[U-Boot] global variables from comon/lcd.c

[Wolfgang Denk]

Dear Jeroen,

In message <50E86DFC.20304 at myspectrum.nl> you wrote:
> 
> While looking at the common/lcd.c I fail to understand why it declares
> and uses global variables like lcd_color_fg, lcd_color_color_bg, lcd_base
> and relies on the drivers / boards to provide them, leading to code
> duplication. It also provides getters / setters for some of these variables.
> 
> To me it seems more logical to have these variables in lcd.c itself. This
> construction has been around since at least 2004 though, so I tend to
> think I am missing something.
> 
> Does someone know the reason why these variables are not part
> of lcd.c itself?

The code has gone through a number of more or heavy restructuring, so
it's difficult to tell what was the original design, and which might
just be incomplete cleanup or similar.

Fact is, that lcd_color_fg and lcd_color_color_bg are nowhere used
outside common/lcd.c - with a single exception: drivers/video/tegra.c
does a

	color ^= lcd_color_fg;

once - but this should be trivial to fix by changing it into

	color ^= lcd_getfgcolor();

Hm...  guess I should submit a cleanup patch :-)

Best regards,

Wolfgang Denk

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