Ville Syrjälä a6af54d4ad platform/x86: Fix config space access for intel_atomisp2_pm ... [ Upstream commit 6a31061833 ] We lose even config space access when we power gate the ISP via the PUNIT. That makes lspci & co. produce gibberish. To fix that let's try to implement actual runtime pm hooks and inform the pci core that the device always goes to D3cold. That will cause the pci core to resume the device before attempting config space access. This introduces another annoyance though. We get the following error every time we try to resume the device: intel_atomisp2_pm 0000:00:03.0: Refused to change power state, currently in D3 The reason being that the pci core tries to put the device back into D0 via the standard PCI PM mechanism before calling the driver resume hook. To fix this properly we'd need to infiltrate the platform pm hooks (could turn ugly real fast), or use pm domains (which don't seem to exist on x86), or some extra early resume hook for the driver (which doesn't exist either). So maybe we just choose to live with the error? Cc: Hans de Goede <hdegoede@redhat.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Darren Hart <dvhart@infradead.org> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2019-11-06 13:05:25 +01:00
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chrome	platform/chrome: cros_ec_proto: check for NULL transfer function	2019-06-15 11:54:08 +02:00
goldfish	platform: goldfish: Retire pdev_bus	2018-08-02 10:24:51 +02:00
mellanox	platform/mellanox: mlxreg-hotplug: Add devm_free_irq call to remove flow	2019-07-10 09:53:38 +02:00
mips	MIPS: Loongson: Add Loongson-3A R3.1 basic support	2018-07-23 17:53:34 -07:00
olpc
x86	platform/x86: Fix config space access for intel_atomisp2_pm	2019-11-06 13:05:25 +01:00
Kconfig	platform/x86: Move Mellanox platform hotplug driver to platform/mellanox	2018-01-31 10:36:48 -08:00
Makefile	platform/x86: Move Mellanox platform hotplug driver to platform/mellanox	2018-01-31 10:36:48 -08:00