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usb: gadget: composite: fix dereference after null check coverify warning 

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.chen@nxp.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Peter Chen 2016-07-01 15:33:28 +08:00 committed by Felipe Balbi
parent 700aa7ff8d
commit c526c62d56
1 changed files with 2 additions and 0 deletions
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2
drivers/usb/gadget/composite.c
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@ -1913,6 +1913,8 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
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))