redonkable/alistair23-linux
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Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

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* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/dma: pci_set_dma_mask() shouldn't fail if mask fits in RAM
This commit is contained in:
Linus Torvalds 2009-08-10 08:59:56 -07:00
parent 04e35357e2 b2f2e8fee3
commit 2c661a669b
1 changed files with 3 additions and 3 deletions
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6
arch/powerpc/kernel/dma.c
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@ -7,6 +7,7 @@
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/lmb.h>
#include <asm/bug.h>
#include <asm/abs_addr.h>
@ -90,11 +91,10 @@ static void dma_direct_unmap_sg(struct device *dev, struct scatterlist *sg,
static int dma_direct_dma_supported(struct device *dev, u64 mask)
{
#ifdef CONFIG_PPC64
/* Could be improved to check for memory though it better be
* done via some global so platforms can set the limit in case
/* Could be improved so platforms can set the limit in case
* they have limited DMA windows
*/
return mask >= DMA_BIT_MASK(32);
return mask >= (lmb_end_of_DRAM() - 1);
#else
return 1;
#endif