lkml.org 
[lkml]   [2012]   [Aug]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH 2/6] drivers/cpufreq/pcc-cpufreq.c: fix error return code
Date
On Sunday, August 05, 2012, Julia Lawall wrote:
> From: Julia Lawall <julia@diku.dk>
>
> Convert a 0 error return code to a negative one, as returned elsewhere in the
> function.
>
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
>
> // <smpl>
> @@
> identifier ret;
> expression e,e1,e2,e3,e4,x;
> @@
>
> (
> if (\(ret != 0\|ret < 0\) || ...) { ... return ...; }
> |
> ret = 0
> )
> ... when != ret = e1
> *x = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\|ioremap\|ioremap_nocache\|devm_ioremap\|devm_ioremap_nocache\)(...);
> ... when != x = e2
> when != ret = e3
> *if (x == NULL || ...)
> {
> ... when != ret = e4
> * return ret;
> }
> // </smpl>
>
> Signed-off-by: Julia Lawall <julia@diku.dk>

Applied to the linux-next branch of the linux-pm.git tree. I'm going to
push it as a fix for v3.6.

Thanks,
Rafael


> ---
> drivers/cpufreq/pcc-cpufreq.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/cpufreq/pcc-cpufreq.c b/drivers/cpufreq/pcc-cpufreq.c
> index cdc02ac..503996a 100644
> --- a/drivers/cpufreq/pcc-cpufreq.c
> +++ b/drivers/cpufreq/pcc-cpufreq.c
> @@ -454,6 +454,7 @@ static int __init pcc_cpufreq_probe(void)
> mem_resource->address_length);
> if (pcch_virt_addr == NULL) {
> pr_debug("probe: could not map shared mem region\n");
> + ret = -ENOMEM;
> goto out_free;
> }
> pcch_hdr = pcch_virt_addr;
>
>
>



\
 
 \ /
  Last update: 2012-08-05 23:21    [W:0.236 / U:0.028 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site