From: Christof Schmitt <christof.schmitt@de.ibm.com>
To: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: linux-scsi@vger.kernel.org, linux-s390@vger.kernel.org,
schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com,
Swen Schillig <swen@vnet.ibm.com>,
Christof Schmitt <christof.schmitt@de.ibm.com>
Subject: [patch 12/13] zfcp: wait on SCSI work to be finished before proceeding with init dev
Date: Wed, 01 Oct 2008 12:42:25 +0200 [thread overview]
Message-ID: <20081001104805.918759000@de.ibm.com> (raw)
In-Reply-To: 20081001104213.585200000@de.ibm.com
[-- Attachment #1: zfcp_wait_on_initial_lun_avail.diff --]
[-- Type: text/plain, Size: 1433 bytes --]
From: Swen Schillig <swen@vnet.ibm.com>
Due to the character of a scheduled work we cannot guarantee the
LUN register to be finished before an initial device tries to use it.
Therefor we have to wait for PENDING_SCSI_WORK flag to be cleared
before proceeding.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
---
drivers/s390/scsi/zfcp_aux.c | 5 +++++
drivers/s390/scsi/zfcp_erp.c | 1 +
2 files changed, 6 insertions(+)
--- a/drivers/s390/scsi/zfcp_aux.c 2008-09-30 13:52:06.000000000 +0200
+++ b/drivers/s390/scsi/zfcp_aux.c 2008-09-30 13:52:38.000000000 +0200
@@ -129,7 +129,12 @@ static void __init zfcp_init_device_conf
goto out_unit;
up(&zfcp_data.config_sema);
ccw_device_set_online(adapter->ccw_device);
+
zfcp_erp_wait(adapter);
+ wait_event(adapter->erp_done_wqh,
+ !(atomic_read(&unit->status) &
+ ZFCP_STATUS_UNIT_SCSI_WORK_PENDING));
+
down(&zfcp_data.config_sema);
zfcp_unit_put(unit);
out_unit:
--- a/drivers/s390/scsi/zfcp_erp.c 2008-09-30 13:52:30.000000000 +0200
+++ b/drivers/s390/scsi/zfcp_erp.c 2008-09-30 13:52:38.000000000 +0200
@@ -1189,6 +1189,7 @@ static void zfcp_erp_scsi_scan(struct wo
scsilun_to_int((struct scsi_lun *)&unit->fcp_lun), 0);
atomic_clear_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status);
zfcp_unit_put(unit);
+ wake_up(&unit->port->adapter->erp_done_wqh);
kfree(p);
}
--
next prev parent reply other threads:[~2008-10-01 10:42 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-01 10:42 [patch 00/13] zfcp updates for 2.6.28 Christof Schmitt
2008-10-01 10:42 ` [patch 01/13] zfcp: add queue_full sysfs attribute Christof Schmitt
2008-10-01 10:42 ` [patch 02/13] zfcp: Update message with input from review Christof Schmitt
2008-10-01 10:42 ` [patch 03/13] zfcp: remove unused references, declarations and flags Christof Schmitt
2008-10-01 10:42 ` [patch 04/13] zfcp: attach and release SAN nameserver port on demand Christof Schmitt
2008-10-01 10:42 ` [patch 05/13] zfcp: remove all typedefs and replace them with standards Christof Schmitt
2008-10-01 10:42 ` [patch 06/13] zfcp: Simplify get_adapter_by_busid Christof Schmitt
2008-10-01 10:42 ` [patch 07/13] zfcp: Simplify zfcp data structures Christof Schmitt
2008-10-01 10:42 ` [patch 08/13] zfcp: put threshold data in hba trace Christof Schmitt
2008-10-01 10:42 ` [patch 09/13] zfcp: deadlock via shared work queue tasks Christof Schmitt
2008-10-01 10:42 ` [patch 10/13] zfcp: prevent fc_remote_port_delete calls for unregistered rport Christof Schmitt
2008-10-01 10:42 ` [patch 11/13] zfcp: fix erp list usage without using locks Christof Schmitt
2008-10-01 10:42 ` Christof Schmitt [this message]
2008-10-01 10:42 ` [patch 13/13] zfcp: fix double dbf id usage Christof Schmitt
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20081001104805.918759000@de.ibm.com \
--to=christof.schmitt@de.ibm.com \
--cc=James.Bottomley@HansenPartnership.com \
--cc=heiko.carstens@de.ibm.com \
--cc=linux-s390@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=schwidefsky@de.ibm.com \
--cc=swen@vnet.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.