[patch 23/34] kernel: Convert upper case scpdata to lower case

[Martin Schwidefsky]

From: Hendrik Brueckner <brueckner@xxxxxxxxxxxxxxxxxx>

If the CP SET LOADDEV on the 3215 console has been used to specify
SCPdata, all data is converted to upper case letters.

When scpdata contains upper case letters only, convert all letters
to lower case.

Signed-off-by: Hendrik Brueckner <brueckner@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
---

 arch/s390/kernel/ipl.c |   13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

Index: quilt-2.6/arch/s390/kernel/ipl.c
===================================================================
--- quilt-2.6.orig/arch/s390/kernel/ipl.c
+++ quilt-2.6/arch/s390/kernel/ipl.c
@@ -340,19 +340,28 @@ size_t reipl_append_ascii_scpdata(char *
 {
 	size_t count;
 	size_t i;
+	int has_lowercase;
 
 	count = min(size - 1, scpdata_length(ipb->ipl_info.fcp.scp_data,
 					     ipb->ipl_info.fcp.scp_data_len));
 	if (!count)
 		goto out;
 
-	for (i = 0; i < count; i++)
+	has_lowercase = 0;
+	for (i = 0; i < count; i++) {
 		if (!isascii(ipb->ipl_info.fcp.scp_data[i])) {
 			count = 0;
 			goto out;
 		}
+		if (!has_lowercase && islower(ipb->ipl_info.fcp.scp_data[i]))
+			has_lowercase = 1;
+	}
 
-	memcpy(dest, ipb->ipl_info.fcp.scp_data, count);
+	if (has_lowercase)
+		memcpy(dest, ipb->ipl_info.fcp.scp_data, count);
+	else
+		for (i = 0; i < count; i++)
+			dest[i] = tolower(ipb->ipl_info.fcp.scp_data[i]);
 out:
 	dest[count] = '\0';
 	return count;

-- 
blue skies,
   Martin.

"Reality continues to ruin my life." - Calvin.

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