From: Tejun Heo Date: Sun, 23 Sep 2007 04:19:54 +0000 (+0900) Subject: sata_sil24: implement PMP support X-Git-Tag: v2.6.24-rc1~1391^2~27 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3454dc6922dc550c0d3ccf292c4e227403b10b6e;p=pandora-kernel.git sata_sil24: implement PMP support Implement PMP support. sil24 supports full FIS-switching. However, it has a PMP DMA CS errata which requires port-wide resetting if commands are outstanding to three or more devices when an error occurs on one of them. ATAPI commands often result in CHECK SENSE and it's crucial to not reset them before fetching sense data. Unfortunately, ATAPI CHECK SENSE causes a lot of problem if command is outstanding to any other device usually resulting in port-wide reset. So, sata_sil24 implements sil24_qc_defer() which guarantees ATAPI command is run by itself. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- Reading git-diff-tree failed