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(parent: 2bd6bf0) | patch
spi: spi-axi: fix potential use-after-free after deregistration
authorJohan Hovold <johan@kernel.org>
Mon, 30 Oct 2017 10:35:27 +0000 (11:35 +0100)
committerMark Brown <broonie@kernel.org>
Tue, 31 Oct 2017 11:15:10 +0000 (11:15 +0000)
commit4d5e0689dc9d5640ad46cdfbe1896b74d8df1661
tree56d826c088398ce60c2b610284348e4df0cc5a66tree
parent2bd6bf03f4c1c59381d62c61d03f6cc3fe71f66ecommit | diff
spi: spi-axi: fix potential use-after-free after deregistration

Take an extra reference to the controller before deregistering it to
prevent use-after-free in the interrupt handler in case an interrupt
fires before the line is disabled.

Fixes: b1353d1c1d45 ("spi: Add Analog Devices AXI SPI Engine controller support")
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
drivers/spi/spi-axi-spi-engine.c diff | blob | history
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