video: stop sh_mobile_lcdcfb only if started
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>
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1 changed files with 6 additions and 1 deletions
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@ -47,6 +47,7 @@ struct sh_mobile_lcdc_priv {
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#endif
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unsigned long lddckr;
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struct sh_mobile_lcdc_chan ch[2];
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int started;
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};
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/* shared registers */
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@ -451,6 +452,7 @@ static int sh_mobile_lcdc_start(struct sh_mobile_lcdc_priv *priv)
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/* start the lcdc */
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sh_mobile_lcdc_start_stop(priv, 1);
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priv->started = 1;
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/* tell the board code to enable the panel */
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for (k = 0; k < ARRAY_SIZE(priv->ch); k++) {
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@ -493,7 +495,10 @@ static void sh_mobile_lcdc_stop(struct sh_mobile_lcdc_priv *priv)
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}
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/* stop the lcdc */
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sh_mobile_lcdc_start_stop(priv, 0);
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if (priv->started) {
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sh_mobile_lcdc_start_stop(priv, 0);
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priv->started = 0;
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}
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/* stop clocks */
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for (k = 0; k < ARRAY_SIZE(priv->ch); k++)
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