[PATCH 4.9 20/86] Input: matrix_keypad - fix race when disabling interrupts

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Zhang Bo commit ea4f7bd2aca9f68470e9aac0fc9432fd180b1fe7 upstream. If matrix_keypad_stop() is executing and the keypad interrupt is triggered, disable_row_irqs() may be called

[PATCH 4.9 20/86] Input: matrix_keypad - fix race when disabling interrupts

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Zhang Bo commit ea4f7bd2aca9f68470e9aac0fc9432fd180b1fe7 upstream. If matrix_keypad_stop() is executing and the keypad interrupt is triggered, disable_row_irqs() may be called by both