From: Arnd Bergmann arnd@arndb.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@arndb.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"