[PATCH 6/7] s390/dasd: add autoquiesce event for start IO error

From: Stefan Haberland <sth@linux.ibm.com>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org,
	Jan Hoeppner <hoeppner@linux.ibm.com>,
	linux-s390@vger.kernel.org, Heiko Carstens <hca@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Christian Borntraeger <borntraeger@de.ibm.com>
Subject: [PATCH 6/7] s390/dasd: add autoquiesce event for start IO error
Date: Wed,  5 Apr 2023 16:20:16 +0200	[thread overview]
Message-ID: <20230405142017.2446986-7-sth@linux.ibm.com> (raw)
In-Reply-To: <20230405142017.2446986-1-sth@linux.ibm.com>

Add a check for errors in the start_io function that signal a not
working device. Trigger an autoquiesce event in that case.

Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
---
 drivers/s390/block/dasd.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 1bfd0e17a4dc..3696931f8015 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1452,6 +1452,8 @@ int dasd_start_IO(struct dasd_ccw_req *cqr)
 	case -ENODEV:
 		DBF_DEV_EVENT(DBF_WARNING, device, "%s",
 			      "start_IO: -ENODEV device gone, retry");
+		/* this is equivalent to CC=3 for SSCH report this to EER */
+		dasd_handle_autoquiesce(device, cqr, DASD_EER_STARTIO);
 		break;
 	case -EIO:
 		DBF_DEV_EVENT(DBF_WARNING, device, "%s",
-- 
2.37.2

