Complete() will be run with interrupt enabled, so change to
spin_lock_irqsave().
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxxxxx>
---
drivers/usb/misc/usbtest.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index 8b4ca1c..5c73df5 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -804,11 +804,12 @@ static void ctrl_complete(struct urb *urb)
struct usb_ctrlrequest *reqp;
struct subcase *subcase;
int status = urb->status;
+ unsigned long flags;
reqp = (struct usb_ctrlrequest *)urb->setup_packet;
subcase = container_of(reqp, struct subcase, setup);
- spin_lock(&ctx->lock);
+ spin_lock_irqsave(&ctx->lock, flags);
ctx->count--;
ctx->pending--;
@@ -907,7 +908,7 @@ error:
/* signal completion when nothing's queued */
if (ctx->pending == 0)
complete(&ctx->complete);
- spin_unlock(&ctx->lock);
+ spin_unlock_irqrestore(&ctx->lock, flags);
}
static int
@@ -1552,8 +1553,9 @@ struct iso_context {
static void iso_callback(struct urb *urb)
{
struct iso_context *ctx = urb->context;
+ unsigned long flags;
- spin_lock(&ctx->lock);
+ spin_lock_irqsave(&ctx->lock, flags);
ctx->count--;
ctx->packet_count += urb->number_of_packets;
@@ -1593,7 +1595,7 @@ static void iso_callback(struct urb *urb)
complete(&ctx->done);
}
done:
- spin_unlock(&ctx->lock);
+ spin_unlock_irqrestore(&ctx->lock, flags);
}
static struct urb *iso_alloc_urb(
--
1.7.9.5
--
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