linux-kernel - [PATCH v2] staging: panel: initialize lcd if lcd enabled

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Message-Id: <1423654028-7581-1-git-send-email-sudipm.mukherjee@gmail.com>
Date:	Wed, 11 Feb 2015 16:57:08 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Willy Tarreau <willy@...a-x.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Sudip Mukherjee <sudipm.mukherjee@...il.com>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] staging: panel: initialize lcd if lcd enabled

initialiaze lcd parameters only if lcd is enabled.

Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
---
v2: fix indention of comment

 drivers/staging/panel/panel.c | 41 ++++++++++++++++++++++-------------------
 1 file changed, 22 insertions(+), 19 deletions(-)

diff --git a/drivers/staging/panel/panel.c b/drivers/staging/panel/panel.c
index 6ed35b6..31d8608 100644
--- a/drivers/staging/panel/panel.c
+++ b/drivers/staging/panel/panel.c
@@ -2323,25 +2323,6 @@ static int __init panel_init_module(void)
 		break;
 	}
 
-	/*
-	 * Init lcd struct with load-time values to preserve exact current
-	 * functionality (at least for now).
-	 */
-	lcd.height = lcd_height;
-	lcd.width = lcd_width;
-	lcd.bwidth = lcd_bwidth;
-	lcd.hwidth = lcd_hwidth;
-	lcd.charset = lcd_charset;
-	lcd.proto = lcd_proto;
-	lcd.pins.e = lcd_e_pin;
-	lcd.pins.rs = lcd_rs_pin;
-	lcd.pins.rw = lcd_rw_pin;
-	lcd.pins.cl = lcd_cl_pin;
-	lcd.pins.da = lcd_da_pin;
-	lcd.pins.bl = lcd_bl_pin;
-
-	/* Leave it for now, just in case */
-	lcd.esc_seq.len = -1;
 
 	/*
 	 * Overwrite selection with module param values (both keypad and lcd),
@@ -2361,6 +2342,28 @@ static int __init panel_init_module(void)
 
 	lcd.enabled = (selected_lcd_type > 0);
 
+	if (lcd.enabled) {
+		/*
+		 * Init lcd struct with load-time values to preserve exact
+		 * current functionality (at least for now).
+		 */
+		lcd.height = lcd_height;
+		lcd.width = lcd_width;
+		lcd.bwidth = lcd_bwidth;
+		lcd.hwidth = lcd_hwidth;
+		lcd.charset = lcd_charset;
+		lcd.proto = lcd_proto;
+		lcd.pins.e = lcd_e_pin;
+		lcd.pins.rs = lcd_rs_pin;
+		lcd.pins.rw = lcd_rw_pin;
+		lcd.pins.cl = lcd_cl_pin;
+		lcd.pins.da = lcd_da_pin;
+		lcd.pins.bl = lcd_bl_pin;
+
+		/* Leave it for now, just in case */
+		lcd.esc_seq.len = -1;
+	}
+
 	switch (selected_keypad_type) {
 	case KEYPAD_TYPE_OLD:
 		keypad_profile = old_keypad_profile;
-- 
1.8.1.2

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