[PATCH v1] intel_th: pti: Use sysfs_match_string() helper
From: Andy Shevchenko
Date: Fri May 04 2018 - 15:19:35 EST
Use sysfs_match_string() helper instead of open coded variant.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/hwtracing/intel_th/pti.c | 16 +++++++---------
1 file changed, 7 insertions(+), 9 deletions(-)
diff --git a/drivers/hwtracing/intel_th/pti.c b/drivers/hwtracing/intel_th/pti.c
index 56694339cb06..0da6b787f553 100644
--- a/drivers/hwtracing/intel_th/pti.c
+++ b/drivers/hwtracing/intel_th/pti.c
@@ -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);
--
2.17.0