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authorJulia Lawall <julia@diku.dk>2010-08-23 14:31:34 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-23 11:41:24 -0700
commit6e0c64f4ddf4a76a04108c1e24132d5d7dea8872 (patch)
tree581e5a5bf54f854be60ba1c69fd400589c307bcb /arch
parentdc4c26bfedcdd2b52231864c130bee2388e0eae4 (diff)
downloadlinux-linaro-android-6e0c64f4ddf4a76a04108c1e24132d5d7dea8872.tar.gz
arch/mn10300/mm: eliminate NULL dereference
dev_name always dereferences its argument, so it should not be called if the argument is NULL. The function indeed later tests the argument for being NULL. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression dev,E; @@ *dev_name(dev) ... when != dev = E ( *dev == NULL | *dev != NULL ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/mn10300/mm/dma-alloc.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/mn10300/mm/dma-alloc.c b/arch/mn10300/mm/dma-alloc.c
index 4e34880bea0..159acb02cfd 100644
--- a/arch/mn10300/mm/dma-alloc.c
+++ b/arch/mn10300/mm/dma-alloc.c
@@ -25,7 +25,8 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
unsigned long addr;
void *ret;
- printk("dma_alloc_coherent(%s,%zu,,%x)\n", dev_name(dev), size, gfp);
+ pr_debug("dma_alloc_coherent(%s,%zu,%x)\n",
+ dev ? dev_name(dev) : "?", size, gfp);
if (0xbe000000 - pci_sram_allocated >= size) {
size = (size + 255) & ~255;