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Subject[PATCH] intel_th: pti: Convert to use sysfs_match_string() helper
Date
The helper returns index of the matching string in an array,
use it to simpler the code.

Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
---
drivers/hwtracing/intel_th/pti.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/drivers/hwtracing/intel_th/pti.c b/drivers/hwtracing/intel_th/pti.c
index 5669433..75cb368 100644
--- a/drivers/hwtracing/intel_th/pti.c
+++ b/drivers/hwtracing/intel_th/pti.c
@@ -272,15 +272,12 @@ 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;
+ ssize_t ret;

- for (i = 0; i < ARRAY_SIZE(lpp_dest_str); i++)
- if (sysfs_streq(buf, lpp_dest_str[i]))
- break;
+ ret = sysfs_match_string(lpp_dest_str, buf);

- if (i < ARRAY_SIZE(lpp_dest_str) && pti->lpp_dest_mask & BIT(i)) {
- pti->lpp_dest = i;
+ if (ret >= 0 && pti->lpp_dest_mask & BIT(ret)) {
+ pti->lpp_dest = ret;
ret = size;
}

--
1.7.12.4
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