From mboxrd@z Thu Jan 1 00:00:00 1970 From: Liu Ying Date: Mon, 11 Jun 2012 01:06:48 +0000 Subject: [PATCH 1/3] mx3fb: do not support panning with fb blanked Message-Id: <1339376810-8247-1-git-send-email-Ying.Liu@freescale.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-arm-kernel@lists.infradead.org This patch checks if framebuffer is unblanked before we actually trigger panning in custom pan display function. Signed-off-by: Liu Ying --- drivers/video/mx3fb.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/drivers/video/mx3fb.c b/drivers/video/mx3fb.c index e3406ab..d53db60 100644 --- a/drivers/video/mx3fb.c +++ b/drivers/video/mx3fb.c @@ -1063,6 +1063,11 @@ static int mx3fb_pan_display(struct fb_var_screeninfo *var, dev_dbg(fbi->device, "%s [%c]\n", __func__, list_empty(&mx3_fbi->idmac_channel->queue) ? '-' : '+'); + if (mx3_fbi->blank != FB_BLANK_UNBLANK) { + dev_dbg(fbi->device, "panning with fb blanked not supported\n"); + return -EFAULT; + } + if (var->xoffset > 0) { dev_dbg(fbi->device, "x panning not supported\n"); return -EINVAL; -- 1.7.1