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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>
This commit is contained in:
Thomas Meyer 2011-12-02 12:36:13 +00:00 committed by David S. Miller
parent ddf98e6d30
commit c2e4e25afc
3 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/sfc/rx.c
View File

@ -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;

4
drivers/net/ethernet/sfc/selftest.c
View File

@ -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;

2
drivers/net/ethernet/sfc/tx.c
View File

@ -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;