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PCI/ASPM: Convert to use sysfs_match_string() helper

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The sysfs_match_string() helper returns index of the matching string in an
array.  Use it in pcie_aspm_set_policy() to simplify the code.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
[bhelgaas: squash sysfs_match_string() fix into original patch for issue
Reported-by: Heiner Kallweit <hkallweit1@gmail.com>]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Andy Shevchenko 2018-08-06 14:30:34 -05:00 committed by Bjorn Helgaas
parent ce397d215c
commit 36131ce9a0
1 changed files with 3 additions and 5 deletions
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8
drivers/pci/pcie/aspm.c
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@ -1127,11 +1127,9 @@ static int pcie_aspm_set_policy(const char *val,
if (aspm_disabled)
return -EPERM;
for (i = 0; i < ARRAY_SIZE(policy_str); i++)
if (!strncmp(val, policy_str[i], strlen(policy_str[i])))
break;
if (i >= ARRAY_SIZE(policy_str))
return -EINVAL;
i = sysfs_match_string(policy_str, val);
if (i < 0)
return i;
if (i == aspm_policy)
return 0;