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USB: mos7840: fix race in register handling
authorJohan Hovold <jhovold@gmail.com>
Fri, 26 Jul 2013 09:55:17 +0000 (11:55 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 14 Apr 2014 13:44:26 +0000 (06:44 -0700)
commita6d2de9c1ea7cbac8944de86f1d5d8f7cd0415eb
tree4fb1930b79f234219c62afc95543fd4a29d42e0etree | snapshot
parent6ff428d609c9840354d12e51961e965ec087a04ecommit | diff
USB: mos7840: fix race in register handling

commit d8a083cc746664916d9d36ed9e4d08a29525f245 upstream.

Fix race in mos7840_get_reg which unconditionally manipulated the
control urb (which may already be in use) by adding a control-urb busy
flag.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/serial/mos7840.c diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git