via/via_irq: use __func__ to replace string function name

This change also fix checkpatch.pl warning:
WARNING: Prefer using '"%s...", __func__' to using
'via_driver_irq_postinstall', this function's name, in a string
+	DRM_DEBUG("via_driver_irq_postinstall\n");

Signed-off-by: Bernard Zhao <bernard@vivo.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20201119072957.108941-1-bernard@vivo.com

diff --git a/drivers/gpu/drm/via/via_irq.c b/drivers/gpu/drm/via/via_irq.c
index a3e0fb5..faeae5d 100644 (file)
--- a/drivers/gpu/drm/via/via_irq.c
+++ b/drivers/gpu/drm/via/via_irq.c
@@ -308,7 +308,7 @@ int via_driver_irq_postinstall(struct drm_device *dev)
        drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
        u32 status;
 
-       DRM_DEBUG("via_driver_irq_postinstall\n");
+       DRM_DEBUG("fun: %s\n", __func__);
        if (!dev_priv)
                return -EINVAL;