diff mbox series

pinctrl: lpc18xx: mark expected switch fall-throughs

Message ID 20180815171035.GA17360@embeddedor.com (mailing list archive)
State New, archived
Headers show
Series pinctrl: lpc18xx: mark expected switch fall-throughs | expand

Commit Message

Gustavo A. R. Silva Aug. 15, 2018, 5:10 p.m. UTC
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 1292308 ("Missing break in switch")
Addresses-Coverity-ID: 1292309 ("Missing break in switch")
Addresses-Coverity-ID: 1309546 ("Missing break in switch")
Addresses-Coverity-ID: 1357369 ("Missing break in switch")
Addresses-Coverity-ID: 1357389 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
 drivers/pinctrl/pinctrl-lpc18xx.c | 6 ++++++
 1 file changed, 6 insertions(+)

Comments

Vladimir Zapolskiy Aug. 17, 2018, 3:32 p.m. UTC | #1
On 08/15/2018 08:10 PM, Gustavo A. R. Silva wrote:
> In preparation to enabling -Wimplicit-fallthrough, mark switch cases
> where we are expecting to fall through.
> 
> Addresses-Coverity-ID: 1292308 ("Missing break in switch")
> Addresses-Coverity-ID: 1292309 ("Missing break in switch")
> Addresses-Coverity-ID: 1309546 ("Missing break in switch")
> Addresses-Coverity-ID: 1357369 ("Missing break in switch")
> Addresses-Coverity-ID: 1357389 ("Missing break in switch")
> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
> ---
>  drivers/pinctrl/pinctrl-lpc18xx.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/pinctrl/pinctrl-lpc18xx.c b/drivers/pinctrl/pinctrl-lpc18xx.c
> index 190f17e..a14bc5e 100644
> --- a/drivers/pinctrl/pinctrl-lpc18xx.c
> +++ b/drivers/pinctrl/pinctrl-lpc18xx.c
> @@ -844,8 +844,11 @@ static int lpc18xx_pconf_get_pin(struct pinctrl_dev *pctldev, unsigned param,
>  		*arg = (reg & LPC18XX_SCU_PIN_EHD_MASK) >> LPC18XX_SCU_PIN_EHD_POS;
>  		switch (*arg) {
>  		case 3: *arg += 5;
> +			/* fall through */
>  		case 2: *arg += 5;
> +			/* fall through */
>  		case 1: *arg += 3;
> +			/* fall through */
>  		case 0: *arg += 4;
>  		}
>  		break;
> @@ -1060,8 +1063,11 @@ static int lpc18xx_pconf_set_pin(struct pinctrl_dev *pctldev, unsigned param,
>  
>  		switch (param_val) {
>  		case 20: param_val -= 5;
> +			 /* fall through */
>  		case 14: param_val -= 5;
> +			 /* fall through */
>  		case  8: param_val -= 3;
> +			 /* fall through */
>  		case  4: param_val -= 4;
>  			 break;
>  		default:
> 

The code snippets are about a mind-blowing hyper-optimization, but I took
it as a chance to verify the correctness, and there are no issues found.

Reviewed-by: Vladimir Zapolskiy <vz@mleia.com>

--
Best wishes,
Vladimir
Linus Walleij Aug. 29, 2018, 11:47 a.m. UTC | #2
On Wed, Aug 15, 2018 at 7:10 PM Gustavo A. R. Silva
<gustavo@embeddedor.com> wrote:

> In preparation to enabling -Wimplicit-fallthrough, mark switch cases
> where we are expecting to fall through.
>
> Addresses-Coverity-ID: 1292308 ("Missing break in switch")
> Addresses-Coverity-ID: 1292309 ("Missing break in switch")
> Addresses-Coverity-ID: 1309546 ("Missing break in switch")
> Addresses-Coverity-ID: 1357369 ("Missing break in switch")
> Addresses-Coverity-ID: 1357389 ("Missing break in switch")
> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>

Patch applied.

Yours,
Linus Walleij
diff mbox series

Patch

diff --git a/drivers/pinctrl/pinctrl-lpc18xx.c b/drivers/pinctrl/pinctrl-lpc18xx.c
index 190f17e..a14bc5e 100644
--- a/drivers/pinctrl/pinctrl-lpc18xx.c
+++ b/drivers/pinctrl/pinctrl-lpc18xx.c
@@ -844,8 +844,11 @@  static int lpc18xx_pconf_get_pin(struct pinctrl_dev *pctldev, unsigned param,
 		*arg = (reg & LPC18XX_SCU_PIN_EHD_MASK) >> LPC18XX_SCU_PIN_EHD_POS;
 		switch (*arg) {
 		case 3: *arg += 5;
+			/* fall through */
 		case 2: *arg += 5;
+			/* fall through */
 		case 1: *arg += 3;
+			/* fall through */
 		case 0: *arg += 4;
 		}
 		break;
@@ -1060,8 +1063,11 @@  static int lpc18xx_pconf_set_pin(struct pinctrl_dev *pctldev, unsigned param,
 
 		switch (param_val) {
 		case 20: param_val -= 5;
+			 /* fall through */
 		case 14: param_val -= 5;
+			 /* fall through */
 		case  8: param_val -= 3;
+			 /* fall through */
 		case  4: param_val -= 4;
 			 break;
 		default: