Re: [S390] cio: fix stsch_reset.
- From: Chuck Ebbert <76306.1226@xxxxxxxxxxxxxx>
- Date: Sun, 31 Dec 2006 01:31:43 -0500
In-Reply-To: <20061228103925.GB6270@skybase>
On Thu, 28 Dec 2006 11:39:25 +0100, Martin Schwidefsky wrote:
@@ -881,10 +880,18 @@ static void cio_reset_pgm_check_handler(
static int stsch_reset(struct subchannel_id schid, volatile struct schib *addr)
{
int rc;
+ register struct subchannel_id reg1 asm ("1") = schid;
pgm_check_occured = 0;
s390_reset_pgm_handler = cio_reset_pgm_check_handler;
- rc = stsch(schid, addr);
+
+ asm volatile(
+ " stsch 0(%2)\n"
+ " ipm %0\n"
+ " srl %0,28"
+ : "=d" (rc)
+ : "d" (reg1), "a" (addr), "m" (*addr) : "memory", "cc");
+
s390_reset_pgm_handler = NULL;
if (pgm_check_occured)
return -EIO;
Can't you just put a barrier() before the stsch() call?
--
MBTI: IXTP
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