diff mbox

[4/4] drivers/mmc/host/mxs-mmc.c: fix error return code

Message ID 1347869728-2696-4-git-send-email-peter.senna@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Peter Senna Tschudin Sept. 17, 2012, 8:15 a.m. UTC
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/mmc/host/mxs-mmc.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Marek Vasut Sept. 17, 2012, 10:09 a.m. UTC | #1
Dear Peter Senna Tschudin,

> From: Peter Senna Tschudin <peter.senna@gmail.com>

The patch description is a bit crap, but otherwise

Acked-by: Marek Vasut <marex@denx.de>

> 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/mmc/host/mxs-mmc.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
> index 80d1e6d..afd8fdd 100644
> --- a/drivers/mmc/host/mxs-mmc.c
> +++ b/drivers/mmc/host/mxs-mmc.c
> @@ -674,6 +674,7 @@ static int mxs_mmc_probe(struct platform_device *pdev)
>  	if (!ssp->dmach) {
>  		dev_err(mmc_dev(host->mmc),
>  			"%s: failed to request dma\n", __func__);
> +		ret = -ENODEV;
>  		goto out_clk_put;
>  	}

Best regards,
Marek Vasut
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Shawn Guo Sept. 19, 2012, 2:25 a.m. UTC | #2
On Mon, Sep 17, 2012 at 10:15:28AM +0200, 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>

Acked-by: Shawn Guo <shawn.guo@linaro.org>

> ---
>  drivers/mmc/host/mxs-mmc.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
> index 80d1e6d..afd8fdd 100644
> --- a/drivers/mmc/host/mxs-mmc.c
> +++ b/drivers/mmc/host/mxs-mmc.c
> @@ -674,6 +674,7 @@ static int mxs_mmc_probe(struct platform_device *pdev)
>  	if (!ssp->dmach) {
>  		dev_err(mmc_dev(host->mmc),
>  			"%s: failed to request dma\n", __func__);
> +		ret = -ENODEV;
>  		goto out_clk_put;
>  	}
>  
> -- 
> 1.7.11.4
> 

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diff mbox

Patch

diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index 80d1e6d..afd8fdd 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -674,6 +674,7 @@  static int mxs_mmc_probe(struct platform_device *pdev)
 	if (!ssp->dmach) {
 		dev_err(mmc_dev(host->mmc),
 			"%s: failed to request dma\n", __func__);
+		ret = -ENODEV;
 		goto out_clk_put;
 	}