linux-kernel - [PATCH] video: backlight: remove unused header

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Date:	Wed, 13 Jun 2012 09:47:31 +0200
From:	Paul Bolle <pebolle@...cali.nl>
To:	Florian Tobias Schandinat <FlorianSchandinat@....de>
Cc:	linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] video: backlight: remove unused header

Commit 9befe40f6e018e508b047eb76d189ede9b4ff03d ("video: backlight:
support s6e8ax0 panel driver based on MIPI DSI") added s6e8ax0.h, but
no file includes it. That's probably a good thing, because it declares
an extern void function that is defined static int in s6e8ax0.c.
Besides, that function is also wrapped in the module_init() macro, which
should do everything needed to make that function available to the code
outside of s6e8ax0.c. This header can safely be removed.

Signed-off-by: Paul Bolle <pebolle@...cali.nl>
---
0) Tested mainly by using various git tools on the (history of the)
tree.

1) Shouldn't s6e8ax0_init() and s6e8ax0_exit(), both in s6e8ax0.c, carry
the usual __init and __exit attributes?

2) But note that all the module related code in s6e8ax0.c seems moot
currently: EXYNOS_LCD_S6E8AX0 is a boolean Kconfig symbol, so the code
can only be used builtin. So, as far as I can tell, either that symbol
(and the symbols on which it depends) should be made tristate, or the
module related code can be removed from s6e8ax0.c.

 drivers/video/exynos/s6e8ax0.h |   21 ---------------------
 1 files changed, 0 insertions(+), 21 deletions(-)
 delete mode 100644 drivers/video/exynos/s6e8ax0.h

diff --git a/drivers/video/exynos/s6e8ax0.h b/drivers/video/exynos/s6e8ax0.h
deleted file mode 100644
index 1f1b270..0000000
--- a/drivers/video/exynos/s6e8ax0.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/* linux/drivers/video/backlight/s6e8ax0.h
- *
- * MIPI-DSI based s6e8ax0 AMOLED LCD Panel definitions.
- *
- * Copyright (c) 2011 Samsung Electronics
- *
- * Inki Dae, <inki.dae@...sung.com>
- * Donghwa Lee <dh09.lee@...sung.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#ifndef _S6E8AX0_H
-#define _S6E8AX0_H
-
-extern void s6e8ax0_init(void);
-
-#endif
-
-- 
1.7.7.6

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