| commit | 4fdef698383db07d829da567e0e405fc41ff3a89 | |
| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | |
| Wed, 8 Jun 2016 07:32:49 +0000 (8 16:32 +0900) | ||
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | |
| Wed, 29 Jun 2016 08:14:33 +0000 (29 11:14 +0300) | ||
| tree | 71ab6bc0dde6d51479bd0df3284fdc5054184f6c | treesnapshot (tar.gz zip) |
| parent | 44963d649da63ce8ed8f41b8a267c745ca1ec0b0 | commitdiff |
usb: renesas_usbhs: fix NULL pointer dereference in xfer_work()
This patch fixes an issue that the xfer_work() is possible to cause
NULL pointer dereference if the usb cable is disconnected while data
transfer is running.
In such case, a gadget driver may call usb_ep_disable()) before
xfer_work() is actually called. In this case, the usbhs_pkt_pop()
will call usbhsf_fifo_unselect(), and then usbhs_pipe_to_fifo()
in xfer_work() will return NULL.
Fixes: e73a989 ("usb: renesas_usbhs: add DMAEngine support")
Cc: <stable@vger.kernel.org> # v3.1+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This patch fixes an issue that the xfer_work() is possible to cause
NULL pointer dereference if the usb cable is disconnected while data
transfer is running.
In such case, a gadget driver may call usb_ep_disable()) before
xfer_work() is actually called. In this case, the usbhs_pkt_pop()
will call usbhsf_fifo_unselect(), and then usbhs_pipe_to_fifo()
in xfer_work() will return NULL.
Fixes: e73a989 ("usb: renesas_usbhs: add DMAEngine support")
Cc: <stable@vger.kernel.org> # v3.1+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
| drivers/usb/renesas_usbhs/fifo.c | diffblobblamehistory |