ACPI: LPSS: Add LNXVIDEO -> BYT I2C1 to lpss_device_links
authorHans de Goede <hdegoede@redhat.com>
Thu, 24 Oct 2019 21:57:22 +0000 (23:57 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 17 Dec 2019 19:07:59 +0000 (20:07 +0100)
commit6f1c9dda2a9f5276bf6d00c74499f40e5a24ae1d
tree55d3957e456f4f0679f5a7641d2909002bdbde45
parent7574257af7ae484eb636ffaa83c8e234704fd4a8
ACPI: LPSS: Add LNXVIDEO -> BYT I2C1 to lpss_device_links

commit b3b3519c04bdff91651d0a6deb79dbd4516b5d7b upstream.

Various Asus Bay Trail devices (T100TA, T100CHI, T200TA) have an embedded
controller connected to I2C1 and the iGPU (LNXVIDEO) _PS0/_PS3 methods
access it, so we need to add a consumer link from LNXVIDEO to I2C1 on
these devices to avoid suspend/resume ordering problems.

Fixes: 2d71ee0ce72f ("ACPI / LPSS: Add a device link from the GPU to the BYT I2C5 controller")
Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: 4.20+ <stable@vger.kernel.org> # 4.20+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/acpi/acpi_lpss.c