From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org ([198.145.29.99]:50576 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727979AbgDROl2 (ORCPT ); Sat, 18 Apr 2020 10:41:28 -0400 From: Sasha Levin Subject: [PATCH AUTOSEL 5.4 31/78] s390/cio: generate delayed uevent for vfio-ccw subchannels Date: Sat, 18 Apr 2020 10:40:00 -0400 Message-Id: <20200418144047.9013-31-sashal@kernel.org> In-Reply-To: <20200418144047.9013-1-sashal@kernel.org> References: <20200418144047.9013-1-sashal@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-s390-owner@vger.kernel.org List-ID: To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Cornelia Huck , Eric Farman , Vasily Gorbik , Sasha Levin , linux-s390@vger.kernel.org, kvm@vger.kernel.org From: Cornelia Huck [ Upstream commit 2bc55eaeb88d30accfc1b6ac2708d4e4b81ca260 ] 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: 63f1934d562d ("vfio: ccw: basic implementation for vfio_ccw driver") Reviewed-by: Eric Farman Signed-off-by: Cornelia Huck Signed-off-by: Vasily Gorbik Signed-off-by: Sasha Levin --- drivers/s390/cio/vfio_ccw_drv.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/s390/cio/vfio_ccw_drv.c b/drivers/s390/cio/vfio_ccw_drv.c index e401a3d0aa570..339a6bc0339b0 100644 --- a/drivers/s390/cio/vfio_ccw_drv.c +++ b/drivers/s390/cio/vfio_ccw_drv.c @@ -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); -- 2.20.1