linux-kernel - [PATCH v3 08/12] video: da8xx-fb: invoke platform callback safely

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Message-ID: <80ce1ec4b0b5dd307eecb82029ec97583724a312.1358871750.git.afzal@ti.com>
Date:	Tue, 22 Jan 2013 22:22:47 +0530
From:	Afzal Mohammed <afzal@...com>
To:	<linux-fbdev@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
CC:	Florian Tobias Schandinat <FlorianSchandinat@....de>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>,
	Rob Landley <rob@...dley.net>,
	Steffen Trumtrar <s.trumtrar@...gutronix.de>,
	Mike Turquette <mturquette@...aro.org>
Subject: [PATCH v3 08/12] video: da8xx-fb: invoke platform callback safely

Ensure that platform data is present before checking whether platform
callback is present (the one used to control backlight). So far this
was not an issue as driver was purely non-DT triggered, but now DT
support has been added.

Signed-off-by: Afzal Mohammed <afzal@...com>
---
 drivers/video/da8xx-fb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c
index 08ee8eb..0beed20 100644
--- a/drivers/video/da8xx-fb.c
+++ b/drivers/video/da8xx-fb.c
@@ -1347,7 +1347,7 @@ static int fb_probe(struct platform_device *device)
 	par->dev = &device->dev;
 	par->lcdc_clk = fb_clk;
 	par->lcd_fck_rate = clk_get_rate(fb_clk);
-	if (fb_pdata->panel_power_ctrl) {
+	if (fb_pdata && fb_pdata->panel_power_ctrl) {
 		par->panel_power_ctrl = fb_pdata->panel_power_ctrl;
 		par->panel_power_ctrl(1);
 	}
-- 
1.7.12

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