[PATCH v2 1/1] infiniband: hf1: Use string_upper() instead of open coded variant

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

Use string_upper() from string helper module instead of open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
v2: fixed compilation error (Jason)
 drivers/infiniband/hw/hfi1/efivar.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/infiniband/hw/hfi1/efivar.c b/drivers/infiniband/hw/hfi1/efivar.c
index f275dd1abed8..e8ed05516bf2 100644
--- a/drivers/infiniband/hw/hfi1/efivar.c
+++ b/drivers/infiniband/hw/hfi1/efivar.c
@@ -3,7 +3,9 @@
  * Copyright(c) 2015, 2016 Intel Corporation.
  */
 
-#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/string_helpers.h>
+
 #include "efivar.h"
 
 /* GUID for HFI1 variables in EFI */
@@ -112,7 +114,6 @@ int read_hfi1_efi_var(struct hfi1_devdata *dd, const char *kind,
 	char prefix_name[64];
 	char name[64];
 	int result;
-	int i;
 
 	/* create a common prefix */
 	snprintf(prefix_name, sizeof(prefix_name), "%04x:%02x:%02x.%x",
@@ -128,10 +129,7 @@ int read_hfi1_efi_var(struct hfi1_devdata *dd, const char *kind,
 	 * variable.
 	 */
 	if (result) {
-		/* Converting to uppercase */
-		for (i = 0; prefix_name[i]; i++)
-			if (isalpha(prefix_name[i]))
-				prefix_name[i] = toupper(prefix_name[i]);
+		string_upper(prefix_name, prefix_name);
 		snprintf(name, sizeof(name), "%s-%s", prefix_name, kind);
 		result = read_efi_var(name, size, return_data);
 	}
-- 
2.33.0