Re: [PATCH 1/3] pciehp: add ACPI based slot detection

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



* Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>:
> On Tuesday, December 16, 2008 7:07 pm Kenji Kaneshige wrote:
> > There is a problem that some non hot-pluggable PCIe slots are detected
> > as hot-pluggable by pciehp on some platforms. The immediate cause of
> > this problem is that hot-plug capable bit in the Slot Capabilities
> > register is set even for non hot-pluggable slots on those platforms.
> > It seems a BIOS/hardware problem, but we need workaround about that.
> >
> > Some of those platforms define hot-pluggable PCIe slots on ACPI
> > namespace properly, while hot-plug capable bit in the Slot
> > Capabilities register is set improperly. So using ACPI namespace
> > information in pciehp to detect PCIe hot-pluggable slots would be a
> > workaround.
> >
> > This patch adds 'pciehp_detect_mode' module option. When 'acpi' is
> > specified, pciehp uses ACPI namespace information to detect PCIe
> > hot-pluggable slots.
> >
> > Signed-off-by: Kenji Kaneshige <kaneshige.kenji@xxxxxxxxxxxxxx>
> 
> Thanks Kenji-san, I applied these three.  Hopefully Alex can test on some of 
> his problematic platforms; I'll see if it helps on my systems too.

I did test Kenji-san's patch series successfully, but just to be
clear, my platforms aren't problematic. :) All that slot name
workaround stuff was for other platforms (which I don't have
access to).

Thanks.

/ac

--
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

[Index of Archives]     [DMA Engine]     [Linux Coverity]     [Linux USB]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Greybus]

  Powered by Linux