iter)
-			trb->control = control;
+			trb->control = cpu_to_le32(control);
 		else
-			priv_req->trb->control = control;
+			priv_req->trb->control = cpu_to_le32(control);
 
 		control = 0;
 		++sg_iter;
@@ -1226,7 +1225,7 @@  static int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep,
 	priv_req->flags |= REQUEST_PENDING;
 
 	if (sg_iter == 1)
-		trb->control |= TRB_IOC | TRB_ISP;
+		trb->control |= cpu_to_le32(TRB_IOC | TRB_ISP);
 
 	if (priv_dev->dev_ver < DEV_VER_V2 &&
 	    (priv_ep->flags & EP_TDLCHK_EN)) {
@@ -1252,7 +1251,7 @@  static int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep,
 
 	/* give the TD to the consumer*/
 	if (togle_pcs)
-		trb->control =  trb->control ^ 1;
+		trb->control = trb->control ^ cpu_to_le32(1);
 
 	if (priv_dev->dev_ver <= DEV_VER_V2)
 		cdns3_wa1_tray_restore_cycle_bit(priv_dev, priv_ep);
@@ -1390,7 +1389,7 @@  static bool cdns3_request_handled(struct cdns3_endpoint *priv_ep,
 
 	trb = &priv_ep->trb_pool[priv_req->start_trb];
 
-	if ((trb->control  & TRB_CYCLE) != priv_ep->ccs)
+	if ((le32_to_cpu(trb->control) & TRB_CYCLE) != priv_ep->ccs)
 		goto finish;
 
 	if (doorbell == 1 && current_index == priv_ep->dequeue)
@@ -1439,7 +1438,7 @@  static void cdns3_transfer_completed(struct cdns3_device *priv_dev,
 		trb = priv_ep->trb_pool + priv_ep->dequeue;
 
 		/* Request was dequeued and TRB was changed to TRB_LINK. */
-		if (TRB_FIELD_TO_TYPE(trb->control) == TRB_LINK) {
+		if (TRB_FIELD_TO_TYPE(le32_to_cpu(trb->control)) == TRB_LINK) {
 			trace_cdns3_complete_trb(priv_ep, trb);
 			cdns3_move_deq_to_next_trb(priv_req);
 		}
@@ -1571,7 +1570,7 @@  static int cdns3_check_ep_interrupt_proceed(struct cdns3_endpoint *priv_ep)
 		 * that host ignore the ERDY packet and driver has to send it
 		 * again.
 		 */
-		if (tdl && (dbusy | !EP_STS_BUFFEMPTY(ep_sts_reg) |
+		if (tdl && (dbusy || !EP_STS_BUFFEMPTY(ep_sts_reg) ||
 		    EP_STS_HOSTPP(ep_sts_reg))) {
 			writel(EP_CMD_ERDY |
 			       EP_CMD_ERDY_SID(priv_ep->last_stream_id),
@@ -1908,7 +1907,7 @@  static int cdns3_ep_onchip_buffer_reserve(struct cdns3_device *priv_dev,
 	return 0;
 }
 
-void cdns3_stream_ep_reconfig(struct cdns3_device *priv_dev,
+static void cdns3_stream_ep_reconfig(struct cdns3_device *priv_dev,
 			      struct cdns3_endpoint *priv_ep)
 {
 	if (!priv_ep->use_streams || priv_dev->gadget.speed < USB_SPEED_SUPER)
@@ -1929,7 +1928,7 @@  void cdns3_stream_ep_reconfig(struct cdns3_device *priv_dev,
 			       EP_CFG_TDL_CHK | EP_CFG_SID_CHK);
 }
 
-void cdns3_configure_dmult(struct cdns3_device *priv_dev,
+static void cdns3_configure_dmult(struct cdns3_device *priv_dev,
 			   struct cdns3_endpoint *priv_ep)
 {
 	struct cdns3_usb_regs __iomem *regs = priv_dev->regs;
@@ -2553,10 +2552,10 @@  int cdns3_gadget_ep_dequeue(struct usb_ep *ep,
 
 	/* Update ring only if removed request is on pending_req_list list */
 	if (req_on_hw_ring && link_trb) {
-		link_trb->buffer = TRB_BUFFER(priv_ep->trb_pool_dma +
-			((priv_req->end_trb + 1) * TRB_SIZE));
-		link_trb->control = (link_trb->control & TRB_CYCLE) |
-				    TRB_TYPE(TRB_LINK) | TRB_CHAIN;
+		link_trb->buffer = cpu_to_le32(TRB_BUFFER(priv_ep->trb_pool_dma +
+			((priv_req->end_trb + 1) * TRB_SIZE)));
+		link_trb->control = cpu_to_le32((le32_to_cpu(link_trb->control) & TRB_CYCLE) |
+				    TRB_TYPE(TRB_LINK) | TRB_CHAIN);
 
 		if (priv_ep->wa1_trb == priv_req->trb)
 			cdns3_wa1_restore_cycle_bit(priv_ep);
@@ -2611,7 +2610,7 @@  int __cdns3_gadget_ep_clear_halt(struct cdns3_endpoint *priv_ep)
 		priv_req = to_cdns3_request(request);
 		trb = priv_req->trb;
 		if (trb)
-			trb->control = trb->control ^ TRB_CYCLE;
+			trb->control = trb->control ^ cpu_to_le32(TRB_CYCLE);
 	}
 
 	writel(EP_CMD_CSTALL | EP_CMD_EPRST, &priv_dev->regs->ep_cmd);
@@ -2626,7 +2625,8 @@  int __cdns3_gadget_ep_clear_halt(struct cdns3_endpoint *priv_ep)
 
 	if (request) {
 		if (trb)
-			trb->control = trb->control ^ TRB_CYCLE;
+			trb->control = trb->control ^ cpu_to_le32(TRB_CYCLE);
+
 		cdns3_rearm_transfer(priv_ep, 1);
 	}