Complete() will be run with interrupt enabled, so change to
spin_lock_irqsave().
Cc: Johan Hovold <jhov...@gmail.com>
Signed-off-by: Ming Lei <ming....@canonical.com>
---
drivers/usb/serial/symbolserial.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/serial/symbolserial.c
b/drivers/usb/serial/symbolserial.c
index 9b16489..b4f5cbe 100644
--- a/drivers/usb/serial/symbolserial.c
+++ b/drivers/usb/serial/symbolserial.c
@@ -41,6 +41,7 @@ static void symbol_int_callback(struct urb *urb)
int status = urb->status;
int result;
int data_length;
+ unsigned long flags;
switch (status) {
case 0:
@@ -81,7 +82,7 @@ static void symbol_int_callback(struct urb *urb)
}
exit:
- spin_lock(&priv->lock);
+ spin_lock_irqsave(&priv->lock, flags);
/* Continue trying to always read if we should */
if (!priv->throttled) {
@@ -92,7 +93,7 @@ exit:
__func__, result);
} else
priv->actually_throttled = true;
- spin_unlock(&priv->lock);
+ spin_unlock_irqrestore(&priv->lock, flags);
}
static int symbol_open(struct tty_struct *tty, struct usb_serial_port *port)
--
1.7.9.5
--
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