Imre Deak e3b39825ed fbdev/efifb: Release PCI device's runtime PM ref during FB destroy ... [ Upstream commit 55285e21f0 ] Atm the EFI FB platform driver gets a runtime PM reference for the associated GFX PCI device during probing the EFI FB platform device and releases it only when the platform device gets unbound. When fbcon switches to the FB provided by the PCI device's driver (for instance i915/drmfb), the EFI FB will get only unregistered without the EFI FB platform device getting unbound, keeping the runtime PM reference acquired during the platform device probing. This reference will prevent the PCI driver from runtime suspending the device. Fix this by releasing the RPM reference from the EFI FB's destroy hook, called when the FB gets unregistered. While at it assert that pm_runtime_get_sync() didn't fail. v2: - Move pm_runtime_get_sync() before register_framebuffer() to avoid its race wrt. efifb_destroy()->pm_runtime_put(). (Daniel) - Assert that pm_runtime_get_sync() didn't fail. - Clarify commit message wrt. platform/PCI device/driver and driver removal vs. device unbinding. Fixes: a6c0fd3d5a ("efifb: Ensure graphics device for efifb stays at PCI D0") Cc: Kai-Heng Feng <kai.heng.feng@canonical.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> (v1) Acked-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210809133146.2478382-1-imre.deak@intel.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-11-18 19:16:22 +01:00
..
backlight	backlight: pwm_bl: Improve bootloader/kernel device handover	2021-08-19 10:59:03 +01:00
console	um: allow disabling NO_IOMEM	2021-06-17 21:44:50 +02:00
fbdev	fbdev/efifb: Release PCI device's runtime PM ref during FB destroy	2021-11-18 19:16:22 +01:00
logo	…
Kconfig	…
Makefile	…
display_timing.c	…
hdmi.c	…
of_display_timing.c	…
of_videomode.c	…
vgastate.c	…
videomode.c	…