usb: chipidea: usbmisc: fix a potential race condition
This fixes a potential race condition where the ci13xxx_imx glue code
could be fast enough to call one of the usbmisc_ops before he got a
valid value on the static usbmisc pointer. To fix that we first set
usbmisc, then call usbmisc_set_ops().
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c
index fd4d339..d77e712 100644
--- a/drivers/usb/chipidea/usbmisc_imx.c
+++ b/drivers/usb/chipidea/usbmisc_imx.c
@@ -116,14 +116,14 @@
return ret;
}
+ usbmisc = data;
ret = usbmisc_set_ops(&imx6q_usbmisc_ops);
if (ret) {
+ usbmisc = NULL;
clk_disable_unprepare(data->clk);
return ret;
}
- usbmisc = data;
-
return 0;
}