usb: wusbcore: fix panic in wusbhc_chid_set
If no valid CHID value has previously been set on an HWA, writing a
value of all zeros will cause a kernel panic in uwb_radio_stop because
wusbhc->uwb_rc has not been set. This patch skips the call to
uwb_radio_stop if wusbhc->uwb_rc has not been initialized.
Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/wusbcore/mmc.c b/drivers/usb/wusbcore/mmc.c
index 4474126..3f485df 100644
--- a/drivers/usb/wusbcore/mmc.c
+++ b/drivers/usb/wusbcore/mmc.c
@@ -301,7 +301,7 @@
if (chid)
result = uwb_radio_start(&wusbhc->pal);
- else
+ else if (wusbhc->uwb_rc)
uwb_radio_stop(&wusbhc->pal);
return result;
