From: Stanislaw Gruszka <sgruszka@redhat.com>
Date: Sat, 30 Jul 2011 11:32:56 +0000 (+0200)
Subject: rt2x00: rt2800: fix zeroing skb structure
X-Git-Tag: firefly_0821_release~7541^2~3013
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e10eea625f8c07e5c9ec205cf2c6854d9c536b67;p=firefly-linux-kernel-4.4.55.git

rt2x00: rt2800: fix zeroing skb structure

commit b52398b6e4522176dd125722c72c301015d24520 upstream.

We should clear skb->data not skb itself. Bug was introduced by:
commit 0b8004aa12d13ec750d102ba4082a95f0107c649 "rt2x00: Properly
reserve room for descriptors in skbs".

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index 2a6aa85cc6c9..5a4522860a4c 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -784,8 +784,7 @@ void rt2800_write_beacon(struct queue_entry *entry, struct txentry_desc *txdesc)
 	/*
 	 * Add space for the TXWI in front of the skb.
 	 */
-	skb_push(entry->skb, TXWI_DESC_SIZE);
-	memset(entry->skb, 0, TXWI_DESC_SIZE);
+	memset(skb_push(entry->skb, TXWI_DESC_SIZE), 0, TXWI_DESC_SIZE);
 
 	/*
 	 * Register descriptor details in skb frame descriptor.