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| author | David S. Miller <davem@davemloft.net> | 2008-03-17 23:44:31 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-03-17 23:44:31 -0700 |
| commit | 2f633928cbba8a5858bb39b11e7219a41b0fbef5 (patch) | |
| tree | 9a82f4b7f2c3afe4b0208d8e44ea61bae90a7d22 /arch/x86/pci/pcbios.c | |
| parent | 5e226e4d9016daee170699f8a4188a5505021756 (diff) | |
| parent | bde4f8fa8db2abd5ac9c542d76012d0fedab050f (diff) | |
| download | talos-op-linux-2f633928cbba8a5858bb39b11e7219a41b0fbef5.tar.gz talos-op-linux-2f633928cbba8a5858bb39b11e7219a41b0fbef5.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/x86/pci/pcbios.c')
| -rw-r--r-- | arch/x86/pci/pcbios.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/pci/pcbios.c b/arch/x86/pci/pcbios.c index 10ac8c316c46..2f7109ac4c15 100644 --- a/arch/x86/pci/pcbios.c +++ b/arch/x86/pci/pcbios.c @@ -198,6 +198,11 @@ static int pci_bios_read(unsigned int seg, unsigned int bus, "b" (bx), "D" ((long)reg), "S" (&pci_indirect)); + /* + * Zero-extend the result beyond 8 bits, do not trust the + * BIOS having done it: + */ + *value &= 0xff; break; case 2: __asm__("lcall *(%%esi); cld\n\t" @@ -210,6 +215,11 @@ static int pci_bios_read(unsigned int seg, unsigned int bus, "b" (bx), "D" ((long)reg), "S" (&pci_indirect)); + /* + * Zero-extend the result beyond 16 bits, do not trust the + * BIOS having done it: + */ + *value &= 0xffff; break; case 4: __asm__("lcall *(%%esi); cld\n\t" |
