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alpha: fix ALSA DMA mmap crash

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Make dma_alloc_coherent respect gfp flags (__GFP_COMP is one that
matters).

Signed-off-by: Ivan Kokshaysky <[email protected]>
Tested-by: Michael Cree <[email protected]>
Cc: Richard Henderson <[email protected]>
Cc: Jaroslav Kysela <[email protected]>
Cc: Takashi Iwai <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Ivan Kokshaysky 2008-04-02 13:04:43 -07:00 • committed by Linus Torvalds
commit c143d43aa3
3 changed files with 13 additions and 5 deletions
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8
arch/alpha/kernel/pci_iommu.c
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@ -424,11 +424,13 @@ EXPORT_SYMBOL(pci_unmap_page);
else DMA_ADDRP is undefined. */
void *
pci_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr_t *dma_addrp)
__pci_alloc_consistent(struct pci_dev *pdev, size_t size,
dma_addr_t *dma_addrp, gfp_t gfp)
{
void *cpu_addr;
long order = get_order(size);
gfp_t gfp = GFP_ATOMIC;
gfp &= ~GFP_DMA;
try_again:
cpu_addr = (void *)__get_free_pages(gfp, order);
@ -458,7 +460,7 @@ try_again:
return cpu_addr;
}
EXPORT_SYMBOL(pci_alloc_consistent);
EXPORT_SYMBOL(__pci_alloc_consistent);
/* Free and unmap a consistent DMA buffer. CPU_ADDR and DMA_ADDR must
be values that were returned from pci_alloc_consistent. SIZE must