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authorMark Lord <liml@rtr.ca>2009-04-13 11:29:34 -0400
committerJeff Garzik <jgarzik@redhat.com>2009-04-17 19:04:28 -0400
commit299b3f8df90a3f7416d8df121d8a42b1a2aeced4 (patch)
tree600bd461c66e9980c3dc3554148fb594e5805f5f /drivers/video/pm2fb.c
parent8d2b450d0f9233f221d545f26720eebbc468e857 (diff)
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sata_mv: workaround for multi_count errata sata24
Workaround for errata SATA#24 in sata_mv. This errata affects WRITE_MULTI* commands when the device multi_count produces a DRQ block size >= 4Kbytes. We work around it here by converting such operations into ordinary PIO_WRITEs instead. Note that this might result in a PIO FUA write unavoidably being converted into a non-FUA write. In practice, any system using FUA is also going to be using DMA rather than PIO, so this shouldn't affect anyone in the real world. Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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