diff mbox series

pinctrl: fix loop in k210_pinconf_get_drive()

Message ID 20220209180804.GA18385@kili
State New
Headers show
Series pinctrl: fix loop in k210_pinconf_get_drive() | expand

Commit Message

Dan Carpenter Feb. 9, 2022, 6:08 p.m. UTC 
The loop exited too early so the k210_pinconf_drive_strength[0] array
element was never used.

Fixes: d4c34d09ab03 ("pinctrl: Add RISC-V Canaan Kendryte K210 FPIOA driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 drivers/pinctrl/pinctrl-k210.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Sean Anderson Feb. 9, 2022, 6:13 p.m. UTC | #1 
On 2/9/22 1:08 PM, Dan Carpenter wrote:
> The loop exited too early so the k210_pinconf_drive_strength[0] array
> element was never used.
> 
> Fixes: d4c34d09ab03 ("pinctrl: Add RISC-V Canaan Kendryte K210 FPIOA driver")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> ---
>   drivers/pinctrl/pinctrl-k210.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pinctrl/pinctrl-k210.c b/drivers/pinctrl/pinctrl-k210.c
> index 49e32684dbb2..e3d03f2de7ef 100644
> --- a/drivers/pinctrl/pinctrl-k210.c
> +++ b/drivers/pinctrl/pinctrl-k210.c
> @@ -482,7 +482,7 @@ static int k210_pinconf_get_drive(unsigned int max_strength_ua)
>   {
>   	int i;
>   
> -	for (i = K210_PC_DRIVE_MAX; i; i--) {
> +	for (i = K210_PC_DRIVE_MAX; i >= 0; i--) {
>   		if (k210_pinconf_drive_strength[i] <= max_strength_ua)
>   			return i;
>   	}
> 

Reviewed-by: Sean Anderson <seanga2@gmail.com>
Damien Le Moal Feb. 9, 2022, 11:32 p.m. UTC | #2 
On 2/10/22 03:08, Dan Carpenter wrote:
> The loop exited too early so the k210_pinconf_drive_strength[0] array
> element was never used.
> 
> Fixes: d4c34d09ab03 ("pinctrl: Add RISC-V Canaan Kendryte K210 FPIOA driver")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> ---
>  drivers/pinctrl/pinctrl-k210.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pinctrl/pinctrl-k210.c b/drivers/pinctrl/pinctrl-k210.c
> index 49e32684dbb2..e3d03f2de7ef 100644
> --- a/drivers/pinctrl/pinctrl-k210.c
> +++ b/drivers/pinctrl/pinctrl-k210.c
> @@ -482,7 +482,7 @@ static int k210_pinconf_get_drive(unsigned int max_strength_ua)
>  {
>  	int i;
>  
> -	for (i = K210_PC_DRIVE_MAX; i; i--) {
> +	for (i = K210_PC_DRIVE_MAX; i >= 0; i--) {
>  		if (k210_pinconf_drive_strength[i] <= max_strength_ua)
>  			return i;
>  	}

Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Linus Walleij Feb. 11, 2022, 1:19 a.m. UTC | #3 
On Wed, Feb 9, 2022 at 7:08 PM Dan Carpenter <dan.carpenter@oracle.com> wrote:

> The loop exited too early so the k210_pinconf_drive_strength[0] array
> element was never used.
>
> Fixes: d4c34d09ab03 ("pinctrl: Add RISC-V Canaan Kendryte K210 FPIOA driver")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

Patch applied for fixes.

Yours,
Linus Walleij
diff mbox series

Patch

diff --git a/drivers/pinctrl/pinctrl-k210.c b/drivers/pinctrl/pinctrl-k210.c
index 49e32684dbb2..e3d03f2de7ef 100644
--- a/drivers/pinctrl/pinctrl-k210.c
+++ b/drivers/pinctrl/pinctrl-k210.c
@@ -482,7 +482,7 @@  static int k210_pinconf_get_drive(unsigned int max_strength_ua)
 {
 	int i;
 
-	for (i = K210_PC_DRIVE_MAX; i; i--) {
+	for (i = K210_PC_DRIVE_MAX; i >= 0; i--) {
 		if (k210_pinconf_drive_strength[i] <= max_strength_ua)
 			return i;
 	}