Re: [patch] fix magic sysrq on strange keyboards
- From: Andrew Morton <akpm@xxxxxxxx>
- Date: Thu, 18 May 2006 12:10:57 -0700
Pavel Machek <pavel@xxxxxxx> wrote:
Magic sysrq fails to work on many keyboards, particulary most of
notebook keyboards. This should help...
The idea is quite simple: Discard the SysRq break code if Alt is still
being held down. This way the broken keyboard can send the break code
(or the user with a normal keyboard can release the SysRq key) and the
kernel waits until the next key is pressed or the Alt key is released.
From: Fredrik Roubert <roubert@xxxxxxxxx>
Signed-off-by: Pavel Machek <pavel@xxxxxxx>
What kernel are you patching here?
index 5d84839..4602cf3 100644
--- a/drivers/char/keyboard.c
+++ b/drivers/char/keyboard.c
@@ -149,7 +149,8 @@ unsigned char kbd_sysrq_xlate[KEY_MAX +
"\206\207\210\211\212\000\000789-456+1" /* 0x40 - 0x4f */
"230\177\000\000\213\214\000\000\000\000\000\000\000\000\000\000" /* 0x50 - 0x5f */
"\r\000/"; /* 0x60 - 0x6f */
-static int was_sysrq;
+static int sysrq_down;
+static int sysrq_alt_use;
bix:/usr/src/linux-2.6.17-rc4> grep was_sysrq drivers/char/sysrq.c
bix:/usr/src/linux-2.6.17-rc4>
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