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authorIlkka Koskinen <ilkka.koskinen@nokia.com>2010-10-19 17:07:31 +0300
committerGrant Likely <grant.likely@secretlab.ca>2010-10-20 10:43:24 -0600
commit2764c500be0c1f057349ee6c81557239de060f87 (patch)
treec2d377ef63c95c824ba9c3415c3cbecdeb4cbe57 /fs
parente1993ed6420afd4421336d75e73641f75da87a7f (diff)
spi/omap2_mcspi: Verify TX reg is empty after TX only xfer with DMA
In case of TX only with DMA, the driver assumes that the data has been transferred once DMA callback in invoked. However, SPI's shift register may still contain data. Thus, the driver is supposed to verify that the register is empty and the end of the SPI transfer has been reached. Signed-off-by: Ilkka Koskinen <ilkka.koskinen@nokia.com> Tested-by: Tuomas Katila <ext-tuomas.2.katila@nokia.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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