[Intel-gfx] [PATCH v2 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 <lu...@wunner.de>
CC: David Airlie <airl...@linux.ie>
CC: Daniel Vetter <dan...@ffwll.ch>
CC: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
CC: Maxime Ripard <mrip...@kernel.org>
CC: Thomas Zimmermann <tzimmerm...@suse.de>

Signed-off-by: Nirmoy Das <nirmoy....@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..07ab8d85e899 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 (priv->debugfs_root && !IS_ERR(priv->debugfs_root))
                return;

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