[Letux-kernel] [PATCH] Kernel debugging: omap: print warning if CONFIG_DEBUG_LL is enabled

Tony Lindgren tony at atomide.com
Wed Nov 8 23:27:55 CET 2017


* H. Nikolaus Schaller <hns at goldelico.com> [171108 21:32]:
> commit d2b310b0234c ("ARM: debug: Use generic 8250 debug_ll for omap2 and omap3/4/5 common uarts")
> commit fc23beb8a577 ("ARM: debug: Use generic 8250 debug_ll for omap3/4/5")
> 
> switched to generic 8250 debug_ll code which seems to be incompatible
> with at least OMAP5 boards (OMAP5EVM, Pyra) if CONFIG_DEBUG_LL is
> still enabled in some legacy defconfig. Since this is very hard to
> relate to these patches and difficult to identify, let's have the
> compiler emit a warning.

Hmm the issue is the existing values in .config as Kconfig.debug
does default XXX if DEBUG_XXX, right?

I think we have this issue in general if you enable DEBUG_LL for
a SoC, then enable it for another SoC using the same .config?

Regards,

Tony


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