linux-kernel - [PATCH] fbdev: ssd1307fb: fix logical error

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Date:	Mon, 25 May 2015 21:29:21 +0200
From:	Thomas Niederprüm <niederp@...sik.uni-kl.de>
To:	plagnioj@...osoft.com, tomi.valkeinen@...com,
	maxime.ripard@...e-electrons.com, kernel@...gutronix.de,
	dan.carpenter@...cle.com, prabhakar.csengg@...il.com
Cc:	linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Thomas Niederprüm <niederp@...sik.uni-kl.de>
Subject: [PATCH] fbdev: ssd1307fb: fix logical error

The logical not needs to be done after the bit masking.

Fixes: a3998fe03e87 ("fbdev: ssd1307fb: Unify init code and obtain
hw specific bits from DT")

Signed-off-by: Thomas Niederprüm <niederp@...sik.uni-kl.de>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
---
 drivers/video/fbdev/ssd1307fb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c
index 8fc224c..9771d56 100644
--- a/drivers/video/fbdev/ssd1307fb.c
+++ b/drivers/video/fbdev/ssd1307fb.c
@@ -368,7 +368,7 @@ static int ssd1307fb_init(struct ssd1307fb_par *par)
 	if (ret < 0)
 		return ret;
 
-	compins = 0x02 | (!par->com_seq & 0x1) << 4
+	compins = 0x02 | !(par->com_seq & 0x1) << 4
 				   | (par->com_lrremap & 0x1) << 5;
 	ret = ssd1307fb_write_cmd(par->client, compins);
 	if (ret < 0)
-- 
2.3.0

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