Hi Andy, On 2018/5/22 6:16, Andy Shevchenko wrote: > On Wed, May 16, 2018 at 12:15 PM, Yisheng Xie <xieyishe...@huawei.com> wrote: >> The helper returns index of the matching string in an array, >> use it to simpler the code. > > IIRC I sent the patch with the same semantics week or so ago against this > file.
Right, I get it. Sorry about that. Thanks Yisheng > >> >> Signed-off-by: Yisheng Xie <xieyishe...@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 >> > > >