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| author | Darrick J. Wong <djwong@us.ibm.com> | 2006-11-10 19:59:24 -0500 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.localdomain> | 2007-07-18 12:14:47 -0400 |
| commit | ba330ffebb43c37cabc765c7cb0a80df01554657 (patch) | |
| tree | d703cb707917d1ce5daf0224b3d10b51c8825415 /README | |
| parent | 338ec57003ff9d7bc1471677e61872455977a5de (diff) | |
[SCSI] aic94xx: Don't call pci_map_sg for already-mapped scatterlists
It turns out that libata has already dma_map_sg'd the scatterlist
entries that go with an ata_queued_cmd by the time it calls
sas_ata_qc_issue. sas_ata_qc_issue passes this scatterlist to aic94xx.
Unfortunately, aic94xx assumes that any scatterlist passed to it needs
to be pci_map_sg'd... which blows away the mapping that libata created!
This causes (on a x260) Calgary IOMMU table leaks and duplicate frees
when aic94xx and libata try to {pci,dma}_unmap_sg the scatterlist.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Key this check off ATA_PROTOCOL_STP
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'README')
0 files changed, 0 insertions, 0 deletions