[PATCH 4/4] vgaswitcheroo: do not check for NULL debugfs dentry

[Nirmoy Das]

Debugfs APIs returns encoded error on failure so use
debugfs_lookup() instead of checking for NULL.

CC: Lukas Wunner <lukas at wunner.de>
CC: David Airlie <airlied at linux.ie>
CC: Daniel Vetter <daniel at ffwll.ch>
CC: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
CC: Maxime Ripard <mripard at kernel.org>
CC: Thomas Zimmermann <tzimmermann at suse.de>

Signed-off-by: Nirmoy Das <nirmoy.das at amd.com>
---
 drivers/gpu/vga/vga_switcheroo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c
index 365e6ddbe90f..a331525f0b32 100644
--- a/drivers/gpu/vga/vga_switcheroo.c
+++ b/drivers/gpu/vga/vga_switcheroo.c
@@ -914,7 +914,7 @@ static void vga_switcheroo_debugfs_fini(struct vgasr_priv *priv)
 static void vga_switcheroo_debugfs_init(struct vgasr_priv *priv)
 {
 	/* already initialised */
-	if (priv->debugfs_root)
+	if (debugfs_lookup("vgaswitcheroo", NULL))
 		return;

 	priv->debugfs_root = debugfs_create_dir("vgaswitcheroo", NULL);
--
2.32.0