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commit9a6dc64451upstream. set_bit() and clear_bit() take the bit number so this code is really doing "1 << (1 << irq)" which is a double shift bug. It's done consistently so it won't cause a problem unless "irq" is more than 4. Fixes:70c6cce040('mfd: Support 88pm80x in 80x driver') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>