From mboxrd@z Thu Jan 1 00:00:00 1970 From: federico ferri Subject: [PATCH] input: change SysRq keycode for systems without SysRq key Date: Sun, 15 Jul 2007 19:04:05 +0200 Message-ID: <469A5385.6030402@inwind.it> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Return-path: Sender: owner-linux-input@atrey.karlin.mff.cuni.cz List-Help: List-Owner: List-Post: List-Unsubscribe: To: torvalds@linux-foundation.org Cc: dmitry.torokhov@gmail.com, linux-input@atrey.karlin.mff.cuni.cz, trivial@kernel.org List-Id: linux-input@vger.kernel.org this patch adds an entry in Kconfig after 'config MAGIC_SYSRQ' which asks for a different keycode (replacing also KEY_SYSRQ with CONFIG_MAGIC_SYSRQ_KEYCODE in char/keyboard.c) it was tested on some USB keyboards (Microsoft and Apple USB keyboards, and it works) I sumbitted this patch two years ago, but it was ignored. I think this patch is very important, even to a non-developer (SysRq-k is very helpful when testing unstable software/drivers) [for 2.6] Signed-off-by: Federico Ferri --- diff -uprN linux.orig/drivers/char/keyboard.c linux/drivers/char/keyboard.c --- linux.orig/drivers/char/keyboard.c 2005-07-09 21:47:50.000000000 +0200 +++ linux/drivers/char/keyboard.c 2005-07-10 14:42:34.000000000 +0200 @@ -1081,7 +1087,7 @@ static void kbd_keycode(unsigned int key printk(KERN_WARNING "keyboard.c: can't emulate rawmode for keycode %d\n", keycode); #ifdef CONFIG_MAGIC_SYSRQ /* Handle the SysRq Hack */ - if (keycode == KEY_SYSRQ && (sysrq_down || (down == 1 && sysrq_alt))) { + if (keycode == CONFIG_MAGIC_SYSRQ_KEYCODE && (sysrq_down || (down == 1 && sysrq_alt))) { sysrq_down = down; return; } diff -uprN linux.orig/lib/Kconfig.debug linux/lib/Kconfig.debug --- linux.orig/lib/Kconfig.debug 2005-07-09 21:47:22.000000000 +0200 +++ linux/lib/Kconfig.debug 2005-07-09 21:50:44.000000000 +0200 @@ -28,6 +28,16 @@ config MAGIC_SYSRQ send a BREAK and then within 5 seconds a command keypress. The keys are documented in . Don't say Y unless you really know what this hack does. + +config MAGIC_SYSRQ_KEYCODE + int + prompt "Change SysRq key-code" if MAGIC_SYSRQ + default 99 + depends on MAGIC_SYSRQ + help + If your keyboard doesn't have a SysRq key (also labeled PrintScr), + you can specify another keycode which should act as SysRq. + Default is 99 (KEY_SYSRQ). + You can find this number using programs like evtest, or (maybe) + showkey. config LOG_BUF_SHIFT int "Kernel log buffer size (16 => 64KB, 17 => 128KB)" if DEBUG_KERNEL