Revert "serial: omap: Fix IRQ handling return value"

This reverts commit 908fd7e566b4c12e36e4487d2d5946de5e5ea30f.

Kevin writes:
	Greg, without a better justification in the changelog, I think
	this patch should be dropped from tty-next.

Reported-by: Kevin Hilman <khilman@linaro.org>
Cc: Ruchika Kharwar <ruchika@ti.com>
Cc: 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 2fa7b5ce2e0cf3966f046dc61e3818a46c014823..b0f46e666e1a02601731f74692ac64883b01db8a 100644 (file)
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -538,6 +538,7 @@ static irqreturn_t serial_omap_irq(int irq, void *dev_id)
        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);
@@ -548,6 +549,7 @@ static irqreturn_t serial_omap_irq(int irq, void *dev_id)
                if (iir & UART_IIR_NO_INT)
                        break;
 
+               ret = IRQ_HANDLED;
                lsr = serial_in(up, UART_LSR);
 
                /* extract IRQ type from IIR register */
@@ -586,7 +588,7 @@ static irqreturn_t serial_omap_irq(int irq, void *dev_id)
        pm_runtime_put_autosuspend(up->dev);
        up->port_activity = jiffies;
 
-       return IRQ_HANDLED;
+       return ret;
 }
 
 static unsigned int serial_omap_tx_empty(struct uart_port *port)