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qcacmn: Add NULL check for dma address before calling unmap

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Add NULL check for dma address of buffer before calling unmap.

Change-Id: Id10a767d97fc1328b6d42e804f5a3e8639ff8fbf
CRs-Fixed: 2021902
This commit is contained in:
Poddar, Siddarth 2017-03-20 13:20:33 +05:30 • committed by Sandeep Puligilla
commit 9a562cb5bc
1 changed files with 3 additions and 2 deletions
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5
qdf/linux/src/qdf_nbuf.c
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@ -366,8 +366,9 @@ void __qdf_nbuf_unmap_single(qdf_device_t osdev, qdf_nbuf_t buf,
void __qdf_nbuf_unmap_single(qdf_device_t osdev, qdf_nbuf_t buf,
qdf_dma_dir_t dir)
{
dma_unmap_single(osdev->dev, QDF_NBUF_CB_PADDR(buf),
skb_end_pointer(buf) - buf->data, dir);
if (QDF_NBUF_CB_PADDR(buf))
dma_unmap_single(osdev->dev, QDF_NBUF_CB_PADDR(buf),
skb_end_pointer(buf) - buf->data, dir);
}
#endif
EXPORT_SYMBOL(__qdf_nbuf_unmap_single);