forge/linux-uconsole
1
0
Fork 0
Code Issues 1 Pull requests Projects Releases Packages Wiki Activity Actions

media: iguanair: fix endpoint sanity check

Browse source 
[ Upstream commit 1b257870a7 ]

Make sure to use the current alternate setting, which need not be the
first one by index, when verifying the endpoint descriptors and
initialising the URBs.

Failing to do so could cause the driver to misbehave or trigger a WARN()
in usb_submit_urb() that kernels with panic_on_warn set would choke on.

Fixes: 26ff63137c ("[media] Add support for the IguanaWorks USB IR Transceiver")
Fixes: ab1cbdf159 ("media: iguanair: add sanity checks")
Cc: stable <stable@vger.kernel.org>     # 3.6
Cc: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Johan Hovold 2020-01-03 17:35:13 +01:00 • committed by Greg Kroah-Hartman
commit df3eb85b47
1 changed files with 1 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
drivers/media/rc/iguanair.c
View file

@ -424,7 +424,7 @@ static int iguanair_probe(struct usb_interface *intf,
int ret, pipein, pipeout;
struct usb_host_interface *idesc;
idesc = intf->altsetting;
idesc = intf->cur_altsetting;
if (idesc->desc.bNumEndpoints < 2)
return -ENODEV;