Patch "drm/mgag200: Flag all G200 SE A machines as broken wrt <startadd>" has been added to the 5.4-stable tree

[gregkh at linuxfoundation.org]

This is a note to let you know that I've just added the patch titled

    drm/mgag200: Flag all G200 SE A machines as broken wrt <startadd>

to the 5.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-mgag200-flag-all-g200-se-a-machines-as-broken-wrt-startadd.patch
and it can be found in the queue-5.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable at vger.kernel.org> know about it.


>From 4adf0b49eea926a55fd956ef7d86750f771435ff Mon Sep 17 00:00:00 2001
From: Thomas Zimmermann <tzimmermann at suse.de>
Date: Fri, 6 Dec 2019 09:19:01 +0100
Subject: drm/mgag200: Flag all G200 SE A machines as broken wrt <startadd>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Thomas Zimmermann <tzimmermann at suse.de>

commit 4adf0b49eea926a55fd956ef7d86750f771435ff upstream.

Several MGA G200 SE machines don't respect the value of the startadd
register field. After more feedback on affected machines, neither PCI
subvendor ID nor the internal ID seem to hint towards the bug. All
affected machines have a PCI ID of 0x0522 (i.e., G200 SE A). It was
decided to flag all G200 SE A machines as broken.

Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
Acked-by: Gerd Hoffmann <kraxel at redhat.com>
Fixes: 1591fadf857c ("drm/mgag200: Add workaround for HW that does not support 'startadd'")
Cc: Thomas Zimmermann <tzimmermann at suse.de>
Cc: John Donnelly <john.p.donnelly at oracle.com>
Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
Cc: Gerd Hoffmann <kraxel at redhat.com>
Cc: Dave Airlie <airlied at redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Cc: Maxime Ripard <mripard at kernel.org>
Cc: David Airlie <airlied at linux.ie>
Cc: Sam Ravnborg <sam at ravnborg.org>
Cc: "Y.C. Chen" <yc_chen at aspeedtech.com>
Cc: Neil Armstrong <narmstrong at baylibre.com>
Cc: Thomas Gleixner <tglx at linutronix.de>
Cc: "José Roberto de Souza" <jose.souza at intel.com>
Cc: Andrzej Pietrasiewicz <andrzej.p at collabora.com>
Cc: dri-devel at lists.freedesktop.org
Cc: <stable at vger.kernel.org> # v5.3+
Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Cc: Allison Randal <allison at lohutok.net>
Cc: Alex Deucher <alexander.deucher at amd.com>
Cc: "Noralf Trønnes" <noralf at tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191206081901.9938-1-tzimmermann@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>

---
 drivers/gpu/drm/mgag200/mgag200_drv.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/gpu/drm/mgag200/mgag200_drv.c
+++ b/drivers/gpu/drm/mgag200/mgag200_drv.c
@@ -30,9 +30,8 @@ module_param_named(modeset, mgag200_mode
 static struct drm_driver driver;
 
 static const struct pci_device_id pciidlist[] = {
-	{ PCI_VENDOR_ID_MATROX, 0x522, PCI_VENDOR_ID_SUN, 0x4852, 0, 0,
+	{ PCI_VENDOR_ID_MATROX, 0x522, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 		G200_SE_A | MGAG200_FLAG_HW_BUG_NO_STARTADD},
-	{ PCI_VENDOR_ID_MATROX, 0x522, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_A },
 	{ PCI_VENDOR_ID_MATROX, 0x524, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_B },
 	{ PCI_VENDOR_ID_MATROX, 0x530, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EV },
 	{ PCI_VENDOR_ID_MATROX, 0x532, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_WB },


Patches currently in stable-queue which might be from tzimmermann at suse.de are

queue-5.4/drm-mgag200-flag-all-g200-se-a-machines-as-broken-wrt-startadd.patch
queue-5.4/drm-mgag200-store-flags-from-pci-driver-data-in-device-structure.patch
queue-5.4/drm-mgag200-add-workaround-for-hw-that-does-not-support-startadd.patch
queue-5.4/drm-mgag200-extract-device-type-from-flags.patch