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parisc: pdc_stable.c: Cleaning up unnecessary use of memset in conjunction with strncpy 

Using memset before strncpy just to ensure a trailing null character is
an unnecessary double writing of a string

Patch modified by Helge Deller to additionally reduce stack usage.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Rickard Strandqvist 2014-09-14 18:02:12 +02:00 committed by Helge Deller
parent fe5c873459
commit 94c457deff
1 changed files with 3 additions and 2 deletions
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5
drivers/parisc/pdc_stable.c
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@ -755,7 +755,7 @@ static ssize_t pdcs_auto_write(struct kobject *kobj,
{ {
struct pdcspath_entry *pathentry; struct pdcspath_entry *pathentry;
unsigned char flags; unsigned char flags;
char in[count+1], *temp; char in[8], *temp;
char c; char c;
if (!capable(CAP_SYS_ADMIN)) if (!capable(CAP_SYS_ADMIN))
@ -765,8 +765,9 @@ static ssize_t pdcs_auto_write(struct kobject *kobj,
return -EINVAL; return -EINVAL;
/* We'll use a local copy of buf */ /* We'll use a local copy of buf */
memset(in, 0, count+1); count = min_t(size_t, count, 7);
strncpy(in, buf, count); strncpy(in, buf, count);
in[count] = '\0';
/* Current flags are stored in primary boot path entry */ /* Current flags are stored in primary boot path entry */
pathentry = &pdcspath_entry_primary; pathentry = &pdcspath_entry_primary;