lkml.org 
[lkml]   [2011]   [Oct]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/3] sound/soc/mxs/mxs-saif.c: keep pointer to resource so it can be freed
Date
From: Julia Lawall <julia@diku.dk>

Add a new variable for storing resources accessed subsequent to the one
accessed using request_mem_region, so the one accessed using
request_mem_region can be released if needed.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
expression E, E1;
identifier f;
statement S1,S2,S3;
@@

if (E == NULL)
{
... when != if (E == NULL || ...) S1 else S2
when != E = E1
*E->f
... when any
return ...;
}
else S3
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>

---
sound/soc/mxs/mxs-saif.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/sound/soc/mxs/mxs-saif.c b/sound/soc/mxs/mxs-saif.c
index 401944c..e12ff78 100644
--- a/sound/soc/mxs/mxs-saif.c
+++ b/sound/soc/mxs/mxs-saif.c
@@ -617,7 +617,7 @@ static irqreturn_t mxs_saif_irq(int irq, void *dev_id)

static int mxs_saif_probe(struct platform_device *pdev)
{
- struct resource *res;
+ struct resource *res, *res1;
struct mxs_saif *saif;
struct mxs_saif_platform_data *pdata;
int ret = 0;
@@ -676,14 +676,14 @@ static int mxs_saif_probe(struct platform_device *pdev)
goto failed_ioremap;
}

- res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
- if (!res) {
+ res1 = platform_get_resource(pdev, IORESOURCE_DMA, 0);
+ if (!res1) {
ret = -ENODEV;
dev_err(&pdev->dev, "failed to get dma resource: %d\n",
ret);
goto failed_ioremap;
}
- saif->dma_param.chan_num = res->start;
+ saif->dma_param.chan_num = res1->start;

saif->irq = platform_get_irq(pdev, 0);
if (saif->irq < 0) {


\
 
 \ /
  Last update: 2011-10-18 04:51    [from the cache]
©2003-2011 Jasper Spaans