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serial: sprd: Fix missing spin_unlock in sprd_handle_irq()
[firefly-linux-kernel-4.4.55.git]
/
drivers
/
tty
/
serial
/
sprd_serial.c
diff --git
a/drivers/tty/serial/sprd_serial.c
b/drivers/tty/serial/sprd_serial.c
index 594b63331ef40e42fa75a87cde1c139a46014398..bca975f5093b73fd5ebf3e0f4ec8c42e97dfea35 100644
(file)
--- a/
drivers/tty/serial/sprd_serial.c
+++ b/
drivers/tty/serial/sprd_serial.c
@@
-293,8
+293,10
@@
static irqreturn_t sprd_handle_irq(int irq, void *dev_id)
ims = serial_in(port, SPRD_IMSR);
- if (!ims)
+ if (!ims) {
+ spin_unlock(&port->lock);
return IRQ_NONE;
+ }
serial_out(port, SPRD_ICLR, ~0);