libsas: fix NCQ mixing with non-NCQ
commit f0ad30d3 upstream. Some cards (like mvsas) have issue troubles if non-NCQ commands are mixed with NCQ ones. Fix this by using the libata default NCQ check routine which waits until all NCQ commands are complete before issuing a non-NCQ one. The impact to cards (like aic94xx) which don't need this logic should be minimal Signed-off-by:James Bottomley <James.Bottomley@suse.de> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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