[PATCH v2] rtlwifi: rtl8192de: Style clean-ups

[PATCH v2] rtlwifi: rtl8192de: Style clean-ups

[Kees Cook]

Clean up some style issues:
- Use ARRAY_SIZE() for arrays (even when u8 sized)
- Remove redundant CHANNEL_MAX_NUMBER_2G define.
Additionally fix some dead code WARNs.

Cc: Ping-Ke Shih <pkshih@realtek.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
---
 .../wireless/realtek/rtlwifi/rtl8192de/phy.c    | 17 +++++++----------
 drivers/net/wireless/realtek/rtlwifi/wifi.h     |  1 -
 2 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c
index b32fa7a75f17..d73148805b9c 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c
@@ -899,7 +899,7 @@ static u8 _rtl92c_phy_get_rightchnlplace(u8 chnl)
 	u8 place = chnl;
 
 	if (chnl > 14) {
-		for (place = 14; place < sizeof(channel5g); place++) {
+		for (place = 14; place < ARRAY_SIZE(channel5g); place++) {
 			if (channel5g[place] == chnl) {
 				place++;
 				break;
@@ -1366,7 +1366,7 @@ u8 rtl92d_get_rightchnlplace_for_iqk(u8 chnl)
 	u8 place = chnl;
 
 	if (chnl > 14) {
-		for (place = 14; place < sizeof(channel_all); place++) {
+		for (place = 14; place < ARRAY_SIZE(channel_all); place++) {
 			if (channel_all[place] == chnl)
 				return place - 13;
 		}
@@ -2428,7 +2428,7 @@ static bool _rtl92d_is_legal_5g_channel(struct ieee80211_hw *hw, u8 channel)
 
 	int i;
 
-	for (i = 0; i < sizeof(channel5g); i++)
+	for (i = 0; i < ARRAY_SIZE(channel5g); i++)
 		if (channel == channel5g[i])
 			return true;
 	return false;
@@ -2692,9 +2692,8 @@ void rtl92d_phy_reset_iqk_result(struct ieee80211_hw *hw)
 	u8 i;
 
 	rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
-		"settings regs %d default regs %d\n",
-		(int)(sizeof(rtlphy->iqk_matrix) /
-		      sizeof(struct iqk_matrix_regs)),
+		"settings regs %zu default regs %d\n",
+		ARRAY_SIZE(rtlphy->iqk_matrix),
 		IQK_MATRIX_REG_NUM);
 	/* 0xe94, 0xe9c, 0xea4, 0xeac, 0xeb4, 0xebc, 0xec4, 0xecc */
 	for (i = 0; i < IQK_MATRIX_SETTINGS_NUM; i++) {
@@ -2861,16 +2860,14 @@ u8 rtl92d_phy_sw_chnl(struct ieee80211_hw *hw)
 	case BAND_ON_5G:
 		/* Get first channel error when change between
 		 * 5G and 2.4G band. */
-		if (channel <= 14)
+		if (WARN_ONCE(channel <= 14, "rtl8192de: 5G but channel<=14\n"))
 			return 0;
-		WARN_ONCE((channel <= 14), "rtl8192de: 5G but channel<=14\n");
 		break;
 	case BAND_ON_2_4G:
 		/* Get first channel error when change between
 		 * 5G and 2.4G band. */
-		if (channel > 14)
+		if (WARN_ONCE(channel > 14, "rtl8192de: 2G but channel>14\n"))
 			return 0;
-		WARN_ONCE((channel > 14), "rtl8192de: 2G but channel>14\n");
 		break;
 	default:
 		WARN_ONCE(true, "rtl8192de: Invalid WirelessMode(%#x)!!\n",
diff --git a/drivers/net/wireless/realtek/rtlwifi/wifi.h b/drivers/net/wireless/realtek/rtlwifi/wifi.h
index aa07856411b1..31f9e9e5c680 100644
--- a/drivers/net/wireless/realtek/rtlwifi/wifi.h
+++ b/drivers/net/wireless/realtek/rtlwifi/wifi.h
@@ -108,7 +108,6 @@
 #define	CHANNEL_GROUP_IDX_5GM		6
 #define	CHANNEL_GROUP_IDX_5GH		9
 #define	CHANNEL_GROUP_MAX_5G		9
-#define CHANNEL_MAX_NUMBER_2G		14
 #define AVG_THERMAL_NUM			8
 #define AVG_THERMAL_NUM_88E		4
 #define AVG_THERMAL_NUM_8723BE		4
-- 
2.30.2

RE: [PATCH v2] rtlwifi: rtl8192de: Style clean-ups

[Pkshih]

> -----Original Message-----
> From: Kees Cook [mailto:keescook@chromium.org]
> Sent: Thursday, August 26, 2021 10:33 AM
> To: Pkshih
> Cc: Kees Cook; Kalle Valo; David S. Miller; Jakub Kicinski; Larry Finger; Colin Ian King;
> linux-wireless@vger.kernel.org; netdev@vger.kernel.org; Joe Perches; Kaixu Xia;
> linux-kernel@vger.kernel.org; linux-hardening@vger.kernel.org
> Subject: [PATCH v2] rtlwifi: rtl8192de: Style clean-ups
> 
> Clean up some style issues:
> - Use ARRAY_SIZE() for arrays (even when u8 sized)
> - Remove redundant CHANNEL_MAX_NUMBER_2G define.
> Additionally fix some dead code WARNs.
> 
> Cc: Ping-Ke Shih <pkshih@realtek.com>
> Cc: Kalle Valo <kvalo@codeaurora.org>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Jakub Kicinski <kuba@kernel.org>
> Cc: Larry Finger <Larry.Finger@lwfinger.net>
> Cc: Colin Ian King <colin.king@canonical.com>
> Cc: linux-wireless@vger.kernel.org
> Cc: netdev@vger.kernel.org
> Signed-off-by: Kees Cook <keescook@chromium.org>

Acked-by: Ping-Ke Shih <pkshih@realtek.com>

[...]

Re: [PATCH v2] rtlwifi: rtl8192de: Style clean-ups

[Kalle Valo]

Kees Cook <keescook@chromium.org> wrote:

> Clean up some style issues:
> - Use ARRAY_SIZE() for arrays (even when u8 sized)
> - Remove redundant CHANNEL_MAX_NUMBER_2G define.
> Additionally fix some dead code WARNs.
> 
> Cc: Ping-Ke Shih <pkshih@realtek.com>
> Cc: Kalle Valo <kvalo@codeaurora.org>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Jakub Kicinski <kuba@kernel.org>
> Cc: Larry Finger <Larry.Finger@lwfinger.net>
> Cc: Colin Ian King <colin.king@canonical.com>
> Cc: linux-wireless@vger.kernel.org
> Cc: netdev@vger.kernel.org
> Signed-off-by: Kees Cook <keescook@chromium.org>
> Acked-by: Ping-Ke Shih <pkshih@realtek.com>

Failed to apply, please rebase over wireless-drivers-next.

error: sha1 information is lacking or useless (drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c).
error: could not build fake ancestor
hint: Use 'git am --show-current-patch' to see the failed patch
Applying: rtlwifi: rtl8192de: Style clean-ups
Patch failed at 0001 rtlwifi: rtl8192de: Style clean-ups

Patch set to Changes Requested.

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20210826023230.1148924-1-keescook@chromium.org/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches