diff mbox

[v2] spi: atmel: cleanup wait_for_completion return handling

Message ID 1422891811-28541-1-git-send-email-hofrat@osadl.org (mailing list archive)
State Accepted
Commit 1369dea6496f10d536bcd8282bb21a1b982a912e
Headers show

Commit Message

Nicholas Mc Guire Feb. 2, 2015, 3:43 p.m. UTC
return type of wait_for_completion_timeout is unsigned long not int, this
patch adds an appropriate variable and fixes up the assignment. It removes 
the else branch as the only thing it was doing is assigning ret = 0; - but 
ret is never used thereafter so that is not needed. As the string in 
dev_err already states "timeout" there is little point in printing the 0. 
A typo in "trasfer" -> transfer is also fixed.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
---

v2: fixes commit message and whitespace damage reported by
    Mark Brown <broonie@kernel.org>

This patch was only compile tested with at91_dt_defconfig
(implies CONFIG_SPI_ATMEL=y)

Patch is against 3.19.0-rc6 (localversion-next = -next-20150202)

 drivers/spi/spi-atmel.c |   12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

Comments

Nicolas Ferre Feb. 4, 2015, 9:18 a.m. UTC | #1
Le 02/02/2015 16:43, Nicholas Mc Guire a écrit :
> return type of wait_for_completion_timeout is unsigned long not int, this
> patch adds an appropriate variable and fixes up the assignment. It removes 
> the else branch as the only thing it was doing is assigning ret = 0; - but 
> ret is never used thereafter so that is not needed. As the string in 
> dev_err already states "timeout" there is little point in printing the 0. 
> A typo in "trasfer" -> transfer is also fixed.
> 
> Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>

Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

Thanks. Bye.

> ---
> 
> v2: fixes commit message and whitespace damage reported by
>     Mark Brown <broonie@kernel.org>
> 
> This patch was only compile tested with at91_dt_defconfig
> (implies CONFIG_SPI_ATMEL=y)
> 
> Patch is against 3.19.0-rc6 (localversion-next = -next-20150202)
> 
>  drivers/spi/spi-atmel.c |   12 +++++-------
>  1 file changed, 5 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
> index 23d8f5f5..9af7841 100644
> --- a/drivers/spi/spi-atmel.c
> +++ b/drivers/spi/spi-atmel.c
> @@ -1046,6 +1046,7 @@ static int atmel_spi_one_transfer(struct spi_master *master,
>  	struct atmel_spi_device	*asd;
>  	int			timeout;
>  	int			ret;
> +	unsigned long		dma_timeout;
>  
>  	as = spi_master_get_devdata(master);
>  
> @@ -1103,15 +1104,12 @@ static int atmel_spi_one_transfer(struct spi_master *master,
>  
>  		/* interrupts are disabled, so free the lock for schedule */
>  		atmel_spi_unlock(as);
> -		ret = wait_for_completion_timeout(&as->xfer_completion,
> -							SPI_DMA_TIMEOUT);
> +		dma_timeout = wait_for_completion_timeout(&as->xfer_completion,
> +							  SPI_DMA_TIMEOUT);
>  		atmel_spi_lock(as);
> -		if (WARN_ON(ret == 0)) {
> -			dev_err(&spi->dev,
> -				"spi trasfer timeout, err %d\n", ret);
> +		if (WARN_ON(dma_timeout == 0)) {
> +			dev_err(&spi->dev, "spi transfer timeout\n");
>  			as->done_status = -EIO;
> -		} else {
> -			ret = 0;
>  		}
>  
>  		if (as->done_status)
>
Mark Brown Feb. 4, 2015, 11:26 a.m. UTC | #2
On Mon, Feb 02, 2015 at 10:43:31AM -0500, Nicholas Mc Guire wrote:
> return type of wait_for_completion_timeout is unsigned long not int, this
> patch adds an appropriate variable and fixes up the assignment. It removes 
> the else branch as the only thing it was doing is assigning ret = 0; - but 
> ret is never used thereafter so that is not needed. As the string in 
> dev_err already states "timeout" there is little point in printing the 0. 
> A typo in "trasfer" -> transfer is also fixed.

Applied, thanks.
diff mbox

Patch

diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
index 23d8f5f5..9af7841 100644
--- a/drivers/spi/spi-atmel.c
+++ b/drivers/spi/spi-atmel.c
@@ -1046,6 +1046,7 @@  static int atmel_spi_one_transfer(struct spi_master *master,
 	struct atmel_spi_device	*asd;
 	int			timeout;
 	int			ret;
+	unsigned long		dma_timeout;
 
 	as = spi_master_get_devdata(master);
 
@@ -1103,15 +1104,12 @@  static int atmel_spi_one_transfer(struct spi_master *master,
 
 		/* interrupts are disabled, so free the lock for schedule */
 		atmel_spi_unlock(as);
-		ret = wait_for_completion_timeout(&as->xfer_completion,
-							SPI_DMA_TIMEOUT);
+		dma_timeout = wait_for_completion_timeout(&as->xfer_completion,
+							  SPI_DMA_TIMEOUT);
 		atmel_spi_lock(as);
-		if (WARN_ON(ret == 0)) {
-			dev_err(&spi->dev,
-				"spi trasfer timeout, err %d\n", ret);
+		if (WARN_ON(dma_timeout == 0)) {
+			dev_err(&spi->dev, "spi transfer timeout\n");
 			as->done_status = -EIO;
-		} else {
-			ret = 0;
 		}
 
 		if (as->done_status)