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Merge branch 'v3.7-samsung-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes 

From Kukjin Kim <kgene.kim@samsung.com>:

Samsung fixes for v3.7

* 'v3.7-samsung-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: S3C24XX: Fix potential NULL pointer dereference error

This would have been ok to delay to 3.8 according to Kukjin, but since
it's an obvious bug fix and a potential NULL pointer dereference, it
seem appropriate for a late 3.7 submission.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2012-11-29 15:07:27 +01:00
parent 70e1584d47 70b9b24d4d
commit 9434d24b11
1 changed files with 5 additions and 4 deletions
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9
arch/arm/plat-s3c24xx/dma.c
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@ -473,12 +473,13 @@ int s3c2410_dma_enqueue(enum dma_ch channel, void *id,
pr_debug("dma%d: %s: buffer %p queued onto non-empty channel\n",
chan->number, __func__, buf);
if (chan->end == NULL)
if (chan->end == NULL) {
pr_debug("dma%d: %s: %p not empty, and chan->end==NULL?\n",
chan->number, __func__, chan);
chan->end->next = buf;
chan->end = buf;
} else {
chan->end->next = buf;
chan->end = buf;
}
}
/* if necessary, update the next buffer field */