Patchwork mfd: mxs-lradc: Mark expected switch fall-through

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Submitter Gustavo A. R. Silva
Date Feb. 11, 2019, 10:48 p.m.
Message ID <20190211224827.GA28902@embeddedor>
Download mbox | patch
Permalink /patch/723363/
State New
Headers show

Comments

Gustavo A. R. Silva - Feb. 11, 2019, 10:48 p.m.
In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warning:

drivers/mfd/mxs-lradc.c: In function ‘mxs_lradc_probe’:
drivers/mfd/mxs-lradc.c:179:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (lradc->soc == IMX28_LRADC) {
       ^
drivers/mfd/mxs-lradc.c:185:3: note: here
   default:
   ^~~~~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

Notice that, in this particular case, the code comment is modified
in accordance with what GCC is expecting to find.

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
 drivers/mfd/mxs-lradc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
Lee Jones - Feb. 14, 2019, 9:16 a.m.
On Mon, 11 Feb 2019, Gustavo A. R. Silva wrote:

> In preparation to enabling -Wimplicit-fallthrough, mark switch
> cases where we are expecting to fall through.
> 
> This patch fixes the following warning:
> 
> drivers/mfd/mxs-lradc.c: In function ‘mxs_lradc_probe’:
> drivers/mfd/mxs-lradc.c:179:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
>     if (lradc->soc == IMX28_LRADC) {
>        ^
> drivers/mfd/mxs-lradc.c:185:3: note: here
>    default:
>    ^~~~~~~
> 
> Warning level 3 was used: -Wimplicit-fallthrough=3
> 
> Notice that, in this particular case, the code comment is modified
> in accordance with what GCC is expecting to find.
> 
> This patch is part of the ongoing efforts to enable
> -Wimplicit-fallthrough.
> 
> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
> ---
>  drivers/mfd/mxs-lradc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied, thanks.

Patch

diff --git a/drivers/mfd/mxs-lradc.c b/drivers/mfd/mxs-lradc.c
index 98e732a7ae96..a09a8d06302b 100644
--- a/drivers/mfd/mxs-lradc.c
+++ b/drivers/mfd/mxs-lradc.c
@@ -181,7 +181,7 @@  static int mxs_lradc_probe(struct platform_device *pdev)
 					MXS_LRADC_TOUCHSCREEN_5WIRE;
 				break;
 			}
-			/* fall through to an error message for i.MX23 */
+			/* fall through - to an error message for i.MX23 */
 		default:
 			dev_err(&pdev->dev,
 				"Unsupported number of touchscreen wires (%d)\n"