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If we are writing data to the card, there is no point in walking the scatterlist to find out if there are any unaligned entries; this is a needless waste of CPU cycles. Avoid this by checking for a non-read tranfer first. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>