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authorMartin Kepplinger <martin.kepplinger@puri.sm>2021-07-04 09:54:01 +0200
committerMartin K. Petersen <martin.petersen@oracle.com>2021-07-21 23:43:48 -0400
commitf591a2e0548da88130c7b1c79f1f735273adc683 (patch)
tree2c63603723f88b1918ff6fe6ef8a89832464612c /include/scsi
parente15f669cd996b85bb07b0e787fa78806477bf211 (diff)
scsi: core: Add new flag BLIST_IGN_MEDIA_CHANGE
Add a new flag for devices that erroneously establish MEDIUM MAY HAVE CHANGED unit attentions. Drivers can set this flag to make the SCSI layer ignore media change events during resume. [mkp: add "ignore" and add corresponding flag to struct scsi_device] Link: https://lore.kernel.org/r/20210704075403.147114-2-martin.kepplinger@puri.sm Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/scsi')
-rw-r--r--include/scsi/scsi_device.h1
-rw-r--r--include/scsi/scsi_devinfo.h6
2 files changed, 4 insertions, 3 deletions
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index ac6ab16abee7..d1de21f799f4 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -205,6 +205,7 @@ struct scsi_device {
unsigned unmap_limit_for_ws:1; /* Use the UNMAP limit for WRITE SAME */
unsigned rpm_autosuspend:1; /* Enable runtime autosuspend at device
* creation time */
+ unsigned ignore_media_change:1; /* Ignore MEDIA CHANGE on resume */
bool offline_already; /* Device offline message logged */
diff --git a/include/scsi/scsi_devinfo.h b/include/scsi/scsi_devinfo.h
index 3fdb322d4c4b..5d14adae21c7 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 MEDIA CHANGE unit attention after resuming from runtime suspend */
+#define BLIST_IGN_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 | \