[Bug 61529] [r600g][kms][ATI RV710] r600_pcie_gart_tlb_flush+0xf5/0x110

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=61529

--- Comment #10 from Alex Deucher <alexdeucher@gmail.com> ---
(In reply to Thaddaeus Tintenfisch from comment #9)
> The first two warnings are pretty much identical (3 warnings in total).
> Should I create two new reports which reference the patch from this report?
> 
> The main issue here is that the vgaswitcheroo interface is no longer
> available after powering off the dGPU
> (/sys/kernel/debug/vgaswitcheroo/switch is gone).
> 
> From the log:
> 
> [   60.462677] vga_switcheroo: disabled

It's still an acpi hotplug bug:
[   60.454402]  [<ffffffffc022c295>] radeon_pci_remove+0x15/0x20 [radeon]
[   60.454407]  [<ffffffff813e470f>] pci_device_remove+0x3f/0xc0
[   60.454414]  [<ffffffff814e6a86>] __device_release_driver+0x96/0x130
[   60.454418]  [<ffffffff814e6b43>] device_release_driver+0x23/0x30
[   60.454423]  [<ffffffff813df012>] pci_stop_bus_device+0x92/0xa0
[   60.454427]  [<ffffffff813df136>] pci_stop_and_remove_bus_device+0x16/0x30
[   60.454432]  [<ffffffff813fbf23>] disable_slot+0x53/0xa0
[   60.454436]  [<ffffffff813fc642>] acpiphp_check_bridge.part.8+0xd2/0xf0
[   60.454440]  [<ffffffff813fcec2>] acpiphp_hotplug_notify+0xd2/0x220
[   60.454445]  [<ffffffff813fcdf0>] ? acpiphp_post_dock_fixup+0xc0/0xc0
[   60.454450]  [<ffffffff81429fb7>] acpi_device_hotplug+0x3b0/0x3f8
[   60.454454]  [<ffffffff814233ae>] acpi_hotplug_work_fn+0x1f/0x2b

The acpiphp driver is trying to remove the driver after switcheroo has turned
it off.  It should not not kicking in and removing the driver.  It looks like
there is some other broken case in the acpiphp code.  I'd suggest filing a new
acpiphp bug on bugzilla.kernel.org and referencing this bug:
https://bugzilla.kernel.org/show_bug.cgi?id=61891
or adding a comment to that bug that there are still cases that are broken.

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