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s390/cio: generate delayed uevent for vfio-ccw subchannels

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The common I/O layer delays the ADD uevent for subchannels and
delegates generating this uevent to the individual subchannel
drivers. The vfio-ccw I/O subchannel driver, however, did not
do that, and will not generate an ADD uevent for subchannels
that had not been bound to a different driver (or none at all,
which also triggers the uevent).

Generate the ADD uevent at the end of the probe function if
uevents were still suppressed for the device.

Message-Id: <20200327124503.9794-3-cohuck@redhat.com>
Fixes: 63f1934d56 ("vfio: ccw: basic implementation for vfio_ccw driver")
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Cornelia Huck 2020-03-27 13:45:03 +01:00 committed by Vasily Gorbik
parent 05ce3e53f3
commit 2bc55eaeb8
1 changed files with 5 additions and 0 deletions
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5
drivers/s390/cio/vfio_ccw_drv.c
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@ -167,6 +167,11 @@ static int vfio_ccw_sch_probe(struct subchannel *sch)
if (ret)
goto out_disable;
if (dev_get_uevent_suppress(&sch->dev)) {
dev_set_uevent_suppress(&sch->dev, 0);
kobject_uevent(&sch->dev.kobj, KOBJ_ADD);
}
VFIO_CCW_MSG_EVENT(4, "bound to subchannel %x.%x.%04x\n",
sch->schid.cssid, sch->schid.ssid,
sch->schid.sch_no);