]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/commit
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)
committerKleber Sacilotto de Souza <kleber.souza@canonical.com>
Wed, 14 Aug 2019 09:18:49 +0000 (11:18 +0200)
commitee09556c06ce91fd88453f2c2fbd3af5da5f7634
treebf6dd7eaf7fa1f7a2814e7878107d6714a8203de
parente7f2b1246ad0b1effd4de1904cf9c65b7b31075b
x86/sysfb_efi: Add quirks for some devices with swapped width and height

BugLink: https://bugs.launchpad.net/bugs/1839036
commit d02f1aa39189e0619c3525d5cd03254e61bf606a upstream.

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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>
arch/x86/kernel/sysfb_efi.c