From: Thomas Meyer <thomas@m3y3r.de>
Date: Fri, 2 Dec 2011 12:36:13 +0000 (+0000)
Subject: sfc: Use kcalloc instead of kzalloc to allocate array
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c2e4e25afcc8ae1835a6100089f1f9fd3a362430;p=linux-beck.git

sfc: Use kcalloc instead of kzalloc to allocate array

The advantage of kcalloc is, that will prevent integer overflows which could
result from the multiplication of number of elements and size and it is also
a bit nicer to read.

The semantic patch that makes this change is available
in https://lkml.org/lkml/2011/11/25/107

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/sfc/rx.c b/drivers/net/ethernet/sfc/rx.c
index 752d521c09b1..955b14956deb 100644
--- a/drivers/net/ethernet/sfc/rx.c
+++ b/drivers/net/ethernet/sfc/rx.c
@@ -669,7 +669,7 @@ int efx_probe_rx_queue(struct efx_rx_queue *rx_queue)
 		  rx_queue->ptr_mask);
 
 	/* Allocate RX buffers */
-	rx_queue->buffer = kzalloc(entries * sizeof(*rx_queue->buffer),
+	rx_queue->buffer = kcalloc(entries, sizeof(*rx_queue->buffer),
 				   GFP_KERNEL);
 	if (!rx_queue->buffer)
 		return -ENOMEM;
diff --git a/drivers/net/ethernet/sfc/selftest.c b/drivers/net/ethernet/sfc/selftest.c
index 822f6c2a6a7c..52edd24fcde3 100644
--- a/drivers/net/ethernet/sfc/selftest.c
+++ b/drivers/net/ethernet/sfc/selftest.c
@@ -503,8 +503,8 @@ efx_test_loopback(struct efx_tx_queue *tx_queue,
 		/* Determine how many packets to send */
 		state->packet_count = efx->txq_entries / 3;
 		state->packet_count = min(1 << (i << 2), state->packet_count);
-		state->skbs = kzalloc(sizeof(state->skbs[0]) *
-				      state->packet_count, GFP_KERNEL);
+		state->skbs = kcalloc(state->packet_count,
+				      sizeof(state->skbs[0]), GFP_KERNEL);
 		if (!state->skbs)
 			return -ENOMEM;
 		state->flush = false;
diff --git a/drivers/net/ethernet/sfc/tx.c b/drivers/net/ethernet/sfc/tx.c
index e0e00b3d6a82..72f0fbc73b1a 100644
--- a/drivers/net/ethernet/sfc/tx.c
+++ b/drivers/net/ethernet/sfc/tx.c
@@ -479,7 +479,7 @@ int efx_probe_tx_queue(struct efx_tx_queue *tx_queue)
 		  tx_queue->queue, efx->txq_entries, tx_queue->ptr_mask);
 
 	/* Allocate software ring */
-	tx_queue->buffer = kzalloc(entries * sizeof(*tx_queue->buffer),
+	tx_queue->buffer = kcalloc(entries, sizeof(*tx_queue->buffer),
 				   GFP_KERNEL);
 	if (!tx_queue->buffer)
 		return -ENOMEM;