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(parent: 2035772) | patch
usb: gadget: function: phonet: balance usb_ep_disable calls
authorFelipe Balbi <balbi@ti.com>
Mon, 2 Feb 2015 22:24:17 +0000 (16:24 -0600)
committerFelipe Balbi <balbi@ti.com>
Mon, 23 Feb 2015 06:18:52 +0000 (00:18 -0600)
commit9ec36f7fe20ef919cc15171e1da1b6739222541a
tree808aa58e84cbe0f90379b2bcc73d2ea9e0296b8ftree | snapshot (tar.gz zip)
parent2035772010db634ec8566b658fb1cd87ec47ac77commit | diff
usb: gadget: function: phonet: balance usb_ep_disable calls

f_phonet's ->set_alt() method will call usb_ep_disable()
potentially on an endpoint which is already disabled. That's
something the gadget/function driver must guarantee that it's
always balanced.

In order to balance the calls, just make sure the endpoint
was enabled before by means of checking the validity of
driver_data.

Reported-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
drivers/usb/gadget/function/f_phonet.c diff | blob | blame | history