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Open Source and information security mailing list archives
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Date: Tue, 16 Oct 2007 16:41:00 -0400 From: Mark Lord <lkml@....ca> To: Kristen Carlson Accardi <kristen.c.accardi@...el.com> Cc: pcihpd-discuss@...ts.sourceforge.net, Linux Kernel <linux-kernel@...r.kernel.org> Subject: Re: PCIe Hotplug: NFG unless I boot with card already inserted. Kristen Carlson Accardi wrote: > On Tue, 16 Oct 2007 14:39:33 -0400 > Mark Lord <lkml@....ca> wrote: > >> Another thing: if a card is already in the slot before pciehp is loaded >> (under any circumstances), then pciehp does *not* see the card until I >> unplug/replug it. You mean that the existing code does not handle it properly. The hardware can see the card just fine, as reflected in the slot status bits. > One other thing to note here, the proper operation of hot plug dictates that > if you boot your laptop with no adapter in the slot, you must first load > the driver in order for the new adapter interrupt to be captured. So, > if you insert a card without the driver loaded, it will not be enumerated > by PCI until you remove it and the reinsert it. Bull puckey. If there's already a card in the slot when we turn on the power, the Linux kernel should find and use that card. This is flawed, and needs fixing. Cheers - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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