Commits
Mans Rullgard committed ae4c3485fa8
ata: sata_dwc_460ex: skip dma setup for non-dma commands Calling dmaengine_prep_slave_sg() for non-dma ATA commands is unnecessary at best and could be harmful if the dma driver reacts badly to this. It also causes this driver to print a bogus error message in these cases. This patch changes sata_dwc_qc_issue() to only do the dma setup for dma commands and also reports an error to libata if if fails. Tested-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: Mans Rullgard <mans@mansr.com> Signed-off-by: Tejun Heo <tj@kernel.org>