Messages in this thread | | | Subject | Re: Problems with uio_pci_generic in v4.18-rc8 | From | Xiubo Li <> | Date | Sun, 12 Aug 2018 18:55:58 +0800 |
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Hi Harris,
Since the lock protection in uio irq handler is useless currently as discussed in the mail list, so I will revert this commit with small changes and now the testing based LIO/TCMU has been finished.
Thanks, BRs
On 2018/8/11 5:12, Harris, James R wrote: > 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 >
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