linux-kernel - [ 013/147] n_gsm: replace kfree_skb w/ appropriate dev

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Message-Id: <20121014143535.537156446@decadent.org.uk>
Date:	Sun, 14 Oct 2012 15:35:46 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Russ Gorby <russ.gorby@...el.com>,
	"Yin, Fengwei" <fengwei.yin@...el.com>,
	Alan Cox <alan@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [ 013/147] n_gsm: replace kfree_skb w/ appropriate dev_* versions

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Russ Gorby <russ.gorby@...el.com>

commit 329e56780e514a7ab607bcb51a52ab0dc2669414 upstream.

Drivers are supposed to use the dev_* versions of the kfree_skb
interfaces. In a couple of cases we were called with IRQs
disabled as well which kfree_skb() does not expect.

Replaced kfree_skb calls w/ dev_kfree_skb and dev_kfree_skb_any

Signed-off-by: Russ Gorby <russ.gorby@...el.com>
Tested-by: Yin, Fengwei <fengwei.yin@...el.com>
Signed-off-by: Alan Cox <alan@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/tty/n_gsm.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 6f4f8d3..a8c82f5 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -879,7 +879,7 @@ static int gsm_dlci_data_output_framed(struct gsm_mux *gsm,
 	if (len > gsm->mtu) {
 		if (dlci->adaption == 3) {
 			/* Over long frame, bin it */
-			kfree_skb(dlci->skb);
+			dev_kfree_skb_any(dlci->skb);
 			dlci->skb = NULL;
 			return 0;
 		}
@@ -905,7 +905,7 @@ static int gsm_dlci_data_output_framed(struct gsm_mux *gsm,
 	skb_pull(dlci->skb, len);
 	__gsm_data_queue(dlci, msg);
 	if (last) {
-		kfree_skb(dlci->skb);
+		dev_kfree_skb_any(dlci->skb);
 		dlci->skb = NULL;
 	}
 	return size;
@@ -1674,7 +1674,7 @@ static void gsm_dlci_free(struct kref *ref)
 	dlci->gsm->dlci[dlci->addr] = NULL;
 	kfifo_free(dlci->fifo);
 	while ((dlci->skb = skb_dequeue(&dlci->skb_list)))
-		kfree_skb(dlci->skb);
+		dev_kfree_skb(dlci->skb);
 	kfree(dlci);
 }
 
@@ -2013,7 +2013,7 @@ void gsm_cleanup_mux(struct gsm_mux *gsm)
 {
 	int i;
 	struct gsm_dlci *dlci = gsm->dlci[0];
-	struct gsm_msg *txq, *utxq;
+	struct gsm_msg *txq, *ntxq;
 	struct gsm_control *gc;
 
 	gsm->dead = 1;


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