diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-30 15:00:39 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-30 15:00:39 +0100 |
| commit | 7ab004dbcbee38b8a70798835d3ffcd97a985a5e (patch) | |
| tree | 0caa6cb97801736046823ca785a5ba36bf684ac6 /drivers/usb/core/urb.c | |
| parent | 710f8af199ee9d72dd87083edd55c5ee250ee6f4 (diff) | |
| parent | 26291c54e111ff6ba87a164d85d4a4e134b7315c (diff) | |
Merge tag 'v5.17-rc2' into char-misc-next
We need the char/misc fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core/urb.c')
| -rw-r--r-- | drivers/usb/core/urb.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index 30727729a44cc..33d62d7e3929f 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -715,6 +715,12 @@ void usb_kill_urb(struct urb *urb) if (!(urb && urb->dev && urb->ep)) return; atomic_inc(&urb->reject); + /* + * Order the write of urb->reject above before the read + * of urb->use_count below. Pairs with the barriers in + * __usb_hcd_giveback_urb() and usb_hcd_submit_urb(). + */ + smp_mb__after_atomic(); usb_hcd_unlink_urb(urb, -ENOENT); wait_event(usb_kill_urb_queue, atomic_read(&urb->use_count) == 0); @@ -756,6 +762,12 @@ void usb_poison_urb(struct urb *urb) if (!urb) return; atomic_inc(&urb->reject); + /* + * Order the write of urb->reject above before the read + * of urb->use_count below. Pairs with the barriers in + * __usb_hcd_giveback_urb() and usb_hcd_submit_urb(). + */ + smp_mb__after_atomic(); if (!urb->dev || !urb->ep) return; |