cdev->config is checked for null pointer at above code, so cdev->config
might be null, fix it by adding null pointer check.

Signed-off-by: Peter Chen <peter.c...@nxp.com>
---
 drivers/usb/gadget/composite.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index eb64848..a8ecc7a 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -1913,6 +1913,8 @@ unknown:
                        break;
 
                case USB_RECIP_ENDPOINT:
+                       if (!cdev->config)
+                               break;
                        endp = ((w_index & 0x80) >> 3) | (w_index & 0x0f);
                        list_for_each_entry(f, &cdev->config->functions, list) {
                                if (test_bit(endp, f->endpoints))
-- 
1.9.1

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