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| author | Andreas Herrmann <andreas.herrmann3@amd.com> | 2010-05-17 18:43:24 +0200 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2010-05-17 10:04:43 -0700 |
| commit | fec84e330719c20d2146c8dbdc9ff50b3a1d7039 (patch) | |
| tree | 0d12887db371a334dbeef3250e0f645a4af643a1 /arch | |
| parent | 30a564be9d9554c168a654eddc2165869cc0d7bf (diff) | |
| download | blackbird-op-linux-fec84e330719c20d2146c8dbdc9ff50b3a1d7039.tar.gz blackbird-op-linux-fec84e330719c20d2146c8dbdc9ff50b3a1d7039.zip | |
x86, hpet: Add reference to chipset erratum documentation for disable-hpet-msi-quirk
(At the moment the "SB700 Family Product Errata" document is available
at http://support.amd.com/us/Embedded_TechDocs/46837.pdf)
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
LKML-Reference: <20100517164324.GB10254@alberich.amd.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/quirks.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/quirks.c b/arch/x86/kernel/quirks.c index cd2c336c8d09..e72d3fc6547d 100644 --- a/arch/x86/kernel/quirks.c +++ b/arch/x86/kernel/quirks.c @@ -495,6 +495,9 @@ void force_hpet_resume(void) /* * HPET MSI on some boards (ATI SB700/SB800) has side effect on * floppy DMA. Disable HPET MSI on such platforms. + * See erratum #27 (Misinterpreted MSI Requests May Result in + * Corrupted LPC DMA Data) in AMD Publication #46837, + * "SB700 Family Product Errata", Rev. 1.0, March 2010. * * Also force the read back of the CMP register in hpet_next_event() * to work around the problem that the CMP register write seems to be |
