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| author | Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> | 2010-01-29 11:27:31 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-02-09 04:50:51 -0800 |
| commit | 3492bbb3afd5fd9fa873015691004797371ec373 (patch) | |
| tree | 7198a42e6b22844ab8039eca380eb10c42138d87 /arch/x86/include | |
| parent | cf135e5571317539a44bf3022f4f2c14a64edaa1 (diff) | |
| download | lwn-3492bbb3afd5fd9fa873015691004797371ec373.tar.gz lwn-3492bbb3afd5fd9fa873015691004797371ec373.zip | |
x86: Disable HPET MSI on ATI SB700/SB800
commit 73472a46b5b28116b145fb5fc05242c1aa8e1461 upstream
HPET MSI on platforms with ATI SB700/SB800 as they seem to have some
side-effects on floppy DMA. Do not use HPET MSI on such platforms.
Original problem report from Mark Hounschell
http://lkml.indiana.edu/hypermail/linux/kernel/0912.2/01118.html
Tested-by: Mark Hounschell <markh@compro.net>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: <stable@kernel.org>
LKML-Reference: <20100121190952.GA32523@linux-os.sc.intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/hpet.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/hpet.h b/arch/x86/include/asm/hpet.h index 1c22cb05ad6a..3251e2316a7a 100644 --- a/arch/x86/include/asm/hpet.h +++ b/arch/x86/include/asm/hpet.h @@ -66,6 +66,7 @@ extern unsigned long hpet_address; extern unsigned long force_hpet_address; extern int hpet_force_user; +extern u8 hpet_msi_disable; extern int is_hpet_enabled(void); extern int hpet_enable(void); extern void hpet_disable(void); |