drm: Protect fb_defio in drivers with CONFIG_KMS_FBDEV_EMULATION

[cascardo/linux.git] / drivers / gpu / drm / udl / udl_fb.c

diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
index d5df555..9688bfa 100644 (file)
--- a/drivers/gpu/drm/udl/udl_fb.c
+++ b/drivers/gpu/drm/udl/udl_fb.c
@@ -203,6 +203,7 @@ static int udl_fb_open(struct fb_info *info, int user)
 
        ufbdev->fb_count++;
 
+#ifdef CONFIG_DRM_FBDEV_EMULATION
        if (fb_defio && (info->fbdefio == NULL)) {
                /* enable defio at last moment if not disabled by client */
 
@@ -218,6 +219,7 @@ static int udl_fb_open(struct fb_info *info, int user)
                info->fbdefio = fbdefio;
                fb_deferred_io_init(info);
        }
+#endif
 
        pr_notice("open /dev/fb%d user=%d fb_info=%p count=%d\n",
                  info->node, user, info, ufbdev->fb_count);
@@ -235,12 +237,14 @@ static int udl_fb_release(struct fb_info *info, int user)
 
        ufbdev->fb_count--;
 
+#ifdef CONFIG_DRM_FBDEV_EMULATION
        if ((ufbdev->fb_count == 0) && (info->fbdefio)) {
                fb_deferred_io_cleanup(info);
                kfree(info->fbdefio);
                info->fbdefio = NULL;
                info->fbops->fb_mmap = udl_fb_mmap;
        }
+#endif
 
        pr_warn("released /dev/fb%d user=%d count=%d\n",
                info->node, user, ufbdev->fb_count);