Re: [PATCH] Disable deprecated rfkill-input driver

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Hi,

On 11-01-16 20:21, Josh Boyer wrote:
On Sun, Jan 10, 2016 at 7:54 AM, Bastien Nocera <bnocera@xxxxxxxxxx> wrote:
From: Bastien Nocera <hadess@xxxxxxxxxx>

As noted in https://www.kernel.org/doc/Documentation/rfkill.txt
rfkill-input is deprecated, and rfkill keys are handled in user-space.

That may be what the document says, but the Kconfig at least seems to
imply something else.

---
  config-generic | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/config-generic b/config-generic
index 055d5d2..cbe4571 100644
--- a/config-generic
+++ b/config-generic
@@ -1381,7 +1381,7 @@ CONFIG_LWTUNNEL=y

  CONFIG_RFKILL=m
  CONFIG_RFKILL_GPIO=m
-CONFIG_RFKILL_INPUT=y
+CONFIG_RFKILL_INPUT=n

There's a couple things wrong here.  First, it should be:

# CONFIG_RFKILL_INPUT is not set

I can't remember if Kconfig accepts =n, but I don't think it does for
whatever reason.

The second thing wrong here is that you can set this in
config-generic, but it doesn't matter because the Kconfig section for
this is:

config RFKILL_INPUT
         bool "RF switch input support" if EXPERT
         depends on RFKILL
         depends on INPUT = y || RFKILL = INPUT
         default y if !EXPERT

which basically means that unless we have CONFIG_EXPERT set, you can't
override it from the default.

AFAIK Kconfig, that is not true, adding

# CONFIG_RFKILL_INPUT is not set

Should still override the default, a default is just that a default, not
a hard select. Making a default conditional on EXPERT is a bit weird,
it just means that if EXPERT is set, there is no default.

Regards,

Hans
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