diff mbox

[v2,1/4] drivers/mmc/host/dw_mmc.c: fix error return code

Message ID 1347884417-26754-1-git-send-email-peter.senna@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Peter Senna Tschudin Sept. 17, 2012, 12:20 p.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/dw_mmc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Comments

Seungwon Jeon Sept. 18, 2012, 10:13 a.m. UTC | #1 
On Monday, September 17, 2012, Peter Senna Tschudin <peter.senna@gmail.com> 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>

Looks good.
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>

> --
> 1.7.11.4

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diff mbox

Patch

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 36f98c0..43a2663 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2039,8 +2039,10 @@  int dw_mci_probe(struct dw_mci *host)
 	tasklet_init(&host->tasklet, dw_mci_tasklet_func, (unsigned long)host);
 	host->card_workqueue = alloc_workqueue("dw-mci-card",
 			WQ_MEM_RECLAIM | WQ_NON_REENTRANT, 1);
-	if (!host->card_workqueue)
+	if (!host->card_workqueue) {
+		ret = -ENOMEM;
 		goto err_dmaunmap;
+	}
 	INIT_WORK(&host->card_work, dw_mci_work_routine_card);
 	ret = request_irq(host->irq, dw_mci_interrupt, host->irq_flags, "dw-mci", host);
 	if (ret)