redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

PM: sleep: wakeup: Skip wakeup_source_sysfs_remove() if device is not there 

commit 87de6594dc upstream.

Skip wakeup_source_sysfs_remove() to fix a NULL pinter dereference via
ws->dev, if the wakeup source is unregistered before registering the
wakeup class from device_add().

Fixes: 2ca3d1ecb8 ("PM / wakeup: Register wakeup class kobj after device is added")
Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>
Cc: 5.4+ <stable@vger.kernel.org> # 5.4+
[ rjw: Subject & changelog, white space ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Neeraj Upadhyay 2020-03-23 10:38:51 +05:30 committed by Greg Kroah-Hartman
parent 4fcbc35fab
commit d941b33bdc
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/base/power/wakeup.c
View File

@ -241,7 +241,9 @@ void wakeup_source_unregister(struct wakeup_source *ws)
{
if (ws) {
wakeup_source_remove(ws);
wakeup_source_sysfs_remove(ws);
if (ws->dev)
wakeup_source_sysfs_remove(ws);
wakeup_source_destroy(ws);
}
}