linux-kernel - [PATCH] drm/i915/gem: fix non-SMP build failure

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Message-Id: <20210125122542.4144849-1-arnd@kernel.org>
Date:   Mon, 25 Jan 2021 13:25:34 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Matthew Auld <matthew.auld@...el.com>,
        Chris Wilson <chris@...is-wilson.co.uk>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] drm/i915/gem: fix non-SMP build failure

From: Arnd Bergmann <arnd@...db.de>

The x86-specific wbinvd_on_all_cpus() function is exported
through asm/smp.h, causing a build failure in the i915 driver
when SMP is disabled:

drivers/gpu/drm/i915/i915_gem.c:1182:2: error: implicit declaration of function 'wbinvd_on_all_cpus' [-Werror,-Wimplicit-function-declaration]

Include that header file explicitly.

Fixes: 30d2bfd09383 ("drm/i915/gem: Almagamate clflushes on freeze")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/gpu/drm/i915/i915_gem.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 9b04dff5eb32..2a1643514577 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -36,6 +36,7 @@
 #include <linux/pci.h>
 #include <linux/dma-buf.h>
 #include <linux/mman.h>
+#include <asm/smp.h>
 
 #include "display/intel_display.h"
 #include "display/intel_frontbuffer.h"
-- 
2.29.2