diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c
index 2be6f242f77..1c0b99a835f 100644
--- a/src/gallium/drivers/llvmpipe/lp_screen.c
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -635,13 +635,8 @@ llvmpipe_is_format_supported(struct pipe_screen *_screen,
       /* Disable 64-bit integer formats for RT/samplers.
        * VK CTS crashes with these and they don't make much sense.
        */
-      int c = util_format_get_first_non_void_channel(format_desc->format);
-      if (c >= 0) {
-         if (format_desc->channel[c].pure_integer &&
-             format_desc->channel[c].size == 64)
-            return false;
-      }
-
+      if (util_format_is_int64(format_desc))
+         return false;
    }
 
    if (!(bind & PIPE_BIND_VERTEX_BUFFER) &&
diff --git a/src/util/format/u_format.h b/src/util/format/u_format.h
index 95976ec14a6..fa8516780c8 100644
--- a/src/util/format/u_format.h
+++ b/src/util/format/u_format.h
@@ -1399,6 +1399,13 @@ util_format_is_unorm8(const struct util_format_description *desc)
    return desc->is_unorm && desc->is_array && desc->channel[c].size == 8;
 }
 
+static inline bool
+util_format_is_int64(const struct util_format_description *desc)
+{
+   int c = util_format_get_first_non_void_channel(desc->format);
+   return c >= 0 && desc->channel[c].pure_integer && desc->channel[c].size == 64;
+}
+
 static inline void
 util_format_unpack_z_float(enum pipe_format format, float *dst,
                            const void *src, unsigned w)