* [PATCH 2/2] drivers/video/exynos/exynos_mipi_dsi.c: fix error return code
@ 2012-10-03 12:40 Peter Senna Tschudin
2012-10-04 7:42 ` Donghwa Lee
2012-10-10 12:34 ` Florian Tobias Schandinat
0 siblings, 2 replies; 3+ messages in thread
From: Peter Senna Tschudin @ 2012-10-03 12:40 UTC (permalink / raw)
To: Inki Dae
Cc: kernel-janitors, Donghwa Lee, Kyungmin Park,
Florian Tobias Schandinat, linux-fbdev, linux-kernel
From: Peter Senna Tschudin <peter.senna@gmail.com>
Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
---
drivers/video/exynos/exynos_mipi_dsi.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/video/exynos/exynos_mipi_dsi.c b/drivers/video/exynos/exynos_mipi_dsi.c
index c4f25de..07d70a3 100644
--- a/drivers/video/exynos/exynos_mipi_dsi.c
+++ b/drivers/video/exynos/exynos_mipi_dsi.c
@@ -375,6 +375,7 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev)
dsim->clock = clk_get(&pdev->dev, "dsim0");
if (IS_ERR(dsim->clock)) {
dev_err(&pdev->dev, "failed to get dsim clock source\n");
+ ret = -ENODEV;
goto err_clock_get;
}
@@ -383,6 +384,7 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "failed to get io memory region\n");
+ ret = -ENODEV;
goto err_platform_get;
}
@@ -407,6 +409,7 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev)
dsim_ddi = exynos_mipi_dsi_bind_lcd_ddi(dsim, dsim_pd->lcd_panel_name);
if (!dsim_ddi) {
dev_err(&pdev->dev, "mipi_dsim_ddi object not found.\n");
+ ret = -EINVAL;
goto err_bind;
}
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH 2/2] drivers/video/exynos/exynos_mipi_dsi.c: fix error return code
2012-10-03 12:40 [PATCH 2/2] drivers/video/exynos/exynos_mipi_dsi.c: fix error return code Peter Senna Tschudin
@ 2012-10-04 7:42 ` Donghwa Lee
2012-10-10 12:34 ` Florian Tobias Schandinat
1 sibling, 0 replies; 3+ messages in thread
From: Donghwa Lee @ 2012-10-04 7:42 UTC (permalink / raw)
To: Peter Senna Tschudin
Cc: Inki Dae, kernel-janitors, Kyungmin Park,
Florian Tobias Schandinat, linux-fbdev, linux-kernel
On Wed, Oct 03, 2012 at 21:40, Peter Senna Tschudin wrote
> From: Peter Senna Tschudin <peter.senna@gmail.com>
>
> Convert a nonnegative error return code to a negative one, as returned
> elsewhere in the function.
>
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
>
> // <smpl>
> (
> if@p1 (\(ret < 0\|ret != 0\))
> { ... return ret; }
> |
> ret@p1 = 0
> )
> ... when != ret = e1
> when != &ret
> *if(...)
> {
> ... when != ret = e2
> when forall
> return ret;
> }
> // </smpl>
>
I agree with you. Other codes is already used negative error return codes.
>
> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
>
> ---
> drivers/video/exynos/exynos_mipi_dsi.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/video/exynos/exynos_mipi_dsi.c b/drivers/video/exynos/exynos_mipi_dsi.c
> index c4f25de..07d70a3 100644
> --- a/drivers/video/exynos/exynos_mipi_dsi.c
> +++ b/drivers/video/exynos/exynos_mipi_dsi.c
> @@ -375,6 +375,7 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev)
> dsim->clock = clk_get(&pdev->dev, "dsim0");
> if (IS_ERR(dsim->clock)) {
> dev_err(&pdev->dev, "failed to get dsim clock source\n");
> + ret = -ENODEV;
> goto err_clock_get;
> }
>
> @@ -383,6 +384,7 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev)
> res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> if (!res) {
> dev_err(&pdev->dev, "failed to get io memory region\n");
> + ret = -ENODEV;
> goto err_platform_get;
> }
>
> @@ -407,6 +409,7 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev)
> dsim_ddi = exynos_mipi_dsi_bind_lcd_ddi(dsim, dsim_pd->lcd_panel_name);
> if (!dsim_ddi) {
> dev_err(&pdev->dev, "mipi_dsim_ddi object not found.\n");
> + ret = -EINVAL;
> goto err_bind;
> }
>
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH 2/2] drivers/video/exynos/exynos_mipi_dsi.c: fix error return code
2012-10-03 12:40 [PATCH 2/2] drivers/video/exynos/exynos_mipi_dsi.c: fix error return code Peter Senna Tschudin
2012-10-04 7:42 ` Donghwa Lee
@ 2012-10-10 12:34 ` Florian Tobias Schandinat
1 sibling, 0 replies; 3+ messages in thread
From: Florian Tobias Schandinat @ 2012-10-10 12:34 UTC (permalink / raw)
To: Peter Senna Tschudin
Cc: Inki Dae, kernel-janitors, Donghwa Lee, Kyungmin Park,
linux-fbdev, linux-kernel
On 10/03/2012 12:40 PM, Peter Senna Tschudin wrote:
> From: Peter Senna Tschudin <peter.senna@gmail.com>
>
> Convert a nonnegative error return code to a negative one, as returned
> elsewhere in the function.
>
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
>
> // <smpl>
> (
> if@p1 (\(ret < 0\|ret != 0\))
> { ... return ret; }
> |
> ret@p1 = 0
> )
> ... when != ret = e1
> when != &ret
> *if(...)
> {
> ... when != ret = e2
> when forall
> return ret;
> }
> // </smpl>
>
>
> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Applied.
Thanks,
Florian Tobias Schandinat
>
> ---
> drivers/video/exynos/exynos_mipi_dsi.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/video/exynos/exynos_mipi_dsi.c b/drivers/video/exynos/exynos_mipi_dsi.c
> index c4f25de..07d70a3 100644
> --- a/drivers/video/exynos/exynos_mipi_dsi.c
> +++ b/drivers/video/exynos/exynos_mipi_dsi.c
> @@ -375,6 +375,7 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev)
> dsim->clock = clk_get(&pdev->dev, "dsim0");
> if (IS_ERR(dsim->clock)) {
> dev_err(&pdev->dev, "failed to get dsim clock source\n");
> + ret = -ENODEV;
> goto err_clock_get;
> }
>
> @@ -383,6 +384,7 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev)
> res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> if (!res) {
> dev_err(&pdev->dev, "failed to get io memory region\n");
> + ret = -ENODEV;
> goto err_platform_get;
> }
>
> @@ -407,6 +409,7 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev)
> dsim_ddi = exynos_mipi_dsi_bind_lcd_ddi(dsim, dsim_pd->lcd_panel_name);
> if (!dsim_ddi) {
> dev_err(&pdev->dev, "mipi_dsim_ddi object not found.\n");
> + ret = -EINVAL;
> goto err_bind;
> }
>
>
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2012-10-03 12:40 [PATCH 2/2] drivers/video/exynos/exynos_mipi_dsi.c: fix error return code Peter Senna Tschudin
2012-10-04 7:42 ` Donghwa Lee
2012-10-10 12:34 ` Florian Tobias Schandinat
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