spi: spi-fsl-dspi: Exit the ISR with IRQ_NONE when it's not ours

Browse source

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: 13aed23927 ("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>

...

This commit is contained in:

Vladimir Oltean 2019-08-23 00:15:11 +03:00 • committed by Mark Brown

parent 12fb61a973

commit 37b4100180

No known key found for this signature in database

GPG key ID: 24D68B725D5487D0

1 changed files with 1 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

drivers/spi/spi-fsl-dspi.c

View file