Complete() will be run with interrupt enabled, so change to
spin_lock_irqsave().
Cc: Alan Stern <st...@rowland.harvard.edu>
Signed-off-by: Ming Lei <ming....@canonical.com>
---
drivers/usb/core/message.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 82927e1..8bba734 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -266,8 +266,9 @@ static void sg_complete(struct urb *urb)
{
struct usb_sg_request *io = urb->context;
int status = urb->status;
+ unsigned long flags;
- spin_lock(&io->lock);
+ spin_lock_irqsave(&io->lock, flags);
/* In 2.5 we require hcds' endpoint queues not to progress after fault
* reports, until the completion callback (this!) returns. That lets
@@ -326,7 +327,7 @@ static void sg_complete(struct urb *urb)
if (!io->count)
complete(&io->complete);
- spin_unlock(&io->lock);
+ spin_unlock_irqrestore(&io->lock, flags);
}
--
1.7.9.5
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