Sparse reports a warning at _unlock_and_check_sysrq() warning: context imbalance in uart_unlock_and_check_sysrq() - unexpected unlock The root cause is the missing annotation at _unlock_and_check_sysrq() Add the missing __releases(&port->lock) annotation. Signed-off-by: Jules Irenge <jbi.octave@xxxxxxxxx> --- drivers/tty/serial/serial_core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 76e506ee335c..32f93f03efce 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -3121,6 +3121,7 @@ int uart_prepare_sysrq_char(struct uart_port *port, unsigned int ch) EXPORT_SYMBOL_GPL(uart_prepare_sysrq_char); void uart_unlock_and_check_sysrq(struct uart_port *port, unsigned long irqflags) + __releases(&port->lock) { int sysrq_ch; -- 2.24.1