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-rw-r--r--linux-core/drm_compat.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/linux-core/drm_compat.h b/linux-core/drm_compat.h
index 39027cf4..08892e6b 100644
--- a/linux-core/drm_compat.h
+++ b/linux-core/drm_compat.h
@@ -328,7 +328,7 @@ void *idr_replace(struct idr *idp, void *ptr, int id);
typedef _Bool bool;
#endif
-#if defined(CONFIG_X86)
+#if (defined(CONFIG_X86) && defined(CONFIG_X86_32))
#define DRM_KMAP_ATOMIC_PROT_PFN
extern void *kmap_atomic_prot_pfn(unsigned long pfn, enum km_type type,
pgprot_t protection);