linux-kernel - [PATCH 3/6] crypto: artpec6 - Simplify with of_device_get_match

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Message-Id: <20251106-crypto-of-match-v1-3-36b26cd35cff@linaro.org>
Date: Thu, 06 Nov 2025 17:31:55 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Olivia Mackall <olivia@...enic.com>, 
 Herbert Xu <herbert@...dor.apana.org.au>, 
 Florian Fainelli <florian.fainelli@...adcom.com>, 
 Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>, 
 Ray Jui <rjui@...adcom.com>, Scott Branden <sbranden@...adcom.com>, 
 Jesper Nilsson <jesper.nilsson@...s.com>, 
 Lars Persson <lars.persson@...s.com>, 
 "David S. Miller" <davem@...emloft.net>, 
 Tom Lendacky <thomas.lendacky@....com>, John Allen <john.allen@....com>, 
 Srujana Challa <schalla@...vell.com>, 
 Bharat Bhushan <bbhushan2@...vell.com>
Cc: linux-crypto@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...s.com, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 3/6] crypto: artpec6 - Simplify with
 of_device_get_match_data()

Driver's probe function matches against driver's of_device_id table, so
of_match_node() can be simplified with of_device_get_match_data().

This requires changing the enum used in the driver match data entries to
non-zero, to be able to recognize error case of
of_device_get_match_data().

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 drivers/crypto/axis/artpec6_crypto.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/crypto/axis/artpec6_crypto.c b/drivers/crypto/axis/artpec6_crypto.c
index 75ee065da1ec..b0d45f5333ac 100644
--- a/drivers/crypto/axis/artpec6_crypto.c
+++ b/drivers/crypto/axis/artpec6_crypto.c
@@ -252,7 +252,7 @@ struct artpec6_crypto_dma_descriptors {
 };

 enum artpec6_crypto_variant {
-	ARTPEC6_CRYPTO,
+	ARTPEC6_CRYPTO = 1,
 	ARTPEC7_CRYPTO,
 };

@@ -2842,7 +2842,6 @@ MODULE_DEVICE_TABLE(of, artpec6_crypto_of_match);

 static int artpec6_crypto_probe(struct platform_device *pdev)
 {
-	const struct of_device_id *match;
 	enum artpec6_crypto_variant variant;
 	struct artpec6_crypto *ac;
 	struct device *dev = &pdev->dev;
@@ -2853,12 +2852,10 @@ static int artpec6_crypto_probe(struct platform_device *pdev)
 	if (artpec6_crypto_dev)
 		return -ENODEV;

-	match = of_match_node(artpec6_crypto_of_match, dev->of_node);
-	if (!match)
+	variant = of_device_get_match_data(dev);
+	if (!variant)
 		return -EINVAL;

-	variant = (enum artpec6_crypto_variant)match->data;
-
 	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base))
 		return PTR_ERR(base);

-- 
2.48.1