From: Liu Ying <Ying.Liu@freescale.com>
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/3] mx3fb: do not support panning with fb blanked
Date: Mon, 11 Jun 2012 01:06:48 +0000 [thread overview]
Message-ID: <1339376810-8247-1-git-send-email-Ying.Liu@freescale.com> (raw)
This patch checks if framebuffer is unblanked before
we actually trigger panning in custom pan display
function.
Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
---
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
next reply other threads:[~2012-06-11 1:06 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-11 1:06 Liu Ying [this message]
2012-06-11 1:06 ` [PATCH 2/3] mx3fb: support pan display with fb_set_var Liu Ying
2012-07-02 6:28 ` Florian Tobias Schandinat
2012-06-11 1:06 ` [PATCH 3/3] mx3fb: avoid screen flash when panning " Liu Ying
2012-07-02 2:18 ` Liu Ying
2012-06-11 9:51 ` [PATCH 1/3] mx3fb: do not support panning with fb blanked Russell King - ARM Linux
2012-06-11 10:46 ` Liu Ying
2012-06-11 11:05 ` Russell King - ARM Linux
2012-06-11 11:18 ` Liu Ying
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