sg_init_table zeroes its first argument, so the allocation of that argument doesn't have to.
the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x,n,flags; @@ x = - kcalloc + kmalloc_array (n,sizeof(struct scatterlist),flags) ... sg_init_table(x,n) // </smpl> Signed-off-by: Julia Lawall <julia.law...@inria.fr> --- drivers/tty/serial/pch_uart.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -u -p a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -981,7 +981,7 @@ static unsigned int dma_handle_tx(struct priv->tx_dma_use = 1; - priv->sg_tx_p = kcalloc(num, sizeof(struct scatterlist), GFP_ATOMIC); + priv->sg_tx_p = kmalloc_array(num, sizeof(struct scatterlist), GFP_ATOMIC); if (!priv->sg_tx_p) { dev_err(priv->port.dev, "%s:kzalloc Failed\n", __func__); return 0;
