Messages in this thread Patch in this message | | | Date | Sat, 28 Jul 2012 20:43:57 +0800 | From | Fengguang Wu <> | Subject | [PATCH] 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> --- drivers/tty/serial/pch_uart.c | 4 ++++ 1 file changed, 4 insertions(+)
WARNING: this may be a superficial fix!
--- linux.orig/drivers/tty/serial/pch_uart.c 2012-06-07 05:39:57.550846385 +0800 +++ linux/drivers/tty/serial/pch_uart.c 2012-07-28 20:37:27.803145392 +0800 @@ -974,6 +974,10 @@ static unsigned int dma_handle_tx(struct 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;
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