diff mbox

[-next] dmaengine: ste_dma40: fix error return code in d40_probe()

Message ID CAPgLHd-Mw4MQwS8=p9+ZBHHehH7B-Hs49BqiUMrq-aV_5M4pQQ@mail.gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Wei Yongjun May 28, 2013, 9:06 a.m. UTC
From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

In many of the error handling case, the return value 'ret' not set
and 0 will be return from d40_probe() even if error, but we should
return a negative error code instead in those error handling case.
This patch fixed them, and also removed useless variable 'err'.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
---
 drivers/dma/ste_dma40.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

Comments

Andy Shevchenko May 28, 2013, 4:18 p.m. UTC | #1
Have you check the ux500-dma40 branch?

https://git.kernel.org/cgit/linux/kernel/git/linusw/linux-stericsson.git/log/?h=ux500-dma40

On Tue, May 28, 2013 at 12:06 PM, Wei Yongjun <weiyj.lk@gmail.com> wrote:
> From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
>
> In many of the error handling case, the return value 'ret' not set
> and 0 will be return from d40_probe() even if error, but we should
> return a negative error code instead in those error handling case.
> This patch fixed them, and also removed useless variable 'err'.
>
> Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
> ---
>  drivers/dma/ste_dma40.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
> index 71bf4ec..cbf9c62 100644
> --- a/drivers/dma/ste_dma40.c
> +++ b/drivers/dma/ste_dma40.c
> @@ -3474,7 +3474,6 @@ failure:
>
>  static int __init d40_probe(struct platform_device *pdev)
>  {
> -       int err;
>         int ret = -ENOENT;
>         struct d40_base *base;
>         struct resource *res = NULL;
> @@ -3576,6 +3575,7 @@ static int __init d40_probe(struct platform_device *pdev)
>                 if (IS_ERR(base->lcpa_regulator)) {
>                         d40_err(&pdev->dev, "Failed to get lcpa_regulator\n");
>                         base->lcpa_regulator = NULL;
> +                       ret = PTR_ERR(base->lcpa_regulator);
>                         goto failure;
>                 }
>
> @@ -3590,13 +3590,13 @@ static int __init d40_probe(struct platform_device *pdev)
>         }
>
>         base->initialized = true;
> -       err = d40_dmaengine_init(base, num_reserved_chans);
> -       if (err)
> +       ret = d40_dmaengine_init(base, num_reserved_chans);
> +       if (ret)
>                 goto failure;
>
>         base->dev->dma_parms = &base->dma_parms;
> -       err = dma_set_max_seg_size(base->dev, STEDMA40_MAX_SEG_SIZE);
> -       if (err) {
> +       ret = dma_set_max_seg_size(base->dev, STEDMA40_MAX_SEG_SIZE);
> +       if (ret) {
>                 d40_err(&pdev->dev, "Failed to set dma max seg size\n");
>                 goto failure;
>         }
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
Linus Walleij May 29, 2013, 6:27 p.m. UTC | #2
On Tue, May 28, 2013 at 11:06 AM, Wei Yongjun <weiyj.lk@gmail.com> wrote:

> From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
>
> In many of the error handling case, the return value 'ret' not set
> and 0 will be return from d40_probe() even if error, but we should
> return a negative error code instead in those error handling case.
> This patch fixed them, and also removed useless variable 'err'.
>
> Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

Hm it seems it does not apply on my dma40 branch (the same
as mentioned by Andy):
https://git.kernel.org/cgit/linux/kernel/git/linusw/linux-stericsson.git/log/?h=ux500-dma40

I have already queued some 36 patches from this branch into
ARM SoC so it is in -next today (and conflicting with this patch).

Could you rebase it and get Vinod's ACK so I can queue it?

Also pls include Lee Jones on CC.

Yours,
Linus Walleij
diff mbox

Patch

diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 71bf4ec..cbf9c62 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -3474,7 +3474,6 @@  failure:
 
 static int __init d40_probe(struct platform_device *pdev)
 {
-	int err;
 	int ret = -ENOENT;
 	struct d40_base *base;
 	struct resource *res = NULL;
@@ -3576,6 +3575,7 @@  static int __init d40_probe(struct platform_device *pdev)
 		if (IS_ERR(base->lcpa_regulator)) {
 			d40_err(&pdev->dev, "Failed to get lcpa_regulator\n");
 			base->lcpa_regulator = NULL;
+			ret = PTR_ERR(base->lcpa_regulator);
 			goto failure;
 		}
 
@@ -3590,13 +3590,13 @@  static int __init d40_probe(struct platform_device *pdev)
 	}
 
 	base->initialized = true;
-	err = d40_dmaengine_init(base, num_reserved_chans);
-	if (err)
+	ret = d40_dmaengine_init(base, num_reserved_chans);
+	if (ret)
 		goto failure;
 
 	base->dev->dma_parms = &base->dma_parms;
-	err = dma_set_max_seg_size(base->dev, STEDMA40_MAX_SEG_SIZE);
-	if (err) {
+	ret = dma_set_max_seg_size(base->dev, STEDMA40_MAX_SEG_SIZE);
+	if (ret) {
 		d40_err(&pdev->dev, "Failed to set dma max seg size\n");
 		goto failure;
 	}