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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2010-10-25 16:10:34 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-10-25 16:10:19 +0200 |
| commit | 585b954e1f2fa325d425b0786e4525ac7c9ae575 (patch) | |
| tree | e79174793782e81820c7f6896284f7e341bf9e9d /drivers/s390/cio/device.c | |
| parent | eb4f5d93d70458ea644e0f46737f0bcf87280e83 (diff) | |
| download | linux-585b954e1f2fa325d425b0786e4525ac7c9ae575.tar.gz linux-585b954e1f2fa325d425b0786e4525ac7c9ae575.tar.bz2 linux-585b954e1f2fa325d425b0786e4525ac7c9ae575.zip | |
[S390] cio: notify drivers of channel path events
This patch adds a notification mechanism to inform ccw drivers
about changes to channel paths, which occured while the device
is online.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/device.c')
| -rw-r--r-- | drivers/s390/cio/device.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 07b1a074beaf..881bdfd99140 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -1147,6 +1147,7 @@ err: static int io_subchannel_chp_event(struct subchannel *sch, struct chp_link *link, int event) { + struct ccw_device *cdev = sch_get_cdev(sch); int mask; mask = chp_ssd_get_mask(&sch->ssd_info, link); @@ -1156,22 +1157,30 @@ static int io_subchannel_chp_event(struct subchannel *sch, case CHP_VARY_OFF: sch->opm &= ~mask; sch->lpm &= ~mask; + if (cdev) + cdev->private->path_gone_mask |= mask; io_subchannel_terminate_path(sch, mask); break; case CHP_VARY_ON: sch->opm |= mask; sch->lpm |= mask; + if (cdev) + cdev->private->path_new_mask |= mask; io_subchannel_verify(sch); break; case CHP_OFFLINE: if (cio_update_schib(sch)) return -ENODEV; + if (cdev) + cdev->private->path_gone_mask |= mask; io_subchannel_terminate_path(sch, mask); break; case CHP_ONLINE: if (cio_update_schib(sch)) return -ENODEV; sch->lpm |= mask & sch->opm; + if (cdev) + cdev->private->path_new_mask |= mask; io_subchannel_verify(sch); break; } |