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| author | Martin Kepplinger <martin.kepplinger@puri.sm> | 2021-07-04 09:54:01 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-07-21 23:43:48 -0400 |
| commit | f591a2e0548da88130c7b1c79f1f735273adc683 (patch) | |
| tree | 2c63603723f88b1918ff6fe6ef8a89832464612c | |
| parent | e15f669cd996b85bb07b0e787fa78806477bf211 (diff) | |
| download | linux-f591a2e0548da88130c7b1c79f1f735273adc683.tar.gz linux-f591a2e0548da88130c7b1c79f1f735273adc683.tar.bz2 linux-f591a2e0548da88130c7b1c79f1f735273adc683.zip | |
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>
| -rw-r--r-- | drivers/scsi/scsi_scan.c | 3 | ||||
| -rw-r--r-- | include/scsi/scsi_device.h | 1 | ||||
| -rw-r--r-- | include/scsi/scsi_devinfo.h | 6 |
3 files changed, 7 insertions, 3 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index b059bf2b61d4..3faedf4970ec 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -973,6 +973,9 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result, if (*bflags & BLIST_UNMAP_LIMIT_WS) sdev->unmap_limit_for_ws = 1; + if (*bflags & BLIST_IGN_MEDIA_CHANGE) + sdev->ignore_media_change = 1; + sdev->eh_timeout = SCSI_DEFAULT_EH_TIMEOUT; if (*bflags & BLIST_TRY_VPD_PAGES) 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 | \ |