diff options
author | Zhang Bo <zbsdta@126.com> | 2018-02-05 14:56:21 -0800 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-18 11:17:49 +0100 |
commit | 9bab71eb3fdea290835f5babc743f4914a631d51 (patch) | |
tree | 818018ed476279a18abdd5d3262b729de5c4e2a1 /drivers/block | |
parent | 175b57ba7da2d2b722b4d3bad67232be5f069d08 (diff) |
Input: matrix_keypad - fix race when disabling interrupts
commit ea4f7bd2aca9f68470e9aac0fc9432fd180b1fe7 upstream.
If matrix_keypad_stop() is executing and the keypad interrupt is triggered,
disable_row_irqs() may be called by both matrix_keypad_interrupt() and
matrix_keypad_stop() at the same time, causing interrupts to be disabled
twice and the keypad being "stuck" after resuming.
Take lock when setting keypad->stopped to ensure that ISR will not race
with matrix_keypad_stop() disabling interrupts.
Signed-off-by: Zhang Bo <zbsdta@126.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/block')
0 files changed, 0 insertions, 0 deletions