From e68cb861bf61895bf9d23b01c5cd19bcc3f4b530 Mon Sep 17 00:00:00 2001 From: Marko Kohtala Date: Tue, 18 Jun 2019 10:41:08 +0300 Subject: video: ssd1307fb: Start page range at page_offset MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit [ Upstream commit dd9782834dd9dde3624ff1acea8859f3d3e792d4 ] The page_offset was only applied to the end of the page range. This caused the display updates to cause a scrolling effect on the display because the amount of data written to the display did not match the range display expected. Fixes: 301bc0675b67 ("video: ssd1307fb: Make use of horizontal addressing mode") Signed-off-by: Marko Kohtala Cc: Mark Rutland Cc: Rob Herring Cc: Daniel Vetter Cc: David Airlie Cc: Michal Vokáč Signed-off-by: Bartlomiej Zolnierkiewicz Link: https://patchwork.freedesktop.org/patch/msgid/20190618074111.9309-4-marko.kohtala@okoko.fi Signed-off-by: Sasha Levin --- drivers/video/fbdev/ssd1307fb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/video') diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c index 2925d5ce8d3e..1267b93c03bd 100644 --- a/drivers/video/fbdev/ssd1307fb.c +++ b/drivers/video/fbdev/ssd1307fb.c @@ -430,7 +430,7 @@ static int ssd1307fb_init(struct ssd1307fb_par *par) if (ret < 0) return ret; - ret = ssd1307fb_write_cmd(par->client, 0x0); + ret = ssd1307fb_write_cmd(par->client, par->page_offset); if (ret < 0) return ret; -- cgit v1.2.3