[S390] memory detection.

The wrong base register is used to read a value from the sclp data
structure. The value is used to calculate the memory size.
Use correct register %r4.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S
index 2d3b089bfb83..8f38bfd642cf 100644
--- a/arch/s390/kernel/head31.S
+++ b/arch/s390/kernel/head31.S
@@ -87,7 +87,7 @@ startup:basr	%r13,0			 # get base
         ic      %r3,.Lscpa1-PARMAREA(%r4)
         chi     %r3,0x00
         jne     .Lcompmem
-        l       %r3,.Lscpa2-PARMAREA(%r13)
+        l       %r3,.Lscpa2-PARMAREA(%r4)
 .Lcompmem:
         mr      %r2,%r1                 # mem in MB on 128-bit
         l       %r1,.Lonemb-.LPG1(%r13)