Commit 8808500f authored Dec 12, 2008 by Ingo Molnar

x86: soften multi-BAR mapping sanity check warning message

Impact: make debug warning less scary

The ioremap() time multi-BAR map warning has been causing false
positives:

  http://lkml.org/lkml/2008/12/10/432
  http://lkml.org/lkml/2008/12/11/136



So make it less scary by making it once-per-boot, by making it KERN_INFO
and by adding this text:

  "Info: mapping multiple BARs. Your kernel is fine."

Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 5f5db591

arch/x86/mm/ioremap.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -223,7 +223,8 @@ static void __iomem *__ioremap_caller(resource_size_t phys_addr,
		* Check if the request spans more than any BAR in the iomem resource
		* tree.
		*/
		WARN_ON(iomem_map_sanity_check(phys_addr, size));
		WARN_ONCE(iomem_map_sanity_check(phys_addr, size),
		KERN_INFO "Info: mapping multiple BARs. Your kernel is fine.");

		/*
		* Don't allow anybody to remap normal RAM that we're using..