diff options
| author | Tal Shorer <tal.shorer@gmail.com> | 2016-04-25 22:53:29 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-26 23:50:02 +0200 |
| commit | 607fb0f4d90cc9a4463bcb17c1417d8a709dfda1 (patch) | |
| tree | 8179c4aa0618d839650e8c81a056d5a626179b58 | |
| parent | Linux 4.6-rc5 (diff) | |
| download | linux-607fb0f4d90cc9a4463bcb17c1417d8a709dfda1.tar.xz linux-607fb0f4d90cc9a4463bcb17c1417d8a709dfda1.zip | |
usb: musb: gadget: nuke endpoint before setting its descriptor to NULL
Some functions, such as f_sourcesink, rely on an endpoint's desc
field during their requests' complete() callback, so clear it only
_after_ nuking all requests to avoid NULL pointer dereference.
Signed-off-by: Tal Shorer <tal.shorer@gmail.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/musb/musb_gadget.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index 87bd578799a8..152865b36522 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -1164,12 +1164,12 @@ static int musb_gadget_disable(struct usb_ep *ep) musb_writew(epio, MUSB_RXMAXP, 0); } - musb_ep->desc = NULL; - musb_ep->end_point.desc = NULL; - /* abort all pending DMA and requests */ nuke(musb_ep, -ESHUTDOWN); + musb_ep->desc = NULL; + musb_ep->end_point.desc = NULL; + schedule_work(&musb->irq_work); spin_unlock_irqrestore(&(musb->lock), flags); |