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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  x86/PCI: Adjust GFP mask handling for coherent allocations
  PCI ASPM: fix oops on root port removal
This commit is contained in:
Linus Torvalds 2009-11-11 11:34:14 -08:00
parent e5d45abe14 eb647138ac
commit 55871bdd03
3 changed files with 13 additions and 9 deletions
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10
arch/x86/include/asm/dma-mapping.h
View File

@ -14,6 +14,12 @@
#include <asm/swiotlb.h> #include <asm/swiotlb.h>
#include <asm-generic/dma-coherent.h> #include <asm-generic/dma-coherent.h>
#ifdef CONFIG_ISA
# define ISA_DMA_BIT_MASK DMA_BIT_MASK(24)
#else
# define ISA_DMA_BIT_MASK DMA_BIT_MASK(32)
#endif
extern dma_addr_t bad_dma_address; extern dma_addr_t bad_dma_address;
extern int iommu_merge; extern int iommu_merge;
extern struct device x86_dma_fallback_dev; extern struct device x86_dma_fallback_dev;
@ -124,10 +130,8 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
if (dma_alloc_from_coherent(dev, size, dma_handle, &memory)) if (dma_alloc_from_coherent(dev, size, dma_handle, &memory))
return memory; return memory;
if (!dev) { if (!dev)
dev = &x86_dma_fallback_dev; dev = &x86_dma_fallback_dev;
gfp |= GFP_DMA;
}
if (!is_device_dma_capable(dev)) if (!is_device_dma_capable(dev))
return NULL; return NULL;

6
arch/x86/kernel/pci-dma.c
View File

@ -45,12 +45,10 @@ int iommu_pass_through __read_mostly;
dma_addr_t bad_dma_address __read_mostly = 0; dma_addr_t bad_dma_address __read_mostly = 0;
EXPORT_SYMBOL(bad_dma_address); EXPORT_SYMBOL(bad_dma_address);
/* Dummy device used for NULL arguments (normally ISA). Better would /* Dummy device used for NULL arguments (normally ISA). */
be probably a smaller DMA mask, but this is bug-to-bug compatible
to older i386. */
struct device x86_dma_fallback_dev = { struct device x86_dma_fallback_dev = {
.init_name = "fallback device", .init_name = "fallback device",
.coherent_dma_mask = DMA_BIT_MASK(32), .coherent_dma_mask = ISA_DMA_BIT_MASK,
.dma_mask = &x86_dma_fallback_dev.coherent_dma_mask, .dma_mask = &x86_dma_fallback_dev.coherent_dma_mask,
}; };
EXPORT_SYMBOL(x86_dma_fallback_dev); EXPORT_SYMBOL(x86_dma_fallback_dev);

2
drivers/pci/pcie/aspm.c
View File

@ -656,8 +656,10 @@ void pcie_aspm_exit_link_state(struct pci_dev *pdev)
free_link_state(link); free_link_state(link);
/* Recheck latencies and configure upstream links */ /* Recheck latencies and configure upstream links */
if (parent_link) {
pcie_update_aspm_capable(root); pcie_update_aspm_capable(root);
pcie_config_aspm_path(parent_link); pcie_config_aspm_path(parent_link);
}
out: out:
mutex_unlock(&aspm_lock); mutex_unlock(&aspm_lock);
up_read(&pci_bus_sem); up_read(&pci_bus_sem);