From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Lad, Prabhakar" Date: Thu, 08 Jan 2015 08:17:59 +0000 Subject: [PATCH 2/2] fbdev: ssd1307fb: check return value while setting offset Message-Id: <1420705079-3741-3-git-send-email-prabhakar.csengg@gmail.com> List-Id: References: <1420705079-3741-1-git-send-email-prabhakar.csengg@gmail.com> In-Reply-To: <1420705079-3741-1-git-send-email-prabhakar.csengg@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: LFBDEV , Jean-Christophe Plagniol-Villard , Tomi Valkeinen , Maxime Ripard Cc: LKML , "Lad, Prabhakar" this patch checks the return value of write command while setting the display offset. Signed-off-by: Lad, Prabhakar --- 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 70e3ce8..a7ecaa6 100644 --- a/drivers/video/fbdev/ssd1307fb.c +++ b/drivers/video/fbdev/ssd1307fb.c @@ -342,7 +342,7 @@ static int ssd1307fb_ssd1306_init(struct ssd1307fb_par *par) /* set display offset value */ ret = ssd1307fb_write_cmd(par->client, SSD1307FB_SET_DISPLAY_OFFSET); - ret = ssd1307fb_write_cmd(par->client, 0x20); + ret = ret & ssd1307fb_write_cmd(par->client, 0x20); if (ret < 0) return ret; -- 1.9.1