diff options
| author |   Andi Kleen <ak@suse.de> | 2006-04-07 19:50:15 +0200 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-04-09 11:53:52 -0700 |
| commit | 49c93e84d8b2d602a07c302c7e3cd4fa09095fbb (patch) | |
| tree | a59d0bb7a9f1df9f3187e466e3937ea9ffd83343 /arch/i386 | |
| parent | [PATCH] i386/x86_64: Check if MCFG works for the first 16 busses (diff) | |
| download | linux-dev-49c93e84d8b2d602a07c302c7e3cd4fa09095fbb.tar.xz linux-dev-49c93e84d8b2d602a07c302c7e3cd4fa09095fbb.zip | |
[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')
| -rw-r--r-- | arch/i386/pci/direct.c | 4 | ||||
| -rw-r--r-- | arch/i386/pci/mmconfig.c | 4 |
2 files changed, 6 insertions, 2 deletions
diff --git a/arch/i386/pci/direct.c b/arch/i386/pci/direct.c index 4457cf3eb401..0659ced01185 100644 --- a/arch/i386/pci/direct.c +++ b/arch/i386/pci/direct.c @@ -19,8 +19,10 @@ int pci_conf1_read(unsigned int seg, unsigned int bus, { unsigned long flags; - if (!value || (bus > 255) || (devfn > 255) || (reg > 255)) + if (!value || (bus > 255) || (devfn > 255) || (reg > 255)) { + *value = -1; return -EINVAL; + } spin_lock_irqsave(&pci_config_lock, flags); diff --git a/arch/i386/pci/mmconfig.c b/arch/i386/pci/mmconfig.c index 2002c741a383..f77d7f8b9bf6 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) |