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video: stop sh_mobile_lcdcfb only if started

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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>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm 2009-05-20 14:34:43 +00:00 committed by Paul Mundt
parent 37869fa2da
commit 8e9bb19ef9
1 changed files with 6 additions and 1 deletions
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7
drivers/video/sh_mobile_lcdcfb.c
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@ -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 sh_mobile_lcdc_priv *priv)
/* 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 sh_mobile_lcdc_priv *priv)
}
/* 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++)