Messages in this thread | | | Date | Sun, 31 Dec 2006 01:31:43 -0500 | From | Chuck Ebbert <> | Subject | Re: [S390] cio: fix stsch_reset. |
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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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