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intel_th: pti: Use sysfs_match_string() helper

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Use sysfs_match_string() helper instead of open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
This commit is contained in:
Andy Shevchenko 2018-05-04 22:19:25 +03:00 committed by Alexander Shishkin
parent ba828cc9dc
commit 1d2ef028bf
1 changed files with 7 additions and 9 deletions
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16
drivers/hwtracing/intel_th/pti.c
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@ -272,19 +272,17 @@ static ssize_t lpp_dest_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t size)
{
struct pti_device *pti = dev_get_drvdata(dev);
ssize_t ret = -EINVAL;
int i;
for (i = 0; i < ARRAY_SIZE(lpp_dest_str); i++)
if (sysfs_streq(buf, lpp_dest_str[i]))
break;
i = sysfs_match_string(lpp_dest_str, buf);
if (i < 0)
return i;
if (i < ARRAY_SIZE(lpp_dest_str) && pti->lpp_dest_mask & BIT(i)) {
pti->lpp_dest = i;
ret = size;
}
if (!(pti->lpp_dest_mask & BIT(i)))
return -EINVAL;
return ret;
pti->lpp_dest = i;
return size;
}
static DEVICE_ATTR_RW(lpp_dest);