On 05/11/15 08:25, Gabriele Paoloni wrote: > Hi Marc > >> -----Original Message----- >> From: linux-pci-owner@xxxxxxxxxxxxxxx [mailto:linux-pci-owner@xxxxxxxxxxxxxxx] >> On Behalf Of Marc Zyngier >> Sent: 04 November 2015 09:04 >> To: majun (F); Thomas Gleixner; Jiang Liu; Jason Cooper >> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-pci@xxxxxxxxxxxxxxx; linux- >> kernel@xxxxxxxxxxxxxxx >> Subject: Re: [PATCH RFC 7/7] irqchip: [Example] dummy wired interrupt/MSI >> bridge driver >> >> On 04/11/15 08:00, majun (F) wrote: [...] >>> I think,for a interrupt controller, msichip driver initialization maybe is >> too late >>> for some devices which connect to this irqchip if we use >> module_platform_driver. >> >> That's a consequence of this design. This is why I insisted on the fact >> that this is currently avoided by using deferred probe in drivers, and > > Mmm using te deferred probe would mean to rework all the drivers of the > potential devices connected to mbi-gen...would that be sustainable/acceptable? I'm tempted to reply "Not my problem". Or rather, not a problem I'm trying to solve right now (or any time soon). I'm pretty sure that sprinkling -EPROBE_DEFER on all possible drivers will result in a resounding NAK, which is is why I suggested that someone with a vested interest dedicates some quality time helping those who are trying to solve this issue for good. >> that it should be solved by having a probe order. Either way, this is >> not something that we can solve at that level (see the multiple proposal >> for this on the various lists). > > Could you point me to the relevant discussions for this...? Google is, as always, your dearest friend. But here you go: - LWN has some quality coverage of the KS discussions (assuming you're a subscriber, otherwise you'll have to wait for another week): http://lwn.net/Articles/662820/ - There is also Tomeu Vizoso's series, which itself builds upon other previous attempts at solving this: https://lwn.net/Articles/658690/ Thanks, M. -- Jazz is not dead. It just smells funny... -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
