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

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commit c526c62d565ea5a5bba9433f28756079734f430d upstream.

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>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Chen 2016-07-01 15:33:28 +08:00 committed by prashantpaddune
parent febb81a3a7
commit 9f78c97cd5
1 changed files with 2 additions and 0 deletions
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2
drivers/usb/gadget/composite.c
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@ -1947,6 +1947,8 @@ 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))