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kernel: add missing null pointer check for mips dma ops inline patch on 3.18

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Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 43511
This commit is contained in:
Felix Fietkau 2014-12-03 18:17:17 +00:00
parent 6ad5109211
commit 426467beba
1 changed files with 9 additions and 0 deletions
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9
target/linux/generic/patches-3.18/132-mips_inline_dma_ops.patch
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@ -423,6 +423,15 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
}
static inline int
@@ -54,7 +391,7 @@ dma_set_mask(struct device *dev, u64 mas
if(!dev->dma_mask || !dma_supported(dev, mask))
return -EIO;
- if (ops->set_dma_mask)
+ if (ops && ops->set_dma_mask)
return ops->set_dma_mask(dev, mask);
*dev->dma_mask = mask;
@@ -74,7 +411,11 @@ static inline void *dma_alloc_attrs(stru
void *ret;
struct dma_map_ops *ops = get_dma_ops(dev);