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Johan Hovold authored
[ Upstream commit 4d5e0689 ] 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: b1353d1c ("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> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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