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s390/cio: remove pm support from chsc subchannel driver

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As part of removing the broken pm-support from s390 arch, remove
the pm-calls from chsc subchannel driver. The power-management
functions are unused since the 'commit 394216275c ("s390: remove
broken hibernate / power management support")'.

Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Vineeth Vijayan 2020-04-02 10:35:40 +02:00 committed by Heiko Carstens
parent 74cee7f3b0
commit bfa11151d2
1 changed files with 0 additions and 29 deletions
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29
drivers/s390/cio/chsc_sch.c
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@ -120,31 +120,6 @@ static void chsc_subchannel_shutdown(struct subchannel *sch)
cio_disable_subchannel(sch);
}
static int chsc_subchannel_prepare(struct subchannel *sch)
{
int cc;
struct schib schib;
/*
* Don't allow suspend while the subchannel is not idle
* since we don't have a way to clear the subchannel and
* cannot disable it with a request running.
*/
cc = stsch(sch->schid, &schib);
if (!cc && scsw_stctl(&schib.scsw))
return -EAGAIN;
return 0;
}
static int chsc_subchannel_freeze(struct subchannel *sch)
{
return cio_disable_subchannel(sch);
}
static int chsc_subchannel_restore(struct subchannel *sch)
{
return cio_enable_subchannel(sch, (u32)(unsigned long)sch);
}
static struct css_device_id chsc_subchannel_ids[] = {
{ .match_flags = 0x1, .type =SUBCHANNEL_TYPE_CHSC, },
{ /* end of list */ },
@ -161,10 +136,6 @@ static struct css_driver chsc_subchannel_driver = {
.probe = chsc_subchannel_probe,
.remove = chsc_subchannel_remove,
.shutdown = chsc_subchannel_shutdown,
.prepare = chsc_subchannel_prepare,
.freeze = chsc_subchannel_freeze,
.thaw = chsc_subchannel_restore,
.restore = chsc_subchannel_restore,
};
static int __init chsc_init_dbfs(void)