[PATCH 0/2] vga switcheroo: Prevent nouveau irq handler from kill the system

Alex Williamson
2011-05-02T00:49:42Z

On an Intel/Nvidia hybrid graphics system, using the integrated
graphics and powering off the discrete, one of the primary sources
of system hangs seems to be the nouveau driver processing interrupts
while the device is powered off. This short series removes the
unbalanced pci_enable_device() from core switcheroo code, allowing
us to check pci_is_enabled() from the nouveau irq handler to determine
whether to touch hardware. Thanks,

Alex

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Alex Williamson (2):
drm/nouveau: Check that the device is enabled before processing interrupt
vga_switcheroo: Remove unbalanced pci_enable_device

drivers/gpu/drm/nouveau/nouveau_drv.c | 2 ++
drivers/gpu/drm/nouveau/nouveau_irq.c | 3 +++
drivers/gpu/vga/vga_switcheroo.c | 6 ------
3 files changed, 5 insertions(+), 6 deletions(-)