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Staging: speakup: Remove print following unsuccessful kmalloc

Browse source 
Remove print statement following unsuccessful kmalloc when there
is not enough memory. Kmalloc and variants normally produce a
backtrace in such a case. Hence, a print statement is not necessary.

Found using the following Coccinelle semantic patch:

@@
identifier i;
@@

i = (\(kmalloc\|devm_kzalloc\|kmalloc_array\|
devm_ioremap\|usb_alloc_urb\|alloc_netdev\|dev_alloc_skb\|
kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|
   kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...));
(
if (i == NULL)
{
-\(DBG_8723A\|printk\|pr_err\|CERROR\|DBG_88E\)(...);
...when any
}
|
if (!i)
{
-\(DBG_8723A\|printk\|pr_err\|CERROR\|DBG_88E\)(...);
...when any
}
)

@@
identifier i;
@@
(
- if (i == NULL) {
+ if (i == NULL)
       return ...;
- }
|
- if (!i) {
+ if (!i)
       return ...;
- }
)

Signed-off-by: Meghana Madhyastha <[email protected]>
Acked-by: Julia Lawall <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Meghana Madhyastha 2017-09-16 10:34:05 +05:30 • committed by Greg Kroah-Hartman
commit 08710da3cf
1 changed files with 1 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

4
drivers/staging/speakup/spk_ttyio.c
View file

@ -51,10 +51,8 @@ static int spk_ttyio_ldisc_open(struct tty_struct *tty)
speakup_tty = tty;
ldisc_data = kmalloc(sizeof(struct spk_ldisc_data), GFP_KERNEL);
if (!ldisc_data) {
pr_err("speakup: Failed to allocate ldisc_data.\n");
if (!ldisc_data)
return -ENOMEM;
}
sema_init(&ldisc_data->sem, 0);
ldisc_data->buf_free = true;