diff options
| author | Ivan Kokshaysky <ink@jurassic.park.msu.ru> | 2008-04-02 22:04:43 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-03 00:28:19 +0200 |
| commit | c143d43aa3149b83e4b40624a27aa2b18638afec (patch) | |
| tree | e179afebfec65a61e2d71d87a35b27950256daaf | |
| parent | atmel_serial: fix uart/console concurrent access (diff) | |
| download | linux-c143d43aa3149b83e4b40624a27aa2b18638afec.tar.xz linux-c143d43aa3149b83e4b40624a27aa2b18638afec.zip | |
alpha: fix ALSA DMA mmap crash
Make dma_alloc_coherent respect gfp flags (__GFP_COMP is one that
matters).
Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Tested-by: Michael Cree <mcree@orcon.net.nz>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | arch/alpha/kernel/pci_iommu.c | 8 | ||||
| -rw-r--r-- | include/asm-alpha/dma-mapping.h | 2 | ||||
| -rw-r--r-- | include/asm-alpha/pci.h | 8 |
3 files changed, 13 insertions, 5 deletions
diff --git a/arch/alpha/kernel/pci_iommu.c b/arch/alpha/kernel/pci_iommu.c index 4e1c08636edd..dd6e334ab9e1 100644 --- a/arch/alpha/kernel/pci_iommu.c +++ b/arch/alpha/kernel/pci_iommu.c @@ -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 diff --git a/include/asm-alpha/dma-mapping.h b/include/asm-alpha/dma-mapping.h index 75a1aff5b57b..db351d1296f4 100644 --- a/include/asm-alpha/dma-mapping.h +++ b/include/asm-alpha/dma-mapping.h @@ -11,7 +11,7 @@ #define dma_unmap_single(dev, addr, size, dir) \ pci_unmap_single(alpha_gendev_to_pci(dev), addr, size, dir) #define dma_alloc_coherent(dev, size, addr, gfp) \ - pci_alloc_consistent(alpha_gendev_to_pci(dev), size, addr) + __pci_alloc_consistent(alpha_gendev_to_pci(dev), size, addr, gfp) #define dma_free_coherent(dev, size, va, addr) \ pci_free_consistent(alpha_gendev_to_pci(dev), size, va, addr) #define dma_map_page(dev, page, off, size, dir) \ diff --git a/include/asm-alpha/pci.h b/include/asm-alpha/pci.h index d5b10ef64364..d31fd49ff79a 100644 --- a/include/asm-alpha/pci.h +++ b/include/asm-alpha/pci.h @@ -76,7 +76,13 @@ extern inline void pcibios_penalize_isa_irq(int irq, int active) successful and sets *DMA_ADDRP to the pci side dma address as well, else DMA_ADDRP is undefined. */ -extern void *pci_alloc_consistent(struct pci_dev *, size_t, dma_addr_t *); +extern void *__pci_alloc_consistent(struct pci_dev *, size_t, + dma_addr_t *, gfp_t); +static inline void * +pci_alloc_consistent(struct pci_dev *dev, size_t size, dma_addr_t *dma) +{ + return __pci_alloc_consistent(dev, size, dma, GFP_ATOMIC); +} /* Free and unmap a consistent DMA buffer. CPU_ADDR and DMA_ADDR must be values that were returned from pci_alloc_consistent. SIZE must |