xtensa: ISS: avoid simple_strtoul usage

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>

1 files changed, 11 insertions, 11 deletions

diff --git a/arch/xtensa/platforms/iss/network.c b/arch/xtensa/platforms/iss/network.c
index 3aff4302f938..7f84b5c68123 100644
--- a/arch/xtensa/platforms/iss/network.c
+++ b/arch/xtensa/platforms/iss/network.c
@@ -612,22 +612,22 @@ static int __init iss_net_setup(char *str)
         struct iss_net_init *new;
         struct list_head *ele;
         char *end;
-        int n;
+        int rc;
+        unsigned n;
 
-        n = simple_strtoul(str, &end, 0);
-        if (end == str) {
-                printk(ERR "Failed to parse '%s'\n", str);
+        end = strchr(str, '=');
+        if (!end) {
+                printk(ERR "Expected '=' after device number\n");
                 return 1;
         }
-        if (n < 0) {
-                printk(ERR "Device %d is negative\n", n);
+        *end = 0;
+        rc = kstrtouint(str, 0, &n);
+        *end = '=';
+        if (rc < 0) {
+                printk(ERR "Failed to parse '%s'\n", str);
                 return 1;
         }
         str = end;
-        if (*str != '=') {
-                printk(ERR "Expected '=' after device number\n");
-                return 1;
-        }
 
         spin_lock(&devices_lock);
 
@@ -640,7 +640,7 @@ static int __init iss_net_setup(char *str)
         spin_unlock(&devices_lock);
 
         if (device && device->index == n) {
-                printk(ERR "Device %d already configured\n", n);
+                printk(ERR "Device %u already configured\n", n);
                 return 1;
         }