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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2007-05-08 00:31:25 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-08 11:15:14 -0700
commitb247e8aaf2837715d31eb25828fa8b4eb0a659cd (patch)
treeb796caad363353128d47da9beefb9df10014ae64 /arch/cris
parentf19b121e21c1b032f6c612d2b9b499151f7b661b (diff)
downloadlinux-2.6.34-ux500-b247e8aaf2837715d31eb25828fa8b4eb0a659cd.tar.gz
dma_declare_coherent_memory wrong allocation
dma_declare_coherent_memory() allocates a bitmap 1 bit per page, it calculates the bitmap size based on size of long, but allocates bytes... Thanks to James Bottomley for clarifications and corrections. Signed-off-by: G. Liakhovetski <g.liakhovetski@gmx.de> Acked-by: James Bottomley <James.Bottomley@SteelEye.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/cris')
-rw-r--r--arch/cris/arch-v32/drivers/pci/dma.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/cris/arch-v32/drivers/pci/dma.c b/arch/cris/arch-v32/drivers/pci/dma.c
index 70d3bf0c92e..832fc63504d 100644
--- a/arch/cris/arch-v32/drivers/pci/dma.c
+++ b/arch/cris/arch-v32/drivers/pci/dma.c
@@ -76,7 +76,7 @@ int dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
{
void __iomem *mem_base;
int pages = size >> PAGE_SHIFT;
- int bitmap_size = (pages + 31)/32;
+ int bitmap_size = BITS_TO_LONGS(pages) * sizeof(long);
if ((flags & (DMA_MEMORY_MAP | DMA_MEMORY_IO)) == 0)
goto out;