s390/qdio: fill SL with absolute addresses

As the comment says, sl->sbal holds an absolute address. qeth currently
solves this through wild casting, while zfcp doesn't care.

Handle this properly in the code that actually builds the SL.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Reviewed-by: Steffen Maier <maier@linux.ibm.com> [for qdio]
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h
index 71e3f01..7870cf8 100644
--- a/arch/s390/include/asm/qdio.h
+++ b/arch/s390/include/asm/qdio.h
@@ -227,7 +227,7 @@ struct qdio_buffer {
  * @sbal: absolute SBAL address
  */
 struct sl_element {
-	unsigned long sbal;
+	u64 sbal;
 } __attribute__ ((packed));
 
 /**