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usb: fix improper return value when kzalloc fails 

The comment says function wa_nep_queue() should return 0 if ok, and <0
errno code on error. However, its implementation always returns 0, even
if the call to kzalloc() fails. As a result, the return value may be
inconsistent with the execution status, which may mislead the callers.
This patch fixes the bug, returning -ENOMEM when the call to kzalloc()
fails.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pan Bian 2016-11-29 20:56:10 +08:00 committed by Greg Kroah-Hartman
parent cd63a1c195
commit 7faf44bf92
1 changed files with 1 additions and 0 deletions
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drivers/usb/wusbcore/wa-nep.c
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@ -198,6 +198,7 @@ static int wa_nep_queue(struct wahc *wa, size_t size)
if (nw == NULL) {
if (printk_ratelimit())
dev_err(dev, "No memory to queue notification\n");
result = -ENOMEM;
goto out;
}
INIT_WORK(&nw->work, wa_notif_dispatch);