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| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2007-10-12 16:11:22 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2007-10-12 16:13:01 +0200 |
| commit | 1842f2b1847155805f9cc8c834ef4272198b272b (patch) | |
| tree | b887ba8c29702a378c408c12702e8d5c6ce131ac /drivers/s390 | |
| parent | 958974fb596ad037fb571cf2899f783764a83e1a (diff) | |
| download | lwn-1842f2b1847155805f9cc8c834ef4272198b272b.tar.gz lwn-1842f2b1847155805f9cc8c834ef4272198b272b.zip | |
[S390] cio: Disable channel measurements (cmf) on shutdown/reboot.
Disable channel measurements for all ccw devices via the ccw bus's
shutdown method. Clear residual cmf related information that may be
in the schib when setting up a new subchannel.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/cio/cio.c | 5 | ||||
| -rw-r--r-- | drivers/s390/cio/device.c | 2 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c index f2708d65be5a..46905345159e 100644 --- a/drivers/s390/cio/cio.c +++ b/drivers/s390/cio/cio.c @@ -619,6 +619,11 @@ cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid) sch->schib.pmcw.ena = 0; if ((sch->lpm & (sch->lpm - 1)) != 0) sch->schib.pmcw.mp = 1; /* multipath mode */ + /* clean up possible residual cmf stuff */ + sch->schib.pmcw.mme = 0; + sch->schib.pmcw.mbfc = 0; + sch->schib.pmcw.mbi = 0; + sch->schib.mba = 0; return 0; out: if (!cio_is_console(schid)) diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 7fb271c60c27..eea9b1de0af7 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -21,6 +21,7 @@ #include <asm/ccwdev.h> #include <asm/cio.h> #include <asm/param.h> /* HZ */ +#include <asm/cmb.h> #include "cio.h" #include "cio_debug.h" @@ -1440,6 +1441,7 @@ static void ccw_device_shutdown(struct device *dev) cdev = to_ccwdev(dev); if (cdev->drv && cdev->drv->shutdown) cdev->drv->shutdown(cdev); + disable_cmf(cdev); } struct bus_type ccw_bus_type = { |