diff options
| author |   Sebastian Ott <sebott@linux.vnet.ibm.com> | 2017-09-14 13:55:22 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-09-19 08:36:19 +0200 |
| commit | 55fb7347579017bdb09550b4e8019447340b7004 (patch) | |
| tree | ae905589218938dd40ac2c68f35942a93833038e /drivers/s390/cio/io_sch.h | |
| parent | s390/scm_blk: consistently use blk_status_t as error type (diff) | |
| download | linux-dev-55fb7347579017bdb09550b4e8019447340b7004.tar.xz linux-dev-55fb7347579017bdb09550b4e8019447340b7004.zip | |
s390/cio: recover from bad paths
In some situations we don't receive notification from firmware that
a previously unusable channelpath is usable again.
Schedule recovery for devices that return from path verification
without using all potentially usable paths. The recovery thread will
periodically trigger a path verification on the affected devices.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Suggested-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/io_sch.h')
| -rw-r--r-- | drivers/s390/cio/io_sch.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/s390/cio/io_sch.h b/drivers/s390/cio/io_sch.h index 220f49145b2f..9a1b56b2df3e 100644 --- a/drivers/s390/cio/io_sch.h +++ b/drivers/s390/cio/io_sch.h @@ -131,6 +131,8 @@ struct ccw_device_private { not operable */ u8 path_gone_mask; /* mask of paths, that became unavailable */ u8 path_new_mask; /* mask of paths, that became available */ + u8 path_broken_mask; /* mask of paths, which were found to be + unusable */ struct { unsigned int fast:1; /* post with "channel end" */ unsigned int repall:1; /* report every interrupt status */ |