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authorAndi Kleen <ak@suse.de>2006-04-07 19:50:15 +0200
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-09 11:53:52 -0700
commit49c93e84d8b2d602a07c302c7e3cd4fa09095fbb (patch)
treea59d0bb7a9f1df9f3187e466e3937ea9ffd83343 /arch/i386/pci/mmconfig.c
parent8c30b1a74aed4041f183e183a149b7dfbdc6c20e (diff)
downloadop-kernel-dev-49c93e84d8b2d602a07c302c7e3cd4fa09095fbb.zip
op-kernel-dev-49c93e84d8b2d602a07c302c7e3cd4fa09095fbb.tar.gz
[PATCH] i386/x86-64: Return defined error value for bad PCI config space accesses
Mostly to get better handling when a extended config space access has to fallback to Type1. Cc: gregkh@suse.de Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/pci/mmconfig.c')
-rw-r--r--arch/i386/pci/mmconfig.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/i386/pci/mmconfig.c b/arch/i386/pci/mmconfig.c
index 2002c74..f77d7f8 100644
--- a/arch/i386/pci/mmconfig.c
+++ b/arch/i386/pci/mmconfig.c
@@ -80,8 +80,10 @@ static int pci_mmcfg_read(unsigned int seg, unsigned int bus,
unsigned long flags;
u32 base;
- if (!value || (bus > 255) || (devfn > 255) || (reg > 4095))
+ if (!value || (bus > 255) || (devfn > 255) || (reg > 4095)) {
+ *value = -1;
return -EINVAL;
+ }
base = get_base_addr(seg, bus, devfn);
if (!base)
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