]> git.baikalelectronics.ru Git - kernel.git/commit
spi: spi-fsl-dspi: Exit the ISR with IRQ_NONE when it's not ours
authorVladimir Oltean <olteanv@gmail.com>
Thu, 22 Aug 2019 21:15:11 +0000 (00:15 +0300)
committerMark Brown <broonie@kernel.org>
Fri, 23 Aug 2019 11:01:14 +0000 (12:01 +0100)
commit6dfe6926124212925e3364861006a4328282b4ee
tree504259a54e91e94c8bb05b909b72782dfd5f87ac
parent809272c91bba6f54dd9a36120080c69bce6b2687
spi: spi-fsl-dspi: Exit the ISR with IRQ_NONE when it's not ours

The DSPI interrupt can be shared between two controllers at least on the
LX2160A. In that case, the driver for one controller might misbehave and
consume the other's interrupt. Fix this by actually checking if any of
the bits in the status register have been asserted.

Fixes: ccd64643fff4 ("spi: spi-fsl-dspi: use IRQF_SHARED mode to request IRQ")
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20190822211514.19288-3-olteanv@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
drivers/spi/spi-fsl-dspi.c