[S390] cmm, smsgiucv_app: convert sender to uppercase

The sender kernel parameter contains a z/VM user ID where
alphabetic characters must be specified in uppercase.

Allow users to specify lowercase characters and convert the
sender string to uppercase at module initialization.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/s390/net/smsgiucv_app.c b/drivers/s390/net/smsgiucv_app.c
index 137688790207..4d2ea4000422 100644
--- a/drivers/s390/net/smsgiucv_app.c
+++ b/drivers/s390/net/smsgiucv_app.c
@@ -180,6 +180,13 @@ static int __init smsgiucv_app_init(void)
                 goto fail_put_driver;
         }
 
+        /* convert sender to uppercase characters */
+        if (sender) {
+                int len = strlen(sender);
+                while (len--)
+                        sender[len] = toupper(sender[len]);
+        }
+
         /* register with the smsgiucv device driver */
         rc = smsg_register_callback(SMSG_PREFIX, smsg_app_callback);
         if (rc) {