From: Peter Oberparleiter Date: Wed, 19 Feb 2014 16:43:04 +0000 (+0100) Subject: s390/cio: Fix missing subchannels after CHPID configure on X-Git-Tag: v3.14-rc5~27^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9955e8d15f53e53540aaed7bcef640142e65e900;p=platform%2Fkernel%2Flinux-exynos.git s390/cio: Fix missing subchannels after CHPID configure on Performing a Channel-Path configure on operation on a Channel-Path ID (CHPID) does not trigger a scan for subchannels that might have become available through that CHPID. As a result, some subchannels and associated I/O devices might be missing. Fix this by adding the missing scan. This problem was introduced by commit c820de39, "[S390] cio: Rework css driver.", but wasn't noticed earlier because the machine usually also generates a Channel-Report-Word when the first CHPID of a subchannel is configured on, resulting in a separate scan for that subchannel. The problem only becomes apparent when this first CHPID is not working properly and additional working CHPIDs are subsequently configured on without any effect on the availability of the affected subchannel. Reviewed-by: Sebastian Ott Signed-off-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky --- diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index f6b9188..9f0ea6c 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -610,6 +610,7 @@ void chsc_chp_online(struct chp_id chpid) css_wait_for_slow_path(); for_each_subchannel_staged(__s390_process_res_acc, NULL, &link); + css_schedule_reprobe(); } }