* [PATCH] media: pxa_camera: Fix check for pdev->dev.of_node
@ 2018-09-21 10:00 Nathan Chancellor
2018-09-21 16:58 ` Nick Desaulniers
0 siblings, 1 reply; 2+ messages in thread
From: Nathan Chancellor @ 2018-09-21 10:00 UTC (permalink / raw)
To: Mauro Carvalho Chehab
Cc: linux-media, linux-kernel, Nick Desaulniers, Nathan Chancellor
Clang warns that the address of a pointer will always evaluated as true
in a boolean context.
drivers/media/platform/pxa_camera.c:2400:17: warning: address of
'pdev->dev.of_node' will always evaluate to 'true'
[-Wpointer-bool-conversion]
if (&pdev->dev.of_node && !pcdev->pdata) {
~~~~~~~~~~^~~~~~~ ~~
1 warning generated.
Judging from the rest of the kernel, it seems like this was an error and
just the value of of_node should be checked rather than the address.
Reported-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
---
drivers/media/platform/pxa_camera.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/pxa_camera.c b/drivers/media/platform/pxa_camera.c
index 3288d22de2a0..6717834e8041 100644
--- a/drivers/media/platform/pxa_camera.c
+++ b/drivers/media/platform/pxa_camera.c
@@ -2397,7 +2397,7 @@ static int pxa_camera_probe(struct platform_device *pdev)
pcdev->res = res;
pcdev->pdata = pdev->dev.platform_data;
- if (&pdev->dev.of_node && !pcdev->pdata) {
+ if (pdev->dev.of_node && !pcdev->pdata) {
err = pxa_camera_pdata_from_dt(&pdev->dev, pcdev, &pcdev->asd);
} else {
pcdev->platform_flags = pcdev->pdata->flags;
--
2.19.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] media: pxa_camera: Fix check for pdev->dev.of_node
2018-09-21 10:00 [PATCH] media: pxa_camera: Fix check for pdev->dev.of_node Nathan Chancellor
@ 2018-09-21 16:58 ` Nick Desaulniers
0 siblings, 0 replies; 2+ messages in thread
From: Nick Desaulniers @ 2018-09-21 16:58 UTC (permalink / raw)
To: Nathan Chancellor; +Cc: Mauro Carvalho Chehab, linux-media, LKML
On Fri, Sep 21, 2018 at 3:00 AM Nathan Chancellor
<natechancellor@gmail.com> wrote:
>
> Clang warns that the address of a pointer will always evaluated as true
> in a boolean context.
>
> drivers/media/platform/pxa_camera.c:2400:17: warning: address of
> 'pdev->dev.of_node' will always evaluate to 'true'
> [-Wpointer-bool-conversion]
> if (&pdev->dev.of_node && !pcdev->pdata) {
> ~~~~~~~~~~^~~~~~~ ~~
> 1 warning generated.
>
> Judging from the rest of the kernel, it seems like this was an error and
> just the value of of_node should be checked rather than the address.
>
> Reported-by: Nick Desaulniers <ndesaulniers@google.com>
> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
> ---
> drivers/media/platform/pxa_camera.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/pxa_camera.c b/drivers/media/platform/pxa_camera.c
> index 3288d22de2a0..6717834e8041 100644
> --- a/drivers/media/platform/pxa_camera.c
> +++ b/drivers/media/platform/pxa_camera.c
> @@ -2397,7 +2397,7 @@ static int pxa_camera_probe(struct platform_device *pdev)
> pcdev->res = res;
>
> pcdev->pdata = pdev->dev.platform_data;
> - if (&pdev->dev.of_node && !pcdev->pdata) {
> + if (pdev->dev.of_node && !pcdev->pdata) {
pdev->dev.of_node is a `struct device_node *`, so this is the correct
way to check that it's not NULL. It's use in
pxa_camera_pdata_from_dt() is necessitated on the caller checking that
it's not NULL.
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
> err = pxa_camera_pdata_from_dt(&pdev->dev, pcdev, &pcdev->asd);
> } else {
> pcdev->platform_flags = pcdev->pdata->flags;
> --
> 2.19.0
>
--
Thanks,
~Nick Desaulniers
^ permalink raw reply [flat|nested] 2+ messages in thread
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