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VIDEO: amba clcd: don't disable an already disabled clock

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Fix the clock enable/disable tracking in the AMBA CLCD driver so
that the driver doesn't try to disable an already disabled clock,
thereby causing the clock (if shared) to become unbalanced.

This resolves a problem with CLCD on LPC32xx ARM platforms.

Reported-by: Kevin Wells <wellsk40@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2010-08-17 22:13:22 +01:00
commit 99c796df94
2 changed files with 9 additions and 2 deletions
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include/linux/amba/clcd.h
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@ -150,6 +150,7 @@ struct clcd_fb {
u16 off_cntl;
u32 clcd_cntl;
u32 cmap[16];
bool clk_enabled;
};
static inline void clcdfb_decode(struct clcd_fb *fb, struct clcd_regs *regs)