x86/sysfb_efi: Add quirks for some devices with swapped width and height
authorHans de Goede <hdegoede@redhat.com>
Sun, 21 Jul 2019 15:24:18 +0000 (17:24 +0200)
committerThomas Gleixner <tglx@linutronix.de>
Mon, 22 Jul 2019 08:47:11 +0000 (10:47 +0200)
commitd02f1aa39189e0619c3525d5cd03254e61bf606a
tree79e093d1f2998b46c178c1da2053c055cc17ca5a
parent2af7c85714d8cafadf925d55441458eae312cd6b
x86/sysfb_efi: Add quirks for some devices with swapped width and height

Some Lenovo 2-in-1s with a detachable keyboard have a portrait screen but
advertise a landscape resolution and pitch, resulting in a messed up
display if the kernel tries to show anything on the efifb (because of the
wrong pitch).

Fix this by adding a new DMI match table for devices which need to have
their width and height swapped.

At first it was tried to use the existing table for overriding some of the
efifb parameters, but some of the affected devices have variants with
different LCD resolutions which will not work with hardcoded override
values.

Reference: https://bugzilla.redhat.com/show_bug.cgi?id=1730783
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20190721152418.11644-1-hdegoede@redhat.com
arch/x86/kernel/sysfb_efi.c