serial: omap: Fix IRQ handling return value
Ensure the Interrupt handling routine return IRQ_HANDLED vs
IRQ_NONE.
Signed-off-by: Ruchika Kharwar <ruchika@ti.com>
Signed-off-by: Alexander Savchenko <oleksandr.savchenko@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 72bb690..b080214 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -485,7 +485,6 @@
struct uart_omap_port *up = dev_id;
unsigned int iir, lsr;
unsigned int type;
- irqreturn_t ret = IRQ_NONE;
int max_count = 256;
spin_lock(&up->port.lock);
@@ -496,7 +495,6 @@
if (iir & UART_IIR_NO_INT)
break;
- ret = IRQ_HANDLED;
lsr = serial_in(up, UART_LSR);
/* extract IRQ type from IIR register */
@@ -535,7 +533,7 @@
pm_runtime_put_autosuspend(up->dev);
up->port_activity = jiffies;
- return ret;
+ return IRQ_HANDLED;
}
static unsigned int serial_omap_tx_empty(struct uart_port *port)