diff options
| author |   Andi Kleen <ak@suse.de> | 2006-04-11 12:54:48 +0200 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-04-11 06:38:57 -0700 |
| commit | ecc16ba96fd5b1a1c1988f0a2b05ff954bdff728 (patch) | |
| tree | 57a994d0741ddef2c869db0ef83d3456cc6a13df | |
| parent | [PATCH] i386: Remove bogus special case code from AMD core parsing (diff) | |
| download | linux-dev-ecc16ba96fd5b1a1c1988f0a2b05ff954bdff728.tar.xz linux-dev-ecc16ba96fd5b1a1c1988f0a2b05ff954bdff728.zip | |
[PATCH] i386/x86-64: Remove checks for value == NULL in PCI config space access
Nobody should pass NULL here. Could in theory make it a BUG,
but the NULL pointer oops will do as well.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | arch/i386/pci/direct.c | 6 | ||||
| -rw-r--r-- | arch/i386/pci/mmconfig.c | 2 | ||||
| -rw-r--r-- | arch/x86_64/pci/mmconfig.c | 2 |
3 files changed, 6 insertions, 4 deletions
diff --git a/arch/i386/pci/direct.c b/arch/i386/pci/direct.c index 0659ced01185..5d81fb510375 100644 --- a/arch/i386/pci/direct.c +++ b/arch/i386/pci/direct.c @@ -19,7 +19,7 @@ int pci_conf1_read(unsigned int seg, unsigned int bus, { unsigned long flags; - if (!value || (bus > 255) || (devfn > 255) || (reg > 255)) { + if ((bus > 255) || (devfn > 255) || (reg > 255)) { *value = -1; return -EINVAL; } @@ -94,8 +94,10 @@ static int pci_conf2_read(unsigned int seg, unsigned int bus, unsigned long flags; int dev, fn; - if (!value || (bus > 255) || (devfn > 255) || (reg > 255)) + if ((bus > 255) || (devfn > 255) || (reg > 255)) { + *value = -1; return -EINVAL; + } dev = PCI_SLOT(devfn); fn = PCI_FUNC(devfn); diff --git a/arch/i386/pci/mmconfig.c b/arch/i386/pci/mmconfig.c index f77d7f8b9bf6..6b1ea0c9a570 100644 --- a/arch/i386/pci/mmconfig.c +++ b/arch/i386/pci/mmconfig.c @@ -80,7 +80,7 @@ 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 ((bus > 255) || (devfn > 255) || (reg > 4095)) { *value = -1; return -EINVAL; } diff --git a/arch/x86_64/pci/mmconfig.c b/arch/x86_64/pci/mmconfig.c index b493ed977e7c..1a59a31bb740 100644 --- a/arch/x86_64/pci/mmconfig.c +++ b/arch/x86_64/pci/mmconfig.c @@ -75,7 +75,7 @@ static int pci_mmcfg_read(unsigned int seg, unsigned int bus, char __iomem *addr; /* Why do we have this when nobody checks it. How about a BUG()!? -AK */ - if (unlikely(!value || (bus > 255) || (devfn > 255) || (reg > 4095))) { + if (unlikely((bus > 255) || (devfn > 255) || (reg > 4095))) { *value = -1; return -EINVAL; } |