[PATCH] rtl8xxxu: fix uninitialized return value in ret

[PATCH] rtl8xxxu: fix uninitialized return value in ret

[Colin King]

From: Colin Ian King <colin.king@canonical.com>

several functions are not initializing a return status in ret
resulting in garbage to be returned instead of 0 for success.
Currently, the calls to these functions are not checking the
return, however, it seems prudent to return the correct status
in case they are to be checked at a later date.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c
index abdff45..9262aad 100644
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c
@@ -5231,7 +5231,7 @@ static void rtl8xxxu_set_ampdu_min_space(struct rtl8xxxu_priv *priv, u8 density)
 static int rtl8xxxu_active_to_emu(struct rtl8xxxu_priv *priv)
 {
 	u8 val8;
-	int count, ret;
+	int count, ret = 0;
 
 	/* Start of rtl8723AU_card_enable_flow */
 	/* Act to Cardemu sequence*/
@@ -5281,7 +5281,7 @@ static int rtl8723bu_active_to_emu(struct rtl8xxxu_priv *priv)
 	u8 val8;
 	u16 val16;
 	u32 val32;
-	int count, ret;
+	int count, ret = 0;
 
 	/* Turn off RF */
 	rtl8xxxu_write8(priv, REG_RF_CTRL, 0);
@@ -5338,7 +5338,7 @@ static int rtl8xxxu_active_to_lps(struct rtl8xxxu_priv *priv)
 {
 	u8 val8;
 	u8 val32;
-	int count, ret;
+	int count, ret = 0;
 
 	rtl8xxxu_write8(priv, REG_TXPAUSE, 0xff);
 
-- 
2.7.4

Re: [PATCH] rtl8xxxu: fix uninitialized return value in ret

[Jes Sorensen]

Colin King <colin.king@canonical.com> writes:
> From: Colin Ian King <colin.king@canonical.com>
>
> several functions are not initializing a return status in ret
> resulting in garbage to be returned instead of 0 for success.
> Currently, the calls to these functions are not checking the
> return, however, it seems prudent to return the correct status
> in case they are to be checked at a later date.
>
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
>  drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)

Thanks for the patch! I'm surprised the compiler didn't warn about this.

I'll add it to my queue for rtl8xxxu.

Cheers,
Jes

>
> diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c
> index abdff45..9262aad 100644
> --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c
> +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c
> @@ -5231,7 +5231,7 @@ static void rtl8xxxu_set_ampdu_min_space(struct rtl8xxxu_priv *priv, u8 density)
>  static int rtl8xxxu_active_to_emu(struct rtl8xxxu_priv *priv)
>  {
>  	u8 val8;
> -	int count, ret;
> +	int count, ret = 0;
>  
>  	/* Start of rtl8723AU_card_enable_flow */
>  	/* Act to Cardemu sequence*/
> @@ -5281,7 +5281,7 @@ static int rtl8723bu_active_to_emu(struct rtl8xxxu_priv *priv)
>  	u8 val8;
>  	u16 val16;
>  	u32 val32;
> -	int count, ret;
> +	int count, ret = 0;
>  
>  	/* Turn off RF */
>  	rtl8xxxu_write8(priv, REG_RF_CTRL, 0);
> @@ -5338,7 +5338,7 @@ static int rtl8xxxu_active_to_lps(struct rtl8xxxu_priv *priv)
>  {
>  	u8 val8;
>  	u8 val32;
> -	int count, ret;
> +	int count, ret = 0;
>  
>  	rtl8xxxu_write8(priv, REG_TXPAUSE, 0xff);