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| author | Dan Williams <dan.j.williams@intel.com> | 2009-11-19 17:07:10 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-11-19 17:07:10 -0700 |
| commit | 228c4f5cfbf1cda411d9aa7204a612a63c89b1e8 (patch) | |
| tree | 0920f900732ce598fef2cdc0c4899860534e837d /drivers/dma/ioat/hw.h | |
| parent | e22dde9904c2d26a522f1a2b89854a8238bf0933 (diff) | |
| download | linux-228c4f5cfbf1cda411d9aa7204a612a63c89b1e8.tar.bz2 | |
ioat3: dca and raid operations are incompatible
RAID operations cause a system hang on platforms with DCA
(Direct-Cache-Access) enabled. So turn off RAID capabilities in this
case.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma/ioat/hw.h')
| -rw-r--r-- | drivers/dma/ioat/hw.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/dma/ioat/hw.h b/drivers/dma/ioat/hw.h index 99afb12bd409..60e675455b6a 100644 --- a/drivers/dma/ioat/hw.h +++ b/drivers/dma/ioat/hw.h @@ -39,6 +39,8 @@ #define IOAT_VER_3_0 0x30 /* Version 3.0 */ #define IOAT_VER_3_2 0x32 /* Version 3.2 */ +int system_has_dca_enabled(struct pci_dev *pdev); + struct ioat_dma_descriptor { uint32_t size; union { |