Fix a build error on CONFIG_UML, which does not support (provide) wbinvd(). UML can use the generic mb() instead.

../drivers/gpu/drm/r128/ati_pcigart.c: In function ‘drm_ati_pcigart_init’: ../drivers/gpu/drm/r128/ati_pcigart.c:218:2: error: implicit declaration of function ‘wbinvd’ [-Werror=implicit-function-declaration] wbinvd(); ^~~~~~

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") # pre-git Signed-off-by: Randy Dunlap rdunlap@infradead.org Cc: David Airlie airlied@linux.ie Cc: Daniel Vetter daniel@ffwll.ch Cc: dri-devel@lists.freedesktop.org Cc: Jeff Dike jdike@addtoit.com Cc: Richard Weinberger richard@nod.at Cc: Anton Ivanov anton.ivanov@cambridgegreys.com Cc: linux-um@lists.infradead.org --- drivers/gpu/drm/r128/ati_pcigart.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-next-20210901.orig/drivers/gpu/drm/r128/ati_pcigart.c +++ linux-next-20210901/drivers/gpu/drm/r128/ati_pcigart.c @@ -214,7 +214,7 @@ int drm_ati_pcigart_init(struct drm_devi } ret = 0;

-#if defined(__i386__) || defined(__x86_64__) +#if (defined(__i386__) || defined(__x86_64__)) && !defined(CONFIG_UML) wbinvd(); #else mb();