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From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 11/11] fb: add a usage counter to prevent double enable/disable
Date: Thu, 24 Jun 2010 11:39:16 +0200	[thread overview]
Message-ID: <1277372356-32370-12-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1277372356-32370-1-git-send-email-s.hauer@pengutronix.de>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/video/fb.c |    5 +++++
 include/fb.h       |    4 +++-
 2 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/drivers/video/fb.c b/drivers/video/fb.c
index 841c3af..f9a425e 100644
--- a/drivers/video/fb.c
+++ b/drivers/video/fb.c
@@ -39,6 +39,9 @@ static int fb_enable_set(struct device_d *dev, struct param_d *param,
 
 	enable = simple_strtoul(val, NULL, 0);
 
+	if (info->enabled == !!enable)
+		return 0;
+
 	if (enable) {
 		info->fbops->fb_enable(info);
 		new = "1";
@@ -49,6 +52,8 @@ static int fb_enable_set(struct device_d *dev, struct param_d *param,
 
 	dev_param_set_generic(dev, param, new);
 
+	info->enabled = !!enable;
+
 	return 0;
 }
 
diff --git a/include/fb.h b/include/fb.h
index 218500b..379f931 100644
--- a/include/fb.h
+++ b/include/fb.h
@@ -96,7 +96,9 @@ struct fb_info {
 	struct fb_bitfield red;		/* bitfield in fb mem if true color, */
 	struct fb_bitfield green;	/* else only length is significant */
 	struct fb_bitfield blue;
-	struct fb_bitfield transp;	/* transparency			*/	
+	struct fb_bitfield transp;	/* transparency			*/
+
+	int enabled;
 };
 
 int register_framebuffer(struct fb_info *info);
-- 
1.7.1


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  parent reply	other threads:[~2010-06-24  9:39 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-24  9:39 assorted patches Sascha Hauer
2010-06-24  9:39 ` [PATCH 01/11] i.MX27: merge iomux pim definitions from kernel Sascha Hauer
2010-06-24  9:39 ` [PATCH 02/11] imxfb: Add board specific hook to enable display Sascha Hauer
2010-06-24  9:39 ` [PATCH 03/11] imxfb: do not enable framebuffer on startup Sascha Hauer
2010-06-24  9:39 ` [PATCH 04/11] memcpy cmd: Do not expect to read/write the whole chunk at once Sascha Hauer
2010-06-25  7:17   ` Peter Korsgaard
2010-06-28  8:37     ` Sascha Hauer
2010-06-24  9:39 ` [PATCH 05/11] armlinux: reorder tag setup Sascha Hauer
2010-06-24  9:39 ` [PATCH 06/11] remove eco920 board support Sascha Hauer
2010-06-24  9:39 ` [PATCH 07/11] usbnet: remove unused dev member in struct usbnet Sascha Hauer
2010-06-24  9:39 ` [PATCH 08/11] i.MX serial: Use readl/writel instead of pointer deref Sascha Hauer
2010-06-24  9:39 ` [PATCH 09/11] i.MX clocksource: " Sascha Hauer
2010-06-24  9:39 ` [PATCH 10/11] i.MX27: Add some missing device base addresses Sascha Hauer
2010-06-24  9:39 ` Sascha Hauer [this message]
2010-06-24 15:05 ` assorted patches Eric Bénard

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