2020-04-02 19:50:28

by Ezequiel Garcia

Subject: [PATCH v2 1/3] rkisp1: Get rid of unused variable warning

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.

Suggested-by: Robin Murphy <[email protected]>
Signed-off-by: Ezequiel Garcia <[email protected]>
---
drivers/staging/media/rkisp1/rkisp1-dev.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/media/rkisp1/rkisp1-dev.c b/drivers/staging/media/rkisp1/rkisp1-dev.c
index b1b3c058e957..3f6285709352 100644
--- a/drivers/staging/media/rkisp1/rkisp1-dev.c
+++ b/drivers/staging/media/rkisp1/rkisp1-dev.c
@@ -454,16 +454,17 @@ 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;
struct rkisp1_device *rkisp1;
struct v4l2_device *v4l2_dev;
unsigned int i;
int ret, irq;

- match = of_match_node(rkisp1_of_match, node);
+ clk_data = of_device_get_match_data(&pdev->dev);
+ if (!clk_data)
+ return -ENODEV;
+
rkisp1 = devm_kzalloc(dev, sizeof(*rkisp1), GFP_KERNEL);
if (!rkisp1)
return -ENOMEM;
@@ -487,7 +488,6 @@ static int rkisp1_probe(struct platform_device *pdev)
}

rkisp1->irq = irq;
- clk_data = match->data;

for (i = 0; i < clk_data->size; i++)
rkisp1->clks[i].id = clk_data->clks[i];
--
2.26.0.rc2

2020-04-02 19:53:23

by Helen Koike

Subject: Re: [PATCH v2 1/3] rkisp1: Get rid of unused variable warning

On 4/2/20 4:45 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.
>
> Suggested-by: Robin Murphy <[email protected]>
> Signed-off-by: Ezequiel Garcia <[email protected]>

Acked-by: Helen Koike <[email protected]>

> ---
> drivers/staging/media/rkisp1/rkisp1-dev.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/staging/media/rkisp1/rkisp1-dev.c b/drivers/staging/media/rkisp1/rkisp1-dev.c
> index b1b3c058e957..3f6285709352 100644
> --- a/drivers/staging/media/rkisp1/rkisp1-dev.c
> +++ b/drivers/staging/media/rkisp1/rkisp1-dev.c
> @@ -454,16 +454,17 @@ 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;
> struct rkisp1_device *rkisp1;
> struct v4l2_device *v4l2_dev;
> unsigned int i;
> int ret, irq;
>
> - match = of_match_node(rkisp1_of_match, node);
> + clk_data = of_device_get_match_data(&pdev->dev);
> + if (!clk_data)
> + return -ENODEV;
> +
> rkisp1 = devm_kzalloc(dev, sizeof(*rkisp1), GFP_KERNEL);
> if (!rkisp1)
> return -ENOMEM;
> @@ -487,7 +488,6 @@ static int rkisp1_probe(struct platform_device *pdev)
> }
>
> rkisp1->irq = irq;
> - clk_data = match->data;
>
> for (i = 0; i < clk_data->size; i++)
> rkisp1->clks[i].id = clk_data->clks[i];
>