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From: "Harris, James R" <james.r.harris@intel.com>
To: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
	"xiubli@redhat.com" <xiubli@redhat.com>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	"Jiang, Dave" <dave.jiang@intel.com>,
	"Walker, Benjamin" <benjamin.walker@intel.com>,
	"Wodkowski, PawelX" <pawelx.wodkowski@intel.com>
Subject: Problems with uio_pci_generic in v4.18-rc8
Date: Fri, 10 Aug 2018 21:12:19 +0000	[thread overview]
Message-ID: <21BF98B1-0EA5-46BC-BC68-196190880087@intel.com> (raw)

Hi,
 
Using Linux kernel v4.18-rc8, I am unable to bind a PCI device to uio_pci_generic.  This works fine with v4.18-rc4.  dmesg shows:
 
[  336.221585] genirq: Threaded irq requested with handler=NULL and !ONESHOT for irq 33
[  336.221681] uio_pci_generic: probe of 0000:04:00.0 failed with error -22
 
This problem has been reproduced on multiple systems.
 
This seems to be related to commit 9421e45f5 (“uio: use request_threaded_irq instead”) which was merged in -rc5.  Reverting this commit fixes the issue (I also reverted 543af5861f and 57c5f4df0a which also touch uio.c - just to be safe).
 
This seems like a serious regression to uio_pci_generic, but any tips or pointers would be appreciated.
 
Thanks,
 
Jim Harris


             reply	other threads:[~2018-08-10 21:12 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-10 21:12 Harris, James R [this message]
2018-08-12 10:55 ` Xiubo Li
2018-08-12 11:03   ` gregkh
2018-08-12 11:45     ` Xiubo Li

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