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Now that all System RAM resource entries have been initialized
to IORESOURCE_SYSTEM_RAM type, change walk_system_ram_res() and
walk_system_ram_range() to call find_next_iomem_res() by setting
@res.flags to IORESOURCE_SYSTEM_RAM and @name to NULL. With this
change, they walk through the iomem table to find System RAM
ranges without the need to do strcmp() on the resource names.

No functional change is made to the interfaces.
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
[ Boris: fixup comments. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jakub Sitnicki <jsitnicki@gmail.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: linux-arch@vger.kernel.org
Cc: linux-mm <linux-mm@kvack.org>
Link: http://lkml.kernel.org/r/1453841853-11383-11-git-send-email-bp@alien8.de

Signed-off-by: Ingo Molnar <mingo@kernel.org>