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Unverified Commit af0e6242 authored by Rasmus Villemoes's avatar Rasmus Villemoes Committed by Mark Brown
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spi: spi-fsl-spi: automatically adapt bits-per-word in cpu mode



Taking one interrupt for every byte is rather slow. Since the
controller is perfectly capable of transmitting 32 bits at a time,
change t->bits_per-word to 32 when the length is divisible by 4 and
large enough that the reduced number of interrupts easily compensates
for the one or two extra fsl_spi_setup_transfer() calls this causes.

Signed-off-by: default avatarRasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent a798a708
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