Patch "of: alloc anywhere from memblock if range not specified" has been added to the 4.5-stable tree

Patch "of: alloc anywhere from memblock if range not specified" has been added to the 4.5-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    of: alloc anywhere from memblock if range not specified

to the 4.5-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     of-alloc-anywhere-from-memblock-if-range-not-specified.patch
and it can be found in the queue-4.5 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From e53b50c0cbe392c946807abf7d07615a3c588642 Mon Sep 17 00:00:00 2001
From: Vinayak Menon <vinmenon@codeaurora.org>
Date: Mon, 22 Feb 2016 19:15:44 +0530
Subject: of: alloc anywhere from memblock if range not specified

From: Vinayak Menon <vinmenon@codeaurora.org>

commit e53b50c0cbe392c946807abf7d07615a3c588642 upstream.

early_init_dt_alloc_reserved_memory_arch passes end as 0 to
__memblock_alloc_base, when limits are not specified. But
__memblock_alloc_base takes end value of 0 as MEMBLOCK_ALLOC_ACCESSIBLE
and limits the end to memblock.current_limit. This results in regions
never being placed in HIGHMEM area, for e.g. CMA.
Let __memblock_alloc_base allocate from anywhere in memory if limits are
not specified.

Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/of/of_reserved_mem.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -32,11 +32,13 @@ int __init __weak early_init_dt_alloc_re
 	phys_addr_t align, phys_addr_t start, phys_addr_t end, bool nomap,
 	phys_addr_t *res_base)
 {
+	phys_addr_t base;
 	/*
 	 * We use __memblock_alloc_base() because memblock_alloc_base()
 	 * panic()s on allocation failure.
 	 */
-	phys_addr_t base = __memblock_alloc_base(size, align, end);
+	end = !end ? MEMBLOCK_ALLOC_ANYWHERE : end;
+	base = __memblock_alloc_base(size, align, end);
 	if (!base)
 		return -ENOMEM;
 


Patches currently in stable-queue which might be from vinmenon@codeaurora.org are

queue-4.5/of-alloc-anywhere-from-memblock-if-range-not-specified.patch