diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/serial_core.c | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 752655c80f73..38ef6afddce8 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -3187,22 +3187,19 @@ 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) +void uart_unlock_and_check_sysrq(struct uart_port *port, unsigned long flags) +__releases(&port->lock) { - int sysrq_ch; + if (port->has_sysrq) { + int sysrq_ch = port->sysrq_ch; - if (!port->has_sysrq) { - spin_unlock_irqrestore(&port->lock, irqflags); - return; + port->sysrq_ch = 0; + spin_unlock_irqrestore(&port->lock, flags); + if (sysrq_ch) + handle_sysrq(sysrq_ch); + } else { + spin_unlock_irqrestore(&port->lock, flags); } - - sysrq_ch = port->sysrq_ch; - port->sysrq_ch = 0; - - spin_unlock_irqrestore(&port->lock, irqflags); - - if (sysrq_ch) - handle_sysrq(sysrq_ch); } EXPORT_SYMBOL_GPL(uart_unlock_and_check_sysrq); |