Re: [PATCH] [TRIVIAL] 8250_hp300: Fix warning typo 'CONFIG_8250'

From: Geert Uytterhoeven
Date: Wed Nov 09 2011 - 14:52:39 EST


Hi Paul,

On Tue, Nov 8, 2011 at 10:34, Paul Bolle <pebolle@xxxxxxxxxx> wrote:
> On Tue, 2011-11-08 at 10:26 +0100, Jiri Kosina wrote:
>> On Mon, 7 Nov 2011, Paul Bolle wrote:
>> > 1) If SERIAL_8250_HP300 is set but neither HPDCA nor HPAPCI are set we
>> > end up with an elaborate nop, don't we? Initialization should always
>> > fail in that case. So effectively SERIAL_8250_HP300 depends on HPDCA
>> > and/or HPAPCI. Was there perhaps some problem in translating that
>> > dependency into a Kconfig dependency?
>
> [...]
>
>> > --- a/drivers/tty/serial/8250_hp300.c
>> > +++ b/drivers/tty/serial/8250_hp300.c
>> > @@ -21,7 +21,7 @@
>> > Â#include "8250.h"
>> >
>> > Â#if !defined(CONFIG_HPDCA) && !defined(CONFIG_HPAPCI)
>> > -#warning CONFIG_8250 defined but neither CONFIG_HPDCA nor CONFIG_HPAPCI defined, are you sure?
>> > +#warning CONFIG_SERIAL_8250 defined but neither CONFIG_HPDCA nor CONFIG_HPAPCI defined, are you sure?
>> > Â#endif
>>
>> What is the point of this warning anyway? Shouldn't everything necessary
>> be taken care of by Kconfig rules?
>
> That's exactly what I'm trying to find out with my questions (aimed at
> the m68k people, see 1) above).

I have this reminder in my local tree:

diff --git a/arch/m68k/Kconfig.devices b/arch/m68k/Kconfig.devices
index 6033f5d..354ce91 100644
--- a/arch/m68k/Kconfig.devices
+++ b/arch/m68k/Kconfig.devices
@@ -109,6 +109,7 @@ config MULTIFACE_III_TTY
To compile this driver as a module, choose M here.

config HPDCA
+ # FIXME Should be bool and select SERIAL_8250_HP300?
tristate "HP DCA serial support"
depends on DIO && SERIAL_8250
help
@@ -116,6 +117,7 @@ config HPDCA
machine, say Y here.

config HPAPCI
+ # FIXME Should be bool and select SERIAL_8250_HP300?
tristate "HP APCI serial support"
depends on HP300 && SERIAL_8250 && EXPERIMENTAL
help

However, if these two options are bool, SERIAL_8250_HP300 can never
be m anymore.

Ah, if we just kill SERIAL_8250_HP300, we can put in the Makefile:

obj-$(CONFIG_HPDCA) += 8250_hp300.o
obj-$(CONFIG_HPAPCI) += 8250_hp300.o

Does that make sense?

Gr{oetje,eeting}s,

            Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
             Â Â -- Linus Torvalds
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/