linux-kernel - Re: [RESUBMIT] [PATCH] Use BIOS Keyboard variable to set Numlock

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Date:	Tue, 28 Feb 2012 10:14:07 +0100
From:	"Joshua C." <joshuacov@...glemail.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	linux-kernel@...r.kernel.org, Bodo Eggert <7eggert@....de>
Subject: Re: [RESUBMIT] [PATCH] Use BIOS Keyboard variable to set Numlock

2012/2/28 H. Peter Anvin <hpa@...or.com>:
> On 02/27/2012 04:08 PM, Joshua C. wrote:
>>
>> If so I'm not sure about it. We check the BIOS data area as defined
>> for IBM PCs (1981), so a fair amount of user should benefit from the
>> change. Those non-BIOS boots can set the numlock=0 and won't be
>> affected by this. I think this isa lot easier to implement than doing
>> it in the BIOS bootstrap code.
>>
>
> Here is a patch to query the BIOS state properly; if you could fill out
> the rest of the patch then we can merge this in easily enough.
>
>        -hpa

I think this should be the missing part:

@@ -1432,7 +1439,17 @@ int __init kbd_init(void)
 {
 	int i;
 	int error;
-
+	
+#ifdef CONFIG_KBD_DEFLEDS_PCBIOS
+	int KBD_DEFLEDS = 0;
+	char * bios_kbd_lock_status=boot_params.kbd_status
+	
+	/* Numlock status bit set? */
+	if ((*bios_kbd_lock_status & 0x20) && numlock)
+	KBD_DEFLEDS = 1 << VC_NUMLOCK;
+#endif
+	
         for (i = 0; i < MAX_NR_CONSOLES; i++) {
 		kbd_table[i].ledflagstate = KBD_DEFLEDS;
 		kbd_table[i].default_ledflagstate = KBD_DEFLEDS;
--
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