linux-scsi.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Hannes Reinecke <hare@suse.de>
To: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>,
	Bart van Assche <bvanassche@acm.org>,
	Balsundar P <balsundar.p@microchip.com>,
	James Bottomley <james.bottomley@hansenpartnership.com>,
	linux-scsi@vger.kernel.org, Hannes Reinecke <hare@suse.de>
Subject: [PATCH 08/13] scsi: add scsi_host_(block,unblock) helper function
Date: Wed,  4 Dec 2019 15:59:13 +0100	[thread overview]
Message-ID: <20191204145918.143134-9-hare@suse.de> (raw)
In-Reply-To: <20191204145918.143134-1-hare@suse.de>

Add helper functions to call scsi_internal_device_block()/
scsi_internal_device_unblock() for all attached devices on a
scsi host.

Signed-off-by: Hannes Reinecke <hare@suse.de>
---
 drivers/scsi/scsi_lib.c  | 30 ++++++++++++++++++++++++++++++
 include/scsi/scsi_host.h |  2 ++
 2 files changed, 32 insertions(+)

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 2563b061f56b..d48405dddce4 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -2840,6 +2840,36 @@ scsi_target_unblock(struct device *dev, enum scsi_device_state new_state)
 }
 EXPORT_SYMBOL_GPL(scsi_target_unblock);
 
+int
+scsi_host_block(struct Scsi_Host *shost)
+{
+	struct scsi_device *sdev;
+	int ret = 0;
+
+	shost_for_each_device(sdev, shost) {
+		ret = scsi_internal_device_block(sdev);
+		if (ret)
+			break;
+	}
+	return ret;
+}
+EXPORT_SYMBOL_GPL(scsi_host_block);
+
+int
+scsi_host_unblock(struct Scsi_Host *shost, int new_state)
+{
+	struct scsi_device *sdev;
+	int ret = 0;
+
+	shost_for_each_device(sdev, shost) {
+		ret = scsi_internal_device_unblock(sdev, new_state);
+		if (ret)
+			break;
+	}
+	return ret;
+}
+EXPORT_SYMBOL_GPL(scsi_host_unblock);
+
 /**
  * scsi_kmap_atomic_sg - find and atomically map an sg-elemnt
  * @sgl:	scatter-gather list
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 5c61f128f8e6..71472eace583 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -760,6 +760,8 @@ static inline int scsi_host_scan_allowed(struct Scsi_Host *shost)
 
 extern void scsi_unblock_requests(struct Scsi_Host *);
 extern void scsi_block_requests(struct Scsi_Host *);
+extern int scsi_host_block(struct Scsi_Host *shost);
+extern int scsi_host_unblock(struct Scsi_Host *shost, int new_state);
 
 struct class_container;
 
-- 
2.16.4


  parent reply	other threads:[~2019-12-04 14:59 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-04 14:59 [PATCHv6 00/13] scsi: remove legacy cmd_list implementation Hannes Reinecke
2019-12-04 14:59 ` [PATCH 01/13] dpt_i2o: rename adpt_i2o_to_scsi() to adpt_i2o_scsi_complete() Hannes Reinecke
2019-12-04 14:59 ` [PATCH 02/13] scsi: add scsi_host_complete_all_commands() helper Hannes Reinecke
2019-12-04 14:59 ` [PATCH 03/13] dpt_i2o: use scsi_host_complete_all_commands() to abort outstanding commands Hannes Reinecke
2019-12-04 14:59 ` [PATCH 04/13] aacraid: Do not wait for outstanding write commands on synchronize_cache Hannes Reinecke
2019-12-10  4:58   ` Balsundar.P
2019-12-04 14:59 ` [PATCH 05/13] aacraid: use scsi_host_complete_all_commands() to terminate outstanding commands Hannes Reinecke
2019-12-10  4:58   ` Balsundar.P
2019-12-04 14:59 ` [PATCH 06/13] aacraid: replace aac_flush_ios() with midlayer helper Hannes Reinecke
2019-12-10  4:59   ` Balsundar.P
2019-12-04 14:59 ` [PATCH 07/13] aacraid: move scsi_(block,unblock)_requests out of _aac_reset_adapter() Hannes Reinecke
2019-12-10  5:00   ` Balsundar.P
2019-12-04 14:59 ` Hannes Reinecke [this message]
2019-12-04 14:59 ` [PATCH 09/13] aacraid: use scsi_host_(block,unblock) to block I/O Hannes Reinecke
2019-12-10  5:01   ` Balsundar.P
2019-12-04 14:59 ` [PATCH 10/13] scsi: add scsi_host_busy_iter() Hannes Reinecke
2019-12-04 14:59 ` [PATCH 11/13] aacraid: use scsi_host_busy_iter() to wait for outstanding commands Hannes Reinecke
2019-12-10  5:01   ` Balsundar.P
2019-12-04 14:59 ` [PATCH 12/13] aacraid: use scsi_host_busy_iter() in get_num_of_incomplete_fibs() Hannes Reinecke
2019-12-10  5:02   ` Balsundar.P
2019-12-04 14:59 ` [PATCH 13/13] scsi: Remove cmd_list functionality Hannes Reinecke
2020-02-13 14:04 [PATCHv7 00/13] scsi: remove legacy cmd_list implementation Hannes Reinecke
2020-02-13 14:04 ` [PATCH 08/13] scsi: add scsi_host_(block,unblock) helper function Hannes Reinecke
2020-02-20  4:53   ` Bart Van Assche
2020-02-26 17:42   ` Christoph Hellwig
2020-02-28  7:53 [PATCHv8 00/13] scsi: remove legacy cmd_list implementation Hannes Reinecke
2020-02-28  7:53 ` [PATCH 08/13] scsi: add scsi_host_(block,unblock) helper function Hannes Reinecke

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=20191204145918.143134-9-hare@suse.de \
    --to=hare@suse.de \
    --cc=balsundar.p@microchip.com \
    --cc=bvanassche@acm.org \
    --cc=hch@lst.de \
    --cc=james.bottomley@hansenpartnership.com \
    --cc=linux-scsi@vger.kernel.org \
    --cc=martin.petersen@oracle.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).