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| author | Adrian Hunter <adrian.hunter@intel.com> | 2022-02-28 14:36:51 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-08 15:22:54 +0300 |
| commit | 6ade94e6afc6b7f6b0829c521cc3caaa7fbb82ab (patch) | |
| tree | e2968e3e42dcb0086e981d2f7c7965fc507556db /include/scsi | |
| parent | 5e217aa2c8258ed12031e1b6bc8818f7cd86bdf2 (diff) | |
| download | linux-6ade94e6afc6b7f6b0829c521cc3caaa7fbb82ab.tar.xz | |
scsi: core: sd: Add silence_suspend flag to suppress some PM messages
commit af4edb1d50c6d1044cb34bc43621411b7ba2cffe upstream.
Kernel messages produced during runtime PM can cause a never-ending cycle
because user space utilities (e.g. journald or rsyslog) write the messages
back to storage, causing runtime resume, more messages, and so on.
Messages that tell of things that are expected to happen are arguably
unnecessary, so add a flag to suppress them. This flag is used by the UFS
driver.
Link: https://lore.kernel.org/r/20220228113652.970857-2-adrian.hunter@intel.com
Cc: stable@vger.kernel.org
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/scsi')
| -rw-r--r-- | include/scsi/scsi_device.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index b97e142a7ca9..3b3dbc37653d 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -206,6 +206,7 @@ struct scsi_device { unsigned rpm_autosuspend:1; /* Enable runtime autosuspend at device * creation time */ unsigned ignore_media_change:1; /* Ignore MEDIA CHANGE on resume */ + unsigned silence_suspend:1; /* Do not print runtime PM related messages */ bool offline_already; /* Device offline message logged */ |