usb: gadget: Fix setting self-powered state on suspend

commit c783e1258f29c5caac9eea0aea6b172870f1baf8 upstream.

cdev->config might be NULL, so check it before dereferencing.

CC: stable <stable@kernel.org>
Fixes: 40e89ff5750f ("usb: gadget: Set self-powered based on MaxPower and bmAttributes")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20250220120314.3614330-1-m.szyprowski@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index d934a1f4970dc848fdbba7c69d7dde66cd7b5371..74a343edc52f1b380a436ced14f7664991865c8f 100644 (file)
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -2476,7 +2476,8 @@ void composite_suspend(struct usb_gadget *gadget)
 
        cdev->suspended = 1;
 
-       if (cdev->config->bmAttributes & USB_CONFIG_ATT_SELFPOWER)
+       if (cdev->config &&
+           cdev->config->bmAttributes & USB_CONFIG_ATT_SELFPOWER)
                usb_gadget_set_selfpowered(gadget);
 
        usb_gadget_vbus_draw(gadget, 2);