diff mbox

DMA: PL330: return ENOMEM instead of 0 from pl330_alloc_chan_resources

Message ID 1347856065-14027-1-git-send-email-inderpal.singh@linaro.org
State Accepted
Headers show

Commit Message

Inderpal Singh Sept. 17, 2012, 4:27 a.m. UTC
Since 0 is not considered as error at dmaengine level, return ENOMEM
from pl330_alloc_chan_resources in case of failure.

Signed-off-by: Inderpal Singh <inderpal.singh@linaro.org>
---
 drivers/dma/pl330.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Jassi Brar Sept. 17, 2012, 5:47 a.m. UTC | #1
On Mon, Sep 17, 2012 at 9:57 AM, Inderpal Singh
<inderpal.singh@linaro.org> wrote:
> Since 0 is not considered as error at dmaengine level, return ENOMEM
> from pl330_alloc_chan_resources in case of failure.
>
> Signed-off-by: Inderpal Singh <inderpal.singh@linaro.org>

Acked-by: Jassi Brar <jassisinghbrar@gmail.com>


> ---
>  drivers/dma/pl330.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
> index e4feba6..14d881c 100644
> --- a/drivers/dma/pl330.c
> +++ b/drivers/dma/pl330.c
> @@ -2393,7 +2393,7 @@ static int pl330_alloc_chan_resources(struct dma_chan *chan)
>         pch->pl330_chid = pl330_request_channel(&pdmac->pif);
>         if (!pch->pl330_chid) {
>                 spin_unlock_irqrestore(&pch->lock, flags);
> -               return 0;
> +               return -ENOMEM;
>         }
>
>         tasklet_init(&pch->task, pl330_tasklet, (unsigned long) pch);
> --
> 1.7.9.5
>
Kukjin Kim Sept. 17, 2012, 11:01 a.m. UTC | #2
Inderpal Singh wrote:
> 
> Since 0 is not considered as error at dmaengine level, return ENOMEM
> from pl330_alloc_chan_resources in case of failure.
> 
> Signed-off-by: Inderpal Singh <inderpal.singh@linaro.org>

Acked-by: Kukjin Kim <kgene.kim@samsung.com>

Thanks.

Best regards,
Kgene.
--
Kukjin Kim <kgene.kim@samsung.com>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.

> ---
>  drivers/dma/pl330.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
> index e4feba6..14d881c 100644
> --- a/drivers/dma/pl330.c
> +++ b/drivers/dma/pl330.c
> @@ -2393,7 +2393,7 @@ static int pl330_alloc_chan_resources(struct
> dma_chan *chan)
>  	pch->pl330_chid = pl330_request_channel(&pdmac->pif);
>  	if (!pch->pl330_chid) {
>  		spin_unlock_irqrestore(&pch->lock, flags);
> -		return 0;
> +		return -ENOMEM;
>  	}
> 
>  	tasklet_init(&pch->task, pl330_tasklet, (unsigned long) pch);
> --
> 1.7.9.5
diff mbox

Patch

diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index e4feba6..14d881c 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2393,7 +2393,7 @@  static int pl330_alloc_chan_resources(struct dma_chan *chan)
 	pch->pl330_chid = pl330_request_channel(&pdmac->pif);
 	if (!pch->pl330_chid) {
 		spin_unlock_irqrestore(&pch->lock, flags);
-		return 0;
+		return -ENOMEM;
 	}
 
 	tasklet_init(&pch->task, pl330_tasklet, (unsigned long) pch);