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/devio.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 737e3c1..826289c 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -495,8 +495,9 @@ static void async_completed(struct urb *urb)
u32 secid = 0;
const struct cred *cred = NULL;
int signr;
+ unsigned long flags;
- spin_lock(&ps->lock);
+ spin_lock_irqsave(&ps->lock, flags);
list_move_tail(&as->asynclist, &ps->async_completed);
as->status = urb->status;
signr = as->signr;
@@ -518,7 +519,7 @@ static void async_completed(struct urb *urb)
if (as->status < 0 && as->bulk_addr && as->status != -ECONNRESET &&
as->status != -ENOENT)
cancel_bulk_urbs(ps, as->bulk_addr);
- spin_unlock(&ps->lock);
+ spin_unlock_irqrestore(&ps->lock, flags);
if (signr) {
kill_pid_info_as_cred(sinfo.si_signo, &sinfo, pid, cred, secid);
--
1.7.9.5
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