From c4e6dcfa00dab9b10e75bba835393b81f256310b Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin@ingics.com>
Date: Mon, 16 Feb 2015 22:39:04 +0800
Subject: [PATCH] serial: sprd: Fix missing spin_unlock in sprd_handle_irq()
Fix return from sprd_handle_irq() with spin_lock held.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/serial/sprd_serial.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/sprd_serial.c b/drivers/tty/serial/sprd_serial.c
index 594b63331ef40e..bca975f5093b73 100644
--- 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);
--
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