[PATCH v1] PCI/ASPM: Convert to use match_string() helper

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The new helper returns index of the matching string in an array.
We are going to use it here.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
 drivers/pci/pcie/aspm.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index c687c817b47d..0e88b3ad065f 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -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 = match_string(policy_str, ARRAY_SIZE(policy_str), val);
+	if (i < 0)
+		return i;
 	if (i == aspm_policy)
 		return 0;
 
-- 
2.17.0




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