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| author |   Paul Moore <pmoore@redhat.com> | 2014-03-31 09:49:07 -0400 |
|---|---|---|
| committer | Paul Moore <pmoore@redhat.com> | 2014-03-31 09:49:07 -0400 |
| commit | 6d32c850621b0be75777b9102b14f6268bbd9f0f (patch) | |
| tree | fec325f5c1ae763f5eccb3ca1254ab9d9d164b05 /lib/genalloc.c | |
| parent | selinux: correctly label /proc inodes in use before the policy is loaded (diff) | |
| parent | Linux 3.14 (diff) | |
| download | wireguard-linux-6d32c850621b0be75777b9102b14f6268bbd9f0f.tar.xz wireguard-linux-6d32c850621b0be75777b9102b14f6268bbd9f0f.zip | |
Merge tag 'v3.14' into next
Linux 3.14
Diffstat (limited to 'lib/genalloc.c')
| -rw-r--r-- | lib/genalloc.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/genalloc.c b/lib/genalloc.c index dda31168844f..bdb9a456bcbb 100644 --- a/lib/genalloc.c +++ b/lib/genalloc.c @@ -316,7 +316,7 @@ EXPORT_SYMBOL(gen_pool_alloc); * gen_pool_dma_alloc - allocate special memory from the pool for DMA usage * @pool: pool to allocate from * @size: number of bytes to allocate from the pool - * @dma: dma-view physical address + * @dma: dma-view physical address return value. Use NULL if unneeded. * * Allocate the requested number of bytes from the specified pool. * Uses the pool allocation function (with first-fit algorithm by default). @@ -334,7 +334,8 @@ void *gen_pool_dma_alloc(struct gen_pool *pool, size_t size, dma_addr_t *dma) if (!vaddr) return NULL; - *dma = gen_pool_virt_to_phys(pool, vaddr); + if (dma) + *dma = gen_pool_virt_to_phys(pool, vaddr); return (void *)vaddr; } |