IB/hf1: Use string_upper() instead of an open coded variant

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

Link: https://lore.kernel.org/r/20211001123153.67379-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

diff --git a/drivers/infiniband/hw/hfi1/efivar.c b/drivers/infiniband/hw/hfi1/efivar.c
index f275dd1..e8ed055 100644 (file)
--- 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);
        }