tree 04d8f8adbdd1f976d3d42250b12fe4eeff1deebf
parent afd7fd81f22bf90474216515dbd6088f9bd70343
author Stephen Warren <swarren@nvidia.com> 1502915410 -0600
committer Felipe Balbi <felipe.balbi@linux.intel.com> 1503048530 +0300

usb: gadget: serial: fix oops when data rx'd after close

When the gadget serial device has no associated TTY, do not pass any
received data into the TTY layer for processing; simply drop it instead.
This prevents the TTY layer from calling back into the gadget serial
driver, which will then crash in e.g. gs_write_room() due to lack of
gadget serial device to TTY association (i.e. a NULL pointer dereference).

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>