linux-kernel - [PATCH] of: of_reserved_mem: clean-up reserved memory with no-map

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Date: Sun, 28 Apr 2024 21:55:05 +0900
From: skseofh@...il.com
To: robh@...nel.org,
	saravanak@...gle.com,
	rppt@...nel.org
Cc: devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Daero Lee <daero_le.lee@...sung.com>
Subject: [PATCH] of: of_reserved_mem: clean-up reserved memory with no-map

From: Daero Lee <daero_le.lee@...sung.com>

In early_init_dt_reserve_memory we only add memory w/o no-map flag to
memblock.reserved. But we need to add memory w/ no-map flag to
memblock.reserved, because NOMAP and memblock.reserved are semantically
different.

Signed-off-by: Daero Lee <daero_le.lee@...sung.com>
---
 drivers/of/of_reserved_mem.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
index 8236ecae2953..1c916da8adaf 100644
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -91,7 +91,8 @@ static int __init early_init_dt_reserve_memory(phys_addr_t base,
 		    memblock_is_region_reserved(base, size))
 			return -EBUSY;
 
-		return memblock_mark_nomap(base, size);
+		if (memblock_mark_nomap(base, size))
+			return;
 	}
 	return memblock_reserve(base, size);
 }
-- 
2.25.1