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mISDN: use kstrdup() in dsp_pipeline_build 

Use kstrdup instead of strlen-kmalloc-strcpy. Remove unneeded NULL
test, it will be tested inside kstrdup. Remove 0 length string test,
it has been tested in the caller of dsp_pipeline_build.

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Geliang Tang 2015-10-12 01:19:07 -07:00 committed by David S. Miller
parent 4bdc3d6614
commit c3643885aa
1 changed files with 2 additions and 10 deletions
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12
drivers/isdn/mISDN/dsp_pipeline.c
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@ -235,7 +235,7 @@ void dsp_pipeline_destroy(struct dsp_pipeline *pipeline)
int dsp_pipeline_build(struct dsp_pipeline *pipeline, const char *cfg)
{
int len, incomplete = 0, found = 0;
int incomplete = 0, found = 0;
char *dup, *tok, *name, *args;
struct dsp_element_entry *entry, *n;
struct dsp_pipeline_entry *pipeline_entry;
@ -247,17 +247,9 @@ int dsp_pipeline_build(struct dsp_pipeline *pipeline, const char *cfg)
if (!list_empty(&pipeline->list))
_dsp_pipeline_destroy(pipeline);
if (!cfg)
return 0;
len = strlen(cfg);
if (!len)
return 0;
dup = kmalloc(len + 1, GFP_ATOMIC);
dup = kstrdup(cfg, GFP_ATOMIC);
if (!dup)
return 0;
strcpy(dup, cfg);
while ((tok = strsep(&dup, "|"))) {
if (!strlen(tok))
continue;