From: Wandun Chen <chenwandun1@gmail.com>
To: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
zhaomeijing@lixiang.com
Cc: robh@kernel.org, saravanak@kernel.org
Subject: [PATCH v2 2/3] of: reserved_mem: clean up redundant alloc_reserved_mem_array() call
Date: Tue, 19 May 2026 16:24:26 +0800 [thread overview]
Message-ID: <20260519082427.4181476-3-chenwandun@lixiang.com> (raw)
In-Reply-To: <20260519082427.4181476-1-chenwandun@lixiang.com>
If total_reserved_mem_cnt is 0 after fdt_scan_reserved_mem(), there
is no entry to save, alloc_reserved_mem_array() has nothing to do.
Just skip it.
Signed-off-by: Wandun Chen <chenwandun@lixiang.com>
---
drivers/of/of_reserved_mem.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
index 7856dc857d65..462e7c3078a3 100644
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -270,6 +270,9 @@ void __init fdt_scan_reserved_mem_late(void)
return;
}
+ if (!total_reserved_mem_cnt)
+ return;
+
/* Attempt dynamic allocation of a new reserved_mem array */
alloc_reserved_mem_array();
--
2.43.0
next prev parent reply other threads:[~2026-05-19 8:24 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-19 8:24 [PATCH v2 0/3] of: reserved_mem: fixes and cleanups Wandun Chen
2026-05-19 8:24 ` [PATCH v2 1/3] of: reserved_mem: avoid unnecessary memory allocation when __reserved_mem_check_root() fails Wandun Chen
2026-05-20 7:44 ` Krzysztof Kozlowski
2026-05-20 8:16 ` Wandun
2026-06-01 23:06 ` Rob Herring
2026-06-02 1:37 ` Wandun
2026-05-19 8:24 ` Wandun Chen [this message]
2026-05-19 8:24 ` [PATCH v2 3/3] of: reserved_mem: only support one <base size> entry in reg property Wandun Chen
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