Re: [PATCH 1/3] rkisp1: Get rid of unused variable warning

Robin Murphy
2020-04-02T09:48:08Z

On 2020-04-01 10:37 pm, Ezequiel Garcia wrote:
> If CONFIG_OF is not selected, the compiler will complain:
>
> drivers/staging/media/rkisp1/rkisp1-dev.c: In function ‘rkisp1_probe’:
> drivers/staging/media/rkisp1/rkisp1-dev.c:457:22: warning: unused variable ‘node’ [-Wunused-variable]
> 457 | struct device_node *node = pdev->dev.of_node;
>
> Rework the code slightly and make the compiler happy.
>
> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
> ---
> drivers/staging/media/rkisp1/rkisp1-dev.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/staging/media/rkisp1/rkisp1-dev.c b/drivers/staging/media/rkisp1/rkisp1-dev.c
> index b1b3c058e957..5e7e797aad71 100644
> --- a/drivers/staging/media/rkisp1/rkisp1-dev.c
> +++ b/drivers/staging/media/rkisp1/rkisp1-dev.c
> @@ -454,7 +454,6 @@ static void rkisp1_debug_init(struct rkisp1_device *rkisp1)
>
> static int rkisp1_probe(struct platform_device *pdev)
> {
> - struct device_node *node = pdev->dev.of_node;
> const struct rkisp1_match_data *clk_data;
> const struct of_device_id *match;
> struct device *dev = &pdev->dev;
> @@ -463,7 +462,7 @@ static int rkisp1_probe(struct platform_device *pdev)
> unsigned int i;
> int ret, irq;
>
> - match = of_match_node(rkisp1_of_match, node);
> + match = of_match_node(rkisp1_of_match, pdev->dev.of_node);

FWIW you could clean up "match" too by using of_device_get_match_data().

Robin.

> rkisp1 = devm_kzalloc(dev, sizeof(*rkisp1), GFP_KERNEL);
> if (!rkisp1)
> return -ENOMEM;
>