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This patch fixes a boot breakage on DA830 

that was introduced with EDMA DMA engine
 conversion. The bug has been there since
 v3.7 and has been marked for stable update.
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Merge tag 'davinci-for-v3.9-rc/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into fixes

Via Sekhar Nori <nsekhar@ti.com>:

This patch fixes a boot breakage on DA830
that was introduced with EDMA DMA engine
conversion. The bug has been there since
v3.7 and has been marked for stable update.

* tag 'davinci-for-v3.9-rc/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
  ARM: davinci: edma: fix dmaengine induced null pointer dereference on da830

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2013-03-12 15:04:06 +01:00
parent 27f423fe12 069552777a
commit 7b59496c11
1 changed files with 3 additions and 0 deletions
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3
arch/arm/mach-davinci/dma.c
View File

@ -743,6 +743,9 @@ EXPORT_SYMBOL(edma_free_channel);
*/
int edma_alloc_slot(unsigned ctlr, int slot)
{
if (!edma_cc[ctlr])
return -EINVAL;
if (slot >= 0)
slot = EDMA_CHAN_SLOT(slot);