forked from luck/tmp_suning_uos_patched
iommu/amd: Prevent binding other PCI drivers to IOMMU PCI devices
AMD IOMMU driver makes use of IOMMU PCI devices, so prevent binding other
PCI drivers to IOMMU PCI devices.
This fixes a bug reported by Boris that system suspend/resume gets broken
on AMD platforms. For more information, please refer to:
https://lkml.org/lkml/2015/9/26/89
Fixes: 991de2e590
("PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()")
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
parent
02685b1df0
commit
cbbc00be2c
|
@ -1256,6 +1256,9 @@ static int iommu_init_pci(struct amd_iommu *iommu)
|
|||
if (!iommu->dev)
|
||||
return -ENODEV;
|
||||
|
||||
/* Prevent binding other PCI device drivers to IOMMU devices */
|
||||
iommu->dev->match_driver = false;
|
||||
|
||||
pci_read_config_dword(iommu->dev, cap_ptr + MMIO_CAP_HDR_OFFSET,
|
||||
&iommu->cap);
|
||||
pci_read_config_dword(iommu->dev, cap_ptr + MMIO_RANGE_OFFSET,
|
||||
|
|
Loading…
Reference in New Issue
Block a user