lkml.org 
[lkml]   [2006]   [Dec]   [31]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateSun, 31 Dec 2006 01:31:43 -0500
FromChuck Ebbert <>
SubjectRe: [S390] cio: fix stsch_reset.
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

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-12-31 07:41    [from the cache]
©2003-2008