lkml.org 
[lkml]   [2020]   [Sep]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 01/14] pch_uart: drop double zeroing
Date
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.Lawall@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;
\
 
 \ /
  Last update: 2020-09-20 14:09    [W:0.282 / U:0.132 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site