Commit 4761703b authored Dec 16, 2014 by Ilia Mirkin Committed by Ben Skeggs Dec 22, 2014

drm/nv4c/mc: disable msi

Several users have, over time, reported issues with MSI on these IGPs.
They're old, rarely available, and MSI doesn't provide such huge
advantages on them. Just disable.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=87361
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=74492


Fixes: fa8c9ac7 ("drm/nv4c/mc: nv4x igp's have a different msi rearm register")
Cc: stable@vger.kernel.org
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

parent e9d91238

drivers/gpu/drm/nouveau/core/subdev/mc/nv4c.c

+0 −8

Original line number	Diff line number	Diff line
		@@ -24,13 +24,6 @@

		#include "nv04.h"

		static void
		nv4c_mc_msi_rearm(struct nouveau_mc *pmc)
		{
		struct nv04_mc_priv priv = (void )pmc;
		nv_wr08(priv, 0x088050, 0xff);
		}

		struct nouveau_oclass *
		nv4c_mc_oclass = &(struct nouveau_mc_oclass) {
		.base.handle = NV_SUBDEV(MC, 0x4c),
		@@ -41,5 +34,4 @@ nv4c_mc_oclass = &(struct nouveau_mc_oclass) {
		.fini = _nouveau_mc_fini,
		},
		.intr = nv04_mc_intr,
		.msi_rearm = nv4c_mc_msi_rearm,
		}.base;