linux-kernel - [PATCH] tpm: Use of_reserved_mem_region_to

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Message-ID: <20250703183424.2073075-1-robh@kernel.org>
Date: Thu,  3 Jul 2025 13:34:24 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Peter Huewe <peterhuewe@....de>,
	Jarkko Sakkinen <jarkko@...nel.org>,
	Jason Gunthorpe <jgg@...pe.ca>
Cc: linux-integrity@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] tpm: Use of_reserved_mem_region_to_resource() for "memory-region"

Use the newly added of_reserved_mem_region_to_resource() function to
handle "memory-region" properties.

Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
 drivers/char/tpm/eventlog/of.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/char/tpm/eventlog/of.c b/drivers/char/tpm/eventlog/of.c
index 930fe43d5daf..92cec9722ee4 100644
--- a/drivers/char/tpm/eventlog/of.c
+++ b/drivers/char/tpm/eventlog/of.c
@@ -24,16 +24,10 @@
 
 static int tpm_read_log_memory_region(struct tpm_chip *chip)
 {
-	struct device_node *node;
 	struct resource res;
 	int rc;
 
-	node = of_parse_phandle(chip->dev.parent->of_node, "memory-region", 0);
-	if (!node)
-		return -ENODEV;
-
-	rc = of_address_to_resource(node, 0, &res);
-	of_node_put(node);
+	rc = of_reserved_mem_region_to_resource(chip->dev.parent->of_node, 0, &res);
 	if (rc)
 		return rc;
 
-- 
2.47.2