linux-kernel - [PATCH AUTOSEL 5.4 089/108] of: of_reserved_mem: Increase limit on number of reserved regions

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Date:   Sat, 11 Apr 2020 19:09:24 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Patrick Daly <pdaly@...eaurora.org>,
        "Isaac J . Manjarres" <isaacm@...eaurora.org>,
        Rob Herring <robh@...nel.org>, Sasha Levin <sashal@...nel.org>,
        devicetree@...r.kernel.org
Subject: [PATCH AUTOSEL 5.4 089/108] of: of_reserved_mem: Increase limit on number of reserved regions

From: Patrick Daly <pdaly@...eaurora.org>

[ Upstream commit 632c99084052aef1c9dcfe43d2720306026d6d21 ]

Certain SoCs need to support a large amount of reserved memory
regions. For example, Qualcomm's SM8150 SoC requires that 20
regions of memory be reserved for a variety of reasons (e.g.
loading a peripheral subsystem's firmware image into a
particular space).

When adding more reserved memory regions to cater to different
usecases, the remaining number of reserved memory regions--12
to be exact--becomes too small. Thus, double the existing
limit of reserved memory regions.

Signed-off-by: Patrick Daly <pdaly@...eaurora.org>
Signed-off-by: Isaac J. Manjarres <isaacm@...eaurora.org>
Signed-off-by: Rob Herring <robh@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/of/of_reserved_mem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
index 6bd610ee2cd73..1a84bc0d5fa80 100644
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -22,7 +22,7 @@
 #include <linux/slab.h>
 #include <linux/memblock.h>
 
-#define MAX_RESERVED_REGIONS	32
+#define MAX_RESERVED_REGIONS	64
 static struct reserved_mem reserved_mem[MAX_RESERVED_REGIONS];
 static int reserved_mem_count;
 
-- 
2.20.1