diff mbox series

mmc: sdhci: Convert sdhci_allocate_bounce_buffer() to return void

Message ID 1540368084-32202-1-git-send-email-zhang.chunyan@linaro.org
State Superseded
Headers show
Series mmc: sdhci: Convert sdhci_allocate_bounce_buffer() to return void | expand

Commit Message

Chunyan Zhang Oct. 24, 2018, 8:01 a.m. UTC
The function sdhci_allocate_bounce_buffer() always return zero at
present, so there's no need to have a return value, that will also make
error path easier.

CC: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>

---
 drivers/mmc/host/sdhci.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

-- 
2.7.4

Comments

Ulf Hansson Oct. 24, 2018, 1:50 p.m. UTC | #1
On 24 October 2018 at 10:01, Chunyan Zhang <zhang.chunyan@linaro.org> wrote:
> The function sdhci_allocate_bounce_buffer() always return zero at

> present, so there's no need to have a return value, that will also make

> error path easier.

>

> CC: Linus Walleij <linus.walleij@linaro.org>

> Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>


This looks good to me, however please re-post to linux-mmc.

Kind regards
Uffe

> ---

>  drivers/mmc/host/sdhci.c | 15 +++++----------

>  1 file changed, 5 insertions(+), 10 deletions(-)

>

> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c

> index 1b3fbd9..e94f4aa 100644

> --- a/drivers/mmc/host/sdhci.c

> +++ b/drivers/mmc/host/sdhci.c

> @@ -3408,7 +3408,7 @@ void __sdhci_read_caps(struct sdhci_host *host, u16 *ver, u32 *caps, u32 *caps1)

>  }

>  EXPORT_SYMBOL_GPL(__sdhci_read_caps);

>

> -static int sdhci_allocate_bounce_buffer(struct sdhci_host *host)

> +static void sdhci_allocate_bounce_buffer(struct sdhci_host *host)

>  {

>         struct mmc_host *mmc = host->mmc;

>         unsigned int max_blocks;

> @@ -3446,7 +3446,7 @@ static int sdhci_allocate_bounce_buffer(struct sdhci_host *host)

>                  * Exiting with zero here makes sure we proceed with

>                  * mmc->max_segs == 1.

>                  */

> -               return 0;

> +               return;

>         }

>

>         host->bounce_addr = dma_map_single(mmc->parent,

> @@ -3456,7 +3456,7 @@ static int sdhci_allocate_bounce_buffer(struct sdhci_host *host)

>         ret = dma_mapping_error(mmc->parent, host->bounce_addr);

>         if (ret)

>                 /* Again fall back to max_segs == 1 */

> -               return 0;

> +               return;

>         host->bounce_buffer_size = bounce_size;

>

>         /* Lie about this since we're bouncing */

> @@ -3466,8 +3466,6 @@ static int sdhci_allocate_bounce_buffer(struct sdhci_host *host)

>

>         pr_info("%s bounce up to %u segments into one, max segment size %u bytes\n",

>                 mmc_hostname(mmc), max_blocks, bounce_size);

> -

> -       return 0;

>  }

>

>  int sdhci_setup_host(struct sdhci_host *host)

> @@ -3987,12 +3985,9 @@ int sdhci_setup_host(struct sdhci_host *host)

>          */

>         mmc->max_blk_count = (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535;

>

> -       if (mmc->max_segs == 1) {

> +       if (mmc->max_segs == 1)

>                 /* This may alter mmc->*_blk_* parameters */

> -               ret = sdhci_allocate_bounce_buffer(host);

> -               if (ret)

> -                       return ret;

> -       }

> +               sdhci_allocate_bounce_buffer(host);

>

>         return 0;

>

> --

> 2.7.4

>
diff mbox series

Patch

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 1b3fbd9..e94f4aa 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -3408,7 +3408,7 @@  void __sdhci_read_caps(struct sdhci_host *host, u16 *ver, u32 *caps, u32 *caps1)
 }
 EXPORT_SYMBOL_GPL(__sdhci_read_caps);
 
-static int sdhci_allocate_bounce_buffer(struct sdhci_host *host)
+static void sdhci_allocate_bounce_buffer(struct sdhci_host *host)
 {
 	struct mmc_host *mmc = host->mmc;
 	unsigned int max_blocks;
@@ -3446,7 +3446,7 @@  static int sdhci_allocate_bounce_buffer(struct sdhci_host *host)
 		 * Exiting with zero here makes sure we proceed with
 		 * mmc->max_segs == 1.
 		 */
-		return 0;
+		return;
 	}
 
 	host->bounce_addr = dma_map_single(mmc->parent,
@@ -3456,7 +3456,7 @@  static int sdhci_allocate_bounce_buffer(struct sdhci_host *host)
 	ret = dma_mapping_error(mmc->parent, host->bounce_addr);
 	if (ret)
 		/* Again fall back to max_segs == 1 */
-		return 0;
+		return;
 	host->bounce_buffer_size = bounce_size;
 
 	/* Lie about this since we're bouncing */
@@ -3466,8 +3466,6 @@  static int sdhci_allocate_bounce_buffer(struct sdhci_host *host)
 
 	pr_info("%s bounce up to %u segments into one, max segment size %u bytes\n",
 		mmc_hostname(mmc), max_blocks, bounce_size);
-
-	return 0;
 }
 
 int sdhci_setup_host(struct sdhci_host *host)
@@ -3987,12 +3985,9 @@  int sdhci_setup_host(struct sdhci_host *host)
 	 */
 	mmc->max_blk_count = (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535;
 
-	if (mmc->max_segs == 1) {
+	if (mmc->max_segs == 1)
 		/* This may alter mmc->*_blk_* parameters */
-		ret = sdhci_allocate_bounce_buffer(host);
-		if (ret)
-			return ret;
-	}
+		sdhci_allocate_bounce_buffer(host);
 
 	return 0;