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serial: sprd: Fix missing spin_unlock in sprd_handle_irq()

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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>
This commit is contained in:
Axel Lin 2015-02-16 22:39:04 +08:00 committed by Greg Kroah-Hartman
parent 30a22c215a
commit c4e6dcfa00
1 changed files with 3 additions and 1 deletions
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4
drivers/tty/serial/sprd_serial.c
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@ -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);