On 02/19/2013 05:28 PM, Paul Bolle wrote: > Richard, > > On Tue, 2013-02-19 at 16:25 +0800, Wei Yang wrote: >> Sorry for bothering, I am looking at this and try to understand the process, >> while get some confusion. >> >> 1. The error log will be printed every time suspend/resume, no matter whether >> the device is plug in/plug out during the suspend as discussed below? >> >> If the device is always there, no one touch it, the error message still be >> printed? >> >> 2. In my mind, before the pcied_init is called, those pci_dev are >> already enumerated, such as the wireless card in this case. >> >> During the boot stage, if the pciehp_force is set to true, the error messge >> still be printed? Since I don't have those devices to create pcie_device, I >> can't test this. >> >> 3. Do you think it would be find to remove those devices at the suspend stage? >> Then they will be added again at the resume stage? > > Bypassing your questions, I'd like to point you at > http://article.gmane.org/gmane.linux.kernel.pci/20077 , in which Rafael > suggested a possible solution to this situation. (There's some extra > info in other messages in this thread.) Yes, Rafael's suggestion seems a possible solution to this situation. In my mind, it's impossible to figure out a unique pci device with the registers in the PCI config space, something like "vender_id + device_id" can not describe a unique device. The pcie device has a feature likes "series number" which could be used to figure out a unique one, but this feature is optional. If it's not set, we still can not detect a unique pcie device. Sorry for my poor knowledge, if what I said has any mistake, please figure it out!:) Thanks, Gu > I must confess that I'm not at all sure how to implement it and that so > far I have, rather cowardly, not even drafted a solution along those > lines. > > > Paul Bolle > > -- > 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 > -- 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
