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From: Hannes Reinecke <hare@suse.de>
To: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>,
	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: Thu, 13 Feb 2020 15:04:17 +0100	[thread overview]
Message-ID: <20200213140422.128382-9-hare@suse.de> (raw)
In-Reply-To: <20200213140422.128382-1-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 610ee41fa54c..a48a5727831b 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -2845,6 +2845,36 @@ 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 d11a0a030dd3..a230e2c0e11f 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -757,6 +757,8 @@ 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:[~2020-02-13 14:05 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-13 14:04 [PATCHv7 00/13] scsi: remove legacy cmd_list implementation Hannes Reinecke
2020-02-13 14:04 ` [PATCH 01/13] dpt_i2o: rename adpt_i2o_to_scsi() to adpt_i2o_scsi_complete() Hannes Reinecke
2020-02-13 14:04 ` [PATCH 02/13] scsi: add scsi_host_complete_all_commands() helper Hannes Reinecke
2020-02-26 17:39   ` Christoph Hellwig
2020-02-26 22:26     ` Hannes Reinecke
2020-02-26 22:58     ` Hannes Reinecke
2020-02-13 14:04 ` [PATCH 03/13] dpt_i2o: use scsi_host_complete_all_commands() to abort outstanding commands Hannes Reinecke
2020-02-13 14:04 ` [PATCH 04/13] aacraid: Do not wait for outstanding write commands on synchronize_cache Hannes Reinecke
2020-02-26 17:40   ` Christoph Hellwig
2020-02-13 14:04 ` [PATCH 05/13] aacraid: use scsi_host_complete_all_commands() to terminate outstanding commands Hannes Reinecke
2020-02-13 14:04 ` [PATCH 06/13] aacraid: replace aac_flush_ios() with midlayer helper Hannes Reinecke
2020-02-26 17:40   ` Christoph Hellwig
2020-02-13 14:04 ` [PATCH 07/13] aacraid: move scsi_(block,unblock)_requests out of _aac_reset_adapter() Hannes Reinecke
2020-02-26 17:42   ` Christoph Hellwig
2020-02-13 14:04 ` Hannes Reinecke [this message]
2020-02-20  4:53   ` [PATCH 08/13] scsi: add scsi_host_(block,unblock) helper function Bart Van Assche
2020-02-26 17:42   ` Christoph Hellwig
2020-02-13 14:04 ` [PATCH 09/13] aacraid: use scsi_host_(block,unblock) to block I/O Hannes Reinecke
2020-02-26 17:43   ` Christoph Hellwig
2020-02-13 14:04 ` [PATCH 10/13] scsi: add scsi_host_busy_iter() Hannes Reinecke
2020-02-26 17:45   ` Christoph Hellwig
2020-02-26 22:28     ` Hannes Reinecke
2020-02-13 14:04 ` [PATCH 11/13] aacraid: use scsi_host_busy_iter() to wait for outstanding commands Hannes Reinecke
2020-02-26 17:46   ` Christoph Hellwig
2020-02-13 14:04 ` [PATCH 12/13] aacraid: use scsi_host_busy_iter() in get_num_of_incomplete_fibs() Hannes Reinecke
2020-02-26 17:46   ` Christoph Hellwig
2020-02-13 14:04 ` [PATCH 13/13] scsi: Remove cmd_list functionality Hannes Reinecke
2020-02-26 17:47   ` Christoph Hellwig
  -- strict thread matches above, loose matches on Subject: below --
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
2019-12-04 14:59 [PATCHv6 00/13] scsi: remove legacy cmd_list implementation Hannes Reinecke
2019-12-04 14:59 ` [PATCH 08/13] scsi: add scsi_host_(block,unblock) helper function Hannes Reinecke

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