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iommu/amd: Remove find_last_devid_on_pci() 

The value read from the PCI header is not reliable, so
remove this code.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel 2015-10-20 17:33:45 +02:00
parent 226e889b20
commit 393c092a4d
1 changed files with 0 additions and 19 deletions
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19
drivers/iommu/amd_iommu_init.c
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@ -407,20 +407,6 @@ static inline int ivhd_entry_length(u8 *ivhd)
return 0x04 << (*ivhd >> 6); return 0x04 << (*ivhd >> 6);
} }
/*
* This function reads the last device id the IOMMU has to handle from the PCI
* capability header for this IOMMU
*/
static int __init find_last_devid_on_pci(int bus, int dev, int fn, int cap_ptr)
{
u32 cap;
cap = read_pci_config(bus, dev, fn, cap_ptr+MMIO_RANGE_OFFSET);
update_last_devid(PCI_DEVID(MMIO_GET_BUS(cap), MMIO_GET_LD(cap)));
return 0;
}
/* /*
* After reading the highest device id from the IOMMU PCI capability header * After reading the highest device id from the IOMMU PCI capability header
* this function looks if there is a higher device id defined in the ACPI table * this function looks if there is a higher device id defined in the ACPI table
@ -433,11 +419,6 @@ static int __init find_last_devid_from_ivhd(struct ivhd_header *h)
p += sizeof(*h); p += sizeof(*h);
end += h->length; end += h->length;
find_last_devid_on_pci(PCI_BUS_NUM(h->devid),
PCI_SLOT(h->devid),
PCI_FUNC(h->devid),
h->cap_ptr);
while (p < end) { while (p < end) {
dev = (struct ivhd_entry *)p; dev = (struct ivhd_entry *)p;
switch (dev->type) { switch (dev->type) {