diff mbox series

wifi: rtlwifi: cleanup few rtlxxxx_set_hw_reg() routines

Message ID 20230925090452.25633-1-dmantipov@yandex.ru
State New
Headers show
Series wifi: rtlwifi: cleanup few rtlxxxx_set_hw_reg() routines | expand

Commit Message

Dmitry Antipov Sept. 25, 2023, 9:04 a.m. UTC 
Since 'u8' comparison against zero is always false, drop the
corresponding branches of AMPDU_MIN_SPACE adjustment within
'rtlxxxx_set_hw_reg()' for rtl8188ee, rtl8192ce, rtl8192de,
rtl8723ae, rtl8723be, and rtl8821ae. Compile tested only.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
---
 drivers/net/wireless/realtek/rtlwifi/rtl8188ee/hw.c | 5 -----
 drivers/net/wireless/realtek/rtlwifi/rtl8192ce/hw.c | 5 -----
 drivers/net/wireless/realtek/rtlwifi/rtl8192de/hw.c | 4 ----
 drivers/net/wireless/realtek/rtlwifi/rtl8723ae/hw.c | 5 -----
 drivers/net/wireless/realtek/rtlwifi/rtl8723be/hw.c | 6 ------
 drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c | 5 -----
 6 files changed, 30 deletions(-)

Comments

Ping-Ke Shih Sept. 26, 2023, 1:14 a.m. UTC | #1 
> -----Original Message-----
> From: Dmitry Antipov <dmantipov@yandex.ru>
> Sent: Monday, September 25, 2023 5:05 PM
> To: Ping-Ke Shih <pkshih@realtek.com>
> Cc: Kalle Valo <kvalo@kernel.org>; linux-wireless@vger.kernel.org; lvc-project@linuxtesting.org; Dmitry
> Antipov <dmantipov@yandex.ru>
> Subject: [PATCH] wifi: rtlwifi: cleanup few rtlxxxx_set_hw_reg() routines
> 
> Since 'u8' comparison against zero is always false, drop the
> corresponding branches of AMPDU_MIN_SPACE adjustment within
> 'rtlxxxx_set_hw_reg()' for rtl8188ee, rtl8192ce, rtl8192de,
> rtl8723ae, rtl8723be, and rtl8821ae. Compile tested only.
> 
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
> 
> Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>

Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Kalle Valo Sept. 28, 2023, 4:25 p.m. UTC | #2 
Dmitry Antipov <dmantipov@yandex.ru> wrote:

> Since 'u8' comparison against zero is always false, drop the
> corresponding branches of AMPDU_MIN_SPACE adjustment within
> 'rtlxxxx_set_hw_reg()' for rtl8188ee, rtl8192ce, rtl8192de,
> rtl8723ae, rtl8723be, and rtl8821ae. Compile tested only.
> 
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
> 
> Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
> Acked-by: Ping-Ke Shih <pkshih@realtek.com>

Patch applied to wireless-next.git, thanks.

6016f0cb02f4 wifi: rtlwifi: cleanup few rtlxxxx_set_hw_reg() routines
diff mbox series

Patch

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/hw.c b/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/hw.c
index 58b1a46066b5..27f6c35ba0f9 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/hw.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/hw.c
@@ -433,14 +433,9 @@  void rtl88ee_set_hw_reg(struct ieee80211_hw *hw, u8 variable, u8 *val)
 		break;
 	case HW_VAR_AMPDU_MIN_SPACE:{
 		u8 min_spacing_to_set;
-		u8 sec_min_space;
 
 		min_spacing_to_set = *val;
 		if (min_spacing_to_set <= 7) {
-			sec_min_space = 0;
-
-			if (min_spacing_to_set < sec_min_space)
-				min_spacing_to_set = sec_min_space;
 
 			mac->min_space_cfg = ((mac->min_space_cfg &
 					       0xf8) |
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192ce/hw.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192ce/hw.c
index 049c4fe9eeed..0bc915723b93 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192ce/hw.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192ce/hw.c
@@ -208,14 +208,9 @@  void rtl92ce_set_hw_reg(struct ieee80211_hw *hw, u8 variable, u8 *val)
 		}
 	case HW_VAR_AMPDU_MIN_SPACE:{
 			u8 min_spacing_to_set;
-			u8 sec_min_space;
 
 			min_spacing_to_set = *val;
 			if (min_spacing_to_set <= 7) {
-				sec_min_space = 0;
-
-				if (min_spacing_to_set < sec_min_space)
-					min_spacing_to_set = sec_min_space;
 
 				mac->min_space_cfg = ((mac->min_space_cfg &
 						       0xf8) |
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192de/hw.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192de/hw.c
index 31a18bbface9..743ac6871bf4 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192de/hw.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192de/hw.c
@@ -225,13 +225,9 @@  void rtl92de_set_hw_reg(struct ieee80211_hw *hw, u8 variable, u8 *val)
 	}
 	case HW_VAR_AMPDU_MIN_SPACE: {
 		u8 min_spacing_to_set;
-		u8 sec_min_space;
 
 		min_spacing_to_set = *val;
 		if (min_spacing_to_set <= 7) {
-			sec_min_space = 0;
-			if (min_spacing_to_set < sec_min_space)
-				min_spacing_to_set = sec_min_space;
 			mac->min_space_cfg = ((mac->min_space_cfg & 0xf8) |
 					      min_spacing_to_set);
 			*val = min_spacing_to_set;
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/hw.c b/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/hw.c
index d26d4c4314a3..6991713a66d0 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/hw.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/hw.c
@@ -212,14 +212,9 @@  void rtl8723e_set_hw_reg(struct ieee80211_hw *hw, u8 variable, u8 *val)
 		}
 	case HW_VAR_AMPDU_MIN_SPACE:{
 			u8 min_spacing_to_set;
-			u8 sec_min_space;
 
 			min_spacing_to_set = *((u8 *)val);
 			if (min_spacing_to_set <= 7) {
-				sec_min_space = 0;
-
-				if (min_spacing_to_set < sec_min_space)
-					min_spacing_to_set = sec_min_space;
 
 				mac->min_space_cfg = ((mac->min_space_cfg &
 						       0xf8) |
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8723be/hw.c b/drivers/net/wireless/realtek/rtlwifi/rtl8723be/hw.c
index 15575644551f..0e77de1baaf8 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8723be/hw.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8723be/hw.c
@@ -468,15 +468,9 @@  void rtl8723be_set_hw_reg(struct ieee80211_hw *hw, u8 variable, u8 *val)
 		break;
 	case HW_VAR_AMPDU_MIN_SPACE:{
 		u8 min_spacing_to_set;
-		u8 sec_min_space;
 
 		min_spacing_to_set = *((u8 *)val);
 		if (min_spacing_to_set <= 7) {
-			sec_min_space = 0;
-
-			if (min_spacing_to_set < sec_min_space)
-				min_spacing_to_set = sec_min_space;
-
 			mac->min_space_cfg = ((mac->min_space_cfg & 0xf8) |
 					      min_spacing_to_set);
 
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c
index 3f8f6da33b12..1633328bc3d1 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c
@@ -546,14 +546,9 @@  void rtl8821ae_set_hw_reg(struct ieee80211_hw *hw, u8 variable, u8 *val)
 		break;
 	case HW_VAR_AMPDU_MIN_SPACE:{
 		u8 min_spacing_to_set;
-		u8 sec_min_space;
 
 		min_spacing_to_set = *((u8 *)val);
 		if (min_spacing_to_set <= 7) {
-			sec_min_space = 0;
-
-			if (min_spacing_to_set < sec_min_space)
-				min_spacing_to_set = sec_min_space;
 
 			mac->min_space_cfg = ((mac->min_space_cfg &
 					       0xf8) |