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From: Martin Kepplinger <martin.kepplinger@puri.sm>
To: martin.kepplinger@puri.sm, bvanassche@acm.org
Cc: hch@infradead.org, jejb@linux.ibm.com, kernel@puri.sm,
	linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
	linux-scsi@vger.kernel.org, martin.petersen@oracle.com,
	stern@rowland.harvard.edu
Subject: [PATCH v6 1/3] scsi: devinfo: add new flag BLIST_MEDIA_CHANGE
Date: Sun,  4 Jul 2021 09:54:01 +0200	[thread overview]
Message-ID: <20210704075403.147114-2-martin.kepplinger@puri.sm> (raw)
In-Reply-To: <20210704075403.147114-1-martin.kepplinger@puri.sm>

add a new flag for devices that issue MEDIA CHANGE unit attentions
when actually no medium changed. Drivers can then act accordingly in
case they need to work around it, i.e. in resume().

Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
---
 include/scsi/scsi_devinfo.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/scsi/scsi_devinfo.h b/include/scsi/scsi_devinfo.h
index 3fdb322d4c4b..766fa876598e 100644
--- a/include/scsi/scsi_devinfo.h
+++ b/include/scsi/scsi_devinfo.h
@@ -28,7 +28,8 @@
 #define BLIST_LARGELUN		((__force blist_flags_t)(1ULL << 9))
 /* override additional length field */
 #define BLIST_INQUIRY_36	((__force blist_flags_t)(1ULL << 10))
-#define __BLIST_UNUSED_11	((__force blist_flags_t)(1ULL << 11))
+/* ignore one MEDIA CHANGE unit attention after resuming from runtime suspend */
+#define BLIST_MEDIA_CHANGE	((__force blist_flags_t)(1ULL << 11))
 /* do not do automatic start on add */
 #define BLIST_NOSTARTONADD	((__force blist_flags_t)(1ULL << 12))
 #define __BLIST_UNUSED_13	((__force blist_flags_t)(1ULL << 13))
@@ -73,8 +74,7 @@
 #define __BLIST_HIGH_UNUSED (~(__BLIST_LAST_USED | \
 			       (__force blist_flags_t) \
 			       ((__force __u64)__BLIST_LAST_USED - 1ULL)))
-#define __BLIST_UNUSED_MASK (__BLIST_UNUSED_11 | \
-			     __BLIST_UNUSED_13 | \
+#define __BLIST_UNUSED_MASK (__BLIST_UNUSED_13 | \
 			     __BLIST_UNUSED_14 | \
 			     __BLIST_UNUSED_15 | \
 			     __BLIST_UNUSED_16 | \
-- 
2.30.2


  reply	other threads:[~2021-07-04  7:54 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-04  7:54 [PATCH v6 0/3] fix runtime PM for SD card readers Martin Kepplinger
2021-07-04  7:54 ` Martin Kepplinger [this message]
2021-07-04  7:54 ` [PATCH v6 2/3] scsi: sd: send REQUEST SENSE for BLIST_MEDIA_CHANGE devices in runtime_resume() Martin Kepplinger
2021-07-04  7:54 ` [PATCH v6 3/3] scsi: devinfo: add BLIST_MEDIA_CHANGE for Ultra HS-SD/MMC usb cardreaders Martin Kepplinger
2021-07-22  3:59 ` [PATCH v6 0/3] fix runtime PM for SD card readers Martin K. Petersen
2021-07-27  4:14 ` Martin K. Petersen

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