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path: root/drivers/s390/block/dasd_diag.c
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Diffstat (limited to 'drivers/s390/block/dasd_diag.c')
-rw-r--r--drivers/s390/block/dasd_diag.c34
1 files changed, 8 insertions, 26 deletions
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c
index 23fa0b28917..9d051e5687e 100644
--- a/drivers/s390/block/dasd_diag.c
+++ b/drivers/s390/block/dasd_diag.c
@@ -63,44 +63,26 @@ static const u8 DASD_DIAG_CMS1[] = { 0xc3, 0xd4, 0xe2, 0xf1 };/* EBCDIC CMS1 */
* and function code cmd.
* In case of an exception return 3. Otherwise return result of bitwise OR of
* resulting condition code and DIAG return code. */
-static __inline__ int
-dia250(void *iob, int cmd)
+static inline int dia250(void *iob, int cmd)
{
+ register unsigned long reg0 asm ("0") = (unsigned long) iob;
typedef union {
struct dasd_diag_init_io init_io;
struct dasd_diag_rw_io rw_io;
} addr_type;
int rc;
- __asm__ __volatile__(
-#ifdef CONFIG_64BIT
- " lghi %0,3\n"
- " lgr 0,%3\n"
- " diag 0,%2,0x250\n"
- "0: ipm %0\n"
- " srl %0,28\n"
- " or %0,1\n"
- "1:\n"
- ".section __ex_table,\"a\"\n"
- " .align 8\n"
- " .quad 0b,1b\n"
- ".previous\n"
-#else
- " lhi %0,3\n"
- " lr 0,%3\n"
+ rc = 3;
+ asm volatile(
" diag 0,%2,0x250\n"
"0: ipm %0\n"
" srl %0,28\n"
" or %0,1\n"
"1:\n"
- ".section __ex_table,\"a\"\n"
- " .align 4\n"
- " .long 0b,1b\n"
- ".previous\n"
-#endif
- : "=&d" (rc), "=m" (*(addr_type *) iob)
- : "d" (cmd), "d" (iob), "m" (*(addr_type *) iob)
- : "0", "1", "cc");
+ EX_TABLE(0b,1b)
+ : "+d" (rc), "=m" (*(addr_type *) iob)
+ : "d" (cmd), "d" (reg0), "m" (*(addr_type *) iob)
+ : "1", "cc");
return rc;
}