From 393c092a4d3ace7b8cef633ede2171104dd504d7 Mon Sep 17 00:00:00 2001
From: Joerg Roedel <jroedel@suse.de>
Date: Tue, 20 Oct 2015 17:33:45 +0200
Subject: [PATCH] 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>
---
drivers/iommu/amd_iommu_init.c | 19 -------------------
1 file changed, 19 deletions(-)
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index 71734f7bc248..dd92a8d8f0ca 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -407,20 +407,6 @@ static inline int ivhd_entry_length(u8 *ivhd)
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
* 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);
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) {
dev = (struct ivhd_entry *)p;
switch (dev->type) {