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staging: rtl8712: fix wrong function output

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Return NULL from r8712_find_network() if no matched wlan_network
was found. Code with a bug:

while (plist != phead) {
	pnetwork = container_of(plist, struct wlan_network, list);
	plist = plist->next;
	if (!memcmp(addr, pnetwork->network.MacAddress, ETH_ALEN))
		break;
}
spin_unlock_irqrestore(&scanned_queue->lock, irqL);
return pnetwork;

In this code last processed pnetwork returned if list end was reached
and no pnetwork matched test condition.

Signed-off-by: Sergei Krainov <sergei.krainov.lkd@gmail.com>
Link: https://lore.kernel.org/r/20210409124611.GA3981@test-VirtualBox
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sergei Krainov
2021-04-09 14:46:11 +02:00
committed by Greg Kroah-Hartman
parent b3dffce0e0
commit 3f8f36da0c
1 changed files with 2 additions and 0 deletions
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2
drivers/staging/rtl8712/rtl871x_mlme.c
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@@ -146,6 +146,8 @@ static struct wlan_network *r8712_find_network(struct __queue *scanned_queue,
if (!memcmp(addr, pnetwork->network.MacAddress, ETH_ALEN)) if (!memcmp(addr, pnetwork->network.MacAddress, ETH_ALEN))
break; break;
} }
if (plist == phead)
pnetwork = NULL;
spin_unlock_irqrestore(&scanned_queue->lock, irqL); spin_unlock_irqrestore(&scanned_queue->lock, irqL);
return pnetwork; return pnetwork;
} }