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authorDarrick J. Wong <djwong@us.ibm.com>2006-11-10 19:59:24 -0500
committerJames Bottomley <jejb@mulgrave.localdomain>2007-07-18 12:14:47 -0400
commitba330ffebb43c37cabc765c7cb0a80df01554657 (patch)
treed703cb707917d1ce5daf0224b3d10b51c8825415 /drivers/Kconfig
parent338ec57003ff9d7bc1471677e61872455977a5de (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>
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