drm/tegra: fb: Add error codes to error messages

This helps in determining what errors happened at specifics points in
the initialization sequence.

Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 7 insertions, 4 deletions

diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c
index a64f23af0841..e9c715d89261 100644
--- a/drivers/gpu/drm/tegra/fb.c
+++ b/drivers/gpu/drm/tegra/fb.c
@@ -233,8 +233,9 @@ static int tegra_fbdev_probe(struct drm_fb_helper *helper,
 
         fbdev->fb = tegra_fb_alloc(drm, &cmd, &bo, 1);
         if (IS_ERR(fbdev->fb)) {
-                dev_err(drm->dev, "failed to allocate DRM framebuffer\n");
                 err = PTR_ERR(fbdev->fb);
+                dev_err(drm->dev, "failed to allocate DRM framebuffer: %d\n",
+                        err);
                 drm_gem_object_unreference_unlocked(&bo->gem);
                 goto release;
         }
@@ -319,19 +320,21 @@ static int tegra_fbdev_init(struct tegra_fbdev *fbdev,
 
         err = drm_fb_helper_init(drm, &fbdev->base, num_crtc, max_connectors);
         if (err < 0) {
-                dev_err(drm->dev, "failed to initialize DRM FB helper\n");
+                dev_err(drm->dev, "failed to initialize DRM FB helper: %d\n",
+                        err);
                 return err;
         }
 
         err = drm_fb_helper_single_add_all_connectors(&fbdev->base);
         if (err < 0) {
-                dev_err(drm->dev, "failed to add connectors\n");
+                dev_err(drm->dev, "failed to add connectors: %d\n", err);
                 goto fini;
         }
 
         err = drm_fb_helper_initial_config(&fbdev->base, preferred_bpp);
         if (err < 0) {
-                dev_err(drm->dev, "failed to set initial configuration\n");
+                dev_err(drm->dev, "failed to set initial configuration: %d\n",
+                        err);
                 goto fini;
         }