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* [PATCH] rtlwifi: rtl8192de: Style clean-ups
@ 2021-08-25 18:33 Kees Cook
  2021-08-26  0:58 ` Pkshih
  0 siblings, 1 reply; 3+ messages in thread
From: Kees Cook @ 2021-08-25 18:33 UTC (permalink / raw)
  To: Ping-Ke Shih
  Cc: Kees Cook, Kalle Valo, David S. Miller, Jakub Kicinski,
	Larry Finger, Colin Ian King, linux-wireless, netdev,
	Joe Perches, Kaixu Xia, linux-kernel, linux-hardening

Clean up some style issues:
- Use ARRAY_SIZE() even though it's a u8 array.
- 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>
---
 drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c | 8 +++-----
 drivers/net/wireless/realtek/rtlwifi/wifi.h          | 1 -
 2 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c
index b32fa7a75f17..9807c9e91998 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;
@@ -2861,16 +2861,14 @@ 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


^ permalink raw reply	[flat|nested] 3+ messages in thread

* RE: [PATCH] rtlwifi: rtl8192de: Style clean-ups
  2021-08-25 18:33 [PATCH] rtlwifi: rtl8192de: Style clean-ups Kees Cook
@ 2021-08-26  0:58 ` Pkshih
  2021-08-26  2:32   ` Kees Cook
  0 siblings, 1 reply; 3+ messages in thread
From: Pkshih @ 2021-08-26  0:58 UTC (permalink / raw)
  To: Kees Cook
  Cc: Kalle Valo, David S. Miller, Jakub Kicinski, Larry Finger,
	Colin Ian King, linux-wireless, netdev, Joe Perches, Kaixu Xia,
	linux-kernel, linux-hardening


> -----Original Message-----
> From: Kees Cook [mailto:keescook@chromium.org]
> Sent: Thursday, August 26, 2021 2:34 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] rtlwifi: rtl8192de: Style clean-ups
> 
> Clean up some style issues:
> - Use ARRAY_SIZE() even though it's a u8 array.
> - 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>
> ---
>  drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c | 8 +++-----
>  drivers/net/wireless/realtek/rtlwifi/wifi.h          | 1 -
>  2 files changed, 3 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c
> b/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c
> index b32fa7a75f17..9807c9e91998 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++) {

There are still many places we can use ARRAY_SIZE() instead of sizeof().
Could you fix them within this file, even this driver?
Otherwise, this patch looks good to me.

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

>  			if (channel5g[place] == chnl) {
>  				place++;
>  				break;
> @@ -2861,16 +2861,14 @@ 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


^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH] rtlwifi: rtl8192de: Style clean-ups
  2021-08-26  0:58 ` Pkshih
@ 2021-08-26  2:32   ` Kees Cook
  0 siblings, 0 replies; 3+ messages in thread
From: Kees Cook @ 2021-08-26  2:32 UTC (permalink / raw)
  To: Pkshih
  Cc: Kalle Valo, David S. Miller, Jakub Kicinski, Larry Finger,
	Colin Ian King, linux-wireless, netdev, Joe Perches, Kaixu Xia,
	linux-kernel, linux-hardening

On Thu, Aug 26, 2021 at 12:58:13AM +0000, Pkshih wrote:
> 
> > -----Original Message-----
> > From: Kees Cook [mailto:keescook@chromium.org]
> > Sent: Thursday, August 26, 2021 2:34 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] rtlwifi: rtl8192de: Style clean-ups
> > 
> > Clean up some style issues:
> > - Use ARRAY_SIZE() even though it's a u8 array.
> > - 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>
> > ---
> >  drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c | 8 +++-----
> >  drivers/net/wireless/realtek/rtlwifi/wifi.h          | 1 -
> >  2 files changed, 3 insertions(+), 6 deletions(-)
> > 
> > diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c
> > b/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c
> > index b32fa7a75f17..9807c9e91998 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++) {
> 
> There are still many places we can use ARRAY_SIZE() instead of sizeof().
> Could you fix them within this file, even this driver?
> Otherwise, this patch looks good to me.

Sure! I found a couple more and have sent a v2.

-Kees

> 
> Acked-by: Ping-Ke Shih <pkshih@realtek.com>
> 
> >  			if (channel5g[place] == chnl) {
> >  				place++;
> >  				break;
> > @@ -2861,16 +2861,14 @@ 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
> 

-- 
Kees Cook

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2021-08-26  2:33 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2021-08-25 18:33 [PATCH] rtlwifi: rtl8192de: Style clean-ups Kees Cook
2021-08-26  0:58 ` Pkshih
2021-08-26  2:32   ` Kees Cook

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