[PATCH] drm/i915/dmabuf: include asm/smp.h for cache operations

[Arnd Bergmann]

From: Arnd Bergmann <arnd@xxxxxxxx>

The x86 low-level cache management operations are declared in
asm/smp.h, so drivers that call into this code need to include
the header:

drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c:248:3: error: implicit declaration of function 'wbinvd_on_all_cpus' [-Werror,-Wimplicit-function-declaration]
                wbinvd_on_all_cpus();
                ^

Fixes: a035154da45d ("drm/i915/dmabuf: add paranoid flush-on-acquire")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
index 1adcd8e02d29..853a989fcb9b 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
@@ -7,6 +7,7 @@
 #include <linux/dma-buf.h>
 #include <linux/highmem.h>
 #include <linux/dma-resv.h>
+#include <asm/smp.h>
 
 #include "i915_drv.h"
 #include "i915_gem_object.h"
-- 
2.29.2