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Commit 226e9a93 authored by Ingo Molnar's avatar Ingo Molnar Committed by Thomas Gleixner
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x86: ioremap fix failing nesting check 



Mika Kukkonen noticed that the nesting check in early_iounmap() is not
actually done.

Reported-by: default avatarMika Kukkonen <mikukkon@srv1-m700-lanp.koti>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Cc: torvalds@linux-foundation.org
Cc: arjan@linux.intel.com
Cc: mikukkon@iki.fi
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent e8a496ac

arch/x86/mm/ioremap.c

+3 −2
Original line number Diff line number Diff line
@@ -593,10 +593,11 @@ void __init early_iounmap(void *addr, unsigned long size) 
	unsigned long offset;

	unsigned int nrpages;

	enum fixed_addresses idx;

	unsigned int nesting;

	int nesting;



	nesting = --early_ioremap_nested;

	WARN_ON(nesting < 0);

	if (WARN_ON(nesting < 0))

		return;



	if (early_ioremap_debug) {

		printk(KERN_INFO "early_iounmap(%p, %08lx) [%d]\n", addr,