From: Magnus Damm <magnus.damm@gmail.com>
To: linux-sh@vger.kernel.org
Subject: [PATCH] video: stop sh_mobile_lcdcfb only if started
Date: Wed, 20 May 2009 14:34:43 +0000 [thread overview]
Message-ID: <20090520143443.8362.79529.sendpatchset@rx1.opensource.se> (raw)
From: Magnus Damm <damm@igel.co.jp>
This patch fixes the LCDC driver to avoid calling the
function sh_mobile_lcdc_start_stop(priv, 0) unless the
same function has been called before to start the LCDC
hardware.
Triggered when sh_mobile_lcdcfb.c failed to probe() due to
missing MSTP clocks.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
---
drivers/video/sh_mobile_lcdcfb.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
--- 0001/drivers/video/sh_mobile_lcdcfb.c
+++ work/drivers/video/sh_mobile_lcdcfb.c 2009-05-20 22:26:40.000000000 +0900
@@ -47,6 +47,7 @@ struct sh_mobile_lcdc_priv {
#endif
unsigned long lddckr;
struct sh_mobile_lcdc_chan ch[2];
+ int started;
};
/* shared registers */
@@ -451,6 +452,7 @@ static int sh_mobile_lcdc_start(struct s
/* start the lcdc */
sh_mobile_lcdc_start_stop(priv, 1);
+ priv->started = 1;
/* tell the board code to enable the panel */
for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
@@ -493,7 +495,10 @@ static void sh_mobile_lcdc_stop(struct s
}
/* stop the lcdc */
- sh_mobile_lcdc_start_stop(priv, 0);
+ if (priv->started) {
+ sh_mobile_lcdc_start_stop(priv, 0);
+ priv->started = 0;
+ }
/* stop clocks */
for (k = 0; k < ARRAY_SIZE(priv->ch); k++)
reply other threads:[~2009-05-20 14:34 UTC|newest]
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