diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/imx.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 3f69356937ef..7d5a8dfa3e91 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -918,14 +918,8 @@ static irqreturn_t imx_uart_int(int irq, void *dev_id) struct imx_port *sport = dev_id; unsigned int usr1, usr2, ucr1, ucr2, ucr3, ucr4; irqreturn_t ret = IRQ_NONE; - unsigned long flags = 0; - /* - * IRQs might not be disabled upon entering this interrupt handler, - * e.g. when interrupt handlers are forced to be threaded. To support - * this scenario as well, disable IRQs when acquiring the spinlock. - */ - spin_lock_irqsave(&sport->port.lock, flags); + spin_lock(&sport->port.lock); usr1 = imx_uart_readl(sport, USR1); usr2 = imx_uart_readl(sport, USR2); @@ -995,7 +989,7 @@ static irqreturn_t imx_uart_int(int irq, void *dev_id) ret = IRQ_HANDLED; } - spin_unlock_irqrestore(&sport->port.lock, flags); + spin_unlock(&sport->port.lock); return ret; } |