Re: 2.5.63: 'Debug: sleeping function called from illegal context

[Manfred Spraul]

This is a MIME-formatted message.  If you see this text it means that your
E-mail software does not support MIME-formatted messages.

--=_courier-1072-1046618852-0001-2
Content-Type: text/plain; charset=iso-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

Alan wrote:

>Unfortunately ten years ago someone created 'register_and_activate_irq'
>calling it 'register_irq', and it hasn't yet been fixed.
>  
>
Then it's time to fix that.

I would propose something like the attached patch - it handles all archs 
that support disable_irq on an unregistered interrupt. The remaining 
arch [which one, btw] must implement request_irq_disabled().

--
    Manfred

--=_courier-1072-1046618852-0001-2
Content-Type: text/plain; name=patch-rqd; charset=iso-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
 filename="patch-rqd"

// $Header$
// Kernel Version:
//  VERSION = 2
//  PATCHLEVEL = 5
//  SUBLEVEL = 63
//  EXTRAVERSION =
--- 2.5/include/linux/interrupt.h	2002-11-26 17:25:18.000000000 +0100
+++ build-2.5/include/linux/interrupt.h	2003-03-02 15:48:40.000000000 +0100
@@ -23,6 +23,9 @@
 extern int request_irq(unsigned int,
 		       void (*handler)(int, void *, struct pt_regs *),
 		       unsigned long, const char *, void *);
+extern int request_irq_disabled(unsigned int,
+		       void (*handler)(int, void *, struct pt_regs *),
+		       unsigned long, const char *, void *);
 extern void free_irq(unsigned int, void *);
 
 /*
--- 2.5/kernel/ksyms.c	2003-02-26 19:08:44.000000000 +0100
+++ build-2.5/kernel/ksyms.c	2003-03-02 15:54:06.000000000 +0100
@@ -404,6 +404,7 @@
 EXPORT_SYMBOL(add_timer);
 EXPORT_SYMBOL(del_timer);
 EXPORT_SYMBOL(request_irq);
+EXPORT_SYMBOL(request_irq_disabled);
 EXPORT_SYMBOL(free_irq);
 EXPORT_SYMBOL(irq_stat);
 
diff -urN --exclude='*.cmd' --exclude crc32table.h --exclude '*.orig' 2.5/lib/irq.c build-2.5/lib/irq.c
--- 2.5/lib/irq.c	1970-01-01 01:00:00.000000000 +0100
+++ build-2.5/lib/irq.c	2003-03-02 16:10:58.000000000 +0100
@@ -0,0 +1,39 @@
+/*
+ *  linux/lib/irq.c: arch independant helper functions for irq handling.
+ *
+ *  Copyright (C) 2003 Manfred Spraul
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/interrupt.h>
+
+#ifndef __HAVE_ARCH_REQUEST_IRQ_DISABLED
+int request_irq_disabled(unsigned int irq, 
+		void (*handler)(int, void *, struct pt_regs *),
+		unsigned long irqflags, 
+		const char * devname,
+		void *dev_id)
+{
+	int retval;
+	disable_irq(irq);
+	retval = request_irq(irq, handler, irqflags, devname, dev_id);
+	if (retval < 0)
+		enable_irq(irq);
+	return retval;
+}
+#endif
diff -urN --exclude='*.cmd' --exclude crc32table.h --exclude '*.orig' 2.5/lib/Makefile build-2.5/lib/Makefile
--- 2.5/lib/Makefile	2003-02-26 19:08:44.000000000 +0100
+++ build-2.5/lib/Makefile	2003-03-02 15:54:30.000000000 +0100
@@ -10,7 +10,7 @@
 
 obj-y := errno.o ctype.o string.o vsprintf.o brlock.o cmdline.o \
 	 bust_spinlocks.o rbtree.o radix-tree.o dump_stack.o \
-	 kobject.o idr.o
+	 kobject.o idr.o irq.o
 
 obj-$(CONFIG_RWSEM_GENERIC_SPINLOCK) += rwsem-spinlock.o
 obj-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += rwsem.o

--=_courier-1072-1046618852-0001-2--