[PATCH v2 3/4] s390x: sclp: fix error handling for oversize control blocks

[Claudio Imbrenda <imbrenda@linux.ibm.com>]

From: Janosch Frank <frankja@linux.ibm.com>

Requests over 4k are not a spec exception.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Jason J. Herne <jjherne@linux.ibm.com>
---
 hw/s390x/sclp.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c
index 73244c9..abb6e50 100644
--- a/hw/s390x/sclp.c
+++ b/hw/s390x/sclp.c
@@ -213,8 +213,7 @@ int sclp_service_call(CPUS390XState *env, uint64_t sccb, uint32_t code)
     cpu_physical_memory_read(sccb, &work_sccb, sccb_len);
 
     /* Valid sccb sizes */
-    if (be16_to_cpu(work_sccb.h.length) < sizeof(SCCBHeader) ||
-        be16_to_cpu(work_sccb.h.length) > SCCB_SIZE) {
+    if (be16_to_cpu(work_sccb.h.length) < sizeof(SCCBHeader)) {
         r = -PGM_SPECIFICATION;
         goto out;
     }
-- 
2.7.4