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Gmane
From: Andrew Morton <akpm <at> linux-foundation.org>
Subject: Re: linux-next: Tree for July 30
Newsgroups: gmane.linux.kernel.input
Date: Thursday 31st July 2008 19:13:08 UTC (over 9 years ago)
On Thu, 31 Jul 2008 14:54:52 -0400
Dmitry Torokhov  wrote:

> > IOW, if the change responsible for this makes it to the mainline
kernel, it
> > will be considered as a regression.
> > 
> 
> Like I said, I don't agree.

It really really doesn't matter what the causes are or which piece of
code is at fault or anything else like that.

What _does_ matter is that people's stuff will break.  Apparently lots
of people's.  That's a problem.  A _practical_ problem.  Can we
pleeeeeeze be practical and find some way of preventing it?

I assume this is the commit?


commit 03bac96fae0efdb25e2059e5accbe4f3ee6328dd
Author: Dmitry Torokhov 
Date:   Mon Jun 23 10:47:34 2008 -0400

    Input: expand keycode space
    
    Expand the number of potential key codes from 512 to 768 since people
    are coming up with more and more keys.
    
    Signed-off-by: Dmitry Torokhov 

diff --git a/include/linux/input.h b/include/linux/input.h
index a5802c9..7fae1de 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -579,7 +579,7 @@ struct input_absinfo {
 
 /* We avoid low common keys in module aliases so they don't get huge. */
 #define KEY_MIN_INTERESTING	KEY_MUTE
-#define KEY_MAX			0x1ff
+#define KEY_MAX			0x2ff
 #define KEY_CNT			(KEY_MAX+1)
 
 /*
diff --git a/include/linux/mod_devicetable.h
b/include/linux/mod_devicetable.h
index c4db582..0dddfa4 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -274,7 +274,7 @@ struct pcmcia_device_id {
 /* Input */
 #define INPUT_DEVICE_ID_EV_MAX		0x1f
 #define INPUT_DEVICE_ID_KEY_MIN_INTERESTING	0x71
-#define INPUT_DEVICE_ID_KEY_MAX		0x1ff
+#define INPUT_DEVICE_ID_KEY_MAX		0x2ff
 #define INPUT_DEVICE_ID_REL_MAX		0x0f
 #define INPUT_DEVICE_ID_ABS_MAX		0x3f
 #define INPUT_DEVICE_ID_MSC_MAX		0x07


I'm unable to work out how necessary this change is?


Please: what proportion of the existing X installations do you expect will
be affected by this?

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