[media] rc: winbond-cir: fix potential double free in wbcir_probe()
Since rc_unregister_device() frees its argument, the subsequently
call to rc_free_device() on the same variable will cause a double
free bug. Fix by set argument to NULL, thus when fall through to
rc_free_device(), nothing will be done there.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/rc/winbond-cir.c b/drivers/media/rc/winbond-cir.c
index 535a18d..87af2d3 100644
--- a/drivers/media/rc/winbond-cir.c
+++ b/drivers/media/rc/winbond-cir.c
@@ -1151,6 +1151,7 @@
release_region(data->wbase, WAKEUP_IOMEM_LEN);
exit_unregister_device:
rc_unregister_device(data->dev);
+ data->dev = NULL;
exit_free_rc:
rc_free_device(data->dev);
exit_unregister_led: