diff options
| author | Johan Hovold <jhovold@gmail.com> | 2014-05-26 19:23:15 +0200 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2014-07-02 12:06:18 +0200 |
| commit | 097280999c085494a3e7c441fa1251e4c67ee927 (patch) | |
| tree | 44dcbde5fe9d8ebcf697e1cf4e51de186e5c0d70 /Kconfig | |
| parent | 8cba48efceae500f796be3174ae69034d08257ef (diff) | |
USB: usb_wwan: fix write and suspend race
commit 170fad9e22df0063eba0701adb966786d7a4ec5a upstream.
Fix race between write() and suspend() which could lead to writes being
dropped (or I/O while suspended) if the device is runtime suspended
while a write request is being processed.
Specifically, suspend() releases the susp_lock after determining the
device is idle but before setting the suspended flag, thus leaving a
window where a concurrent write() can submit an urb.
Fixes: 383cedc3bb43 ("USB: serial: full autosuspend support for the
option driver")
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'Kconfig')
0 files changed, 0 insertions, 0 deletions