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author | Jarkko Nikula <jarkko.nikula@linux.intel.com> | 2019-08-15 16:52:11 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-21 07:18:40 +0200 |
commit | 1ffda54f0546c7931891b9e44a6dcf000bf0831d (patch) | |
tree | 974f5cfc4fac29555955561eba3b000b5eedaae7 /arch | |
parent | 0910434c455df15ff8c1eca024cd4146472eda08 (diff) | |
download | linux-stable-1ffda54f0546c7931891b9e44a6dcf000bf0831d.tar.gz linux-stable-1ffda54f0546c7931891b9e44a6dcf000bf0831d.tar.bz2 linux-stable-1ffda54f0546c7931891b9e44a6dcf000bf0831d.zip |
i2c: designware: Synchronize IRQs when unregistering slave client
[ Upstream commit c486dcd2f1bbdd524a1e0149734b79e4ae329650 ]
Make sure interrupt handler i2c_dw_irq_handler_slave() has finished
before clearing the the dev->slave pointer in i2c_dw_unreg_slave().
There is possibility for a race if i2c_dw_irq_handler_slave() is running
on another CPU while clearing the dev->slave pointer.
Reported-by: Krzysztof Adamski <krzysztof.adamski@nokia.com>
Reported-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions