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pch_uart: check kzalloc result in dma_handle_tx()

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Reported by coccinelle:

drivers/tty/serial/pch_uart.c:979:1-14: alloc with no test, possible model on line 994

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Fengguang Wu 2012-07-28 20:43:57 +08:00 committed by Greg Kroah-Hartman
parent 221ca778d6
commit a92098a1cb
1 changed files with 4 additions and 0 deletions
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4
drivers/tty/serial/pch_uart.c
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@ -979,6 +979,10 @@ static unsigned int dma_handle_tx(struct eg20t_port *priv)
priv->tx_dma_use = 1;
priv->sg_tx_p = kzalloc(sizeof(struct scatterlist)*num, GFP_ATOMIC);
if (!priv->sg_tx_p) {
dev_err(priv->port.dev, "%s:kzalloc Failed\n", __func__);
return 0;
}
sg_init_table(priv->sg_tx_p, num); /* Initialize SG table */
sg = priv->sg_tx_p;