From nobody Thu Dec 18 19:25:07 2025 Received: from mail-ot1-f46.google.com (mail-ot1-f46.google.com [209.85.210.46]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7A7A94D8DC for ; Tue, 18 Jun 2024 20:45:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.46 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718743529; cv=none; b=cr/9t8WkTiAOFnIGAsQy4ZQy8+cLUhSWEsN4/rBlGDpYRtJNds8KDd/QWPaFswM3H3zIMQN1t6EPiWt3pP1E8z0Qn3eaDceR708UlL9fUB12RBhrlp2wHZMB/Q5I7ogqGxfbc1FggKob7OKs+Lt9935ccUSKO7RL7x+/Dlqe3No= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718743529; c=relaxed/simple; bh=sT0sL+RgnVg+AcQBnBOs3VMjWsZ2hzrqXKz/8cJCc5Q=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Wg85xIMbI0W6HOkwt/3d/qib5KSnAxcwsVRrZbq7m0E6qZmkno13x6uHIYAlTcXDG+gxcVDDmB6G6psZY4IyEqaC8wYQ7Azj2DQifbb4h+a6lfBKrm7vB8mHdgLRZephhIQrNTsiUzn+ZdhC+w2pCUS2/Z7ASLZv9YoTEZFpxns= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=tFfjpUMC; arc=none smtp.client-ip=209.85.210.46 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="tFfjpUMC" Received: by mail-ot1-f46.google.com with SMTP id 46e09a7af769-6f977acff19so2667199a34.3 for ; Tue, 18 Jun 2024 13:45:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1718743526; x=1719348326; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=0aRxOAD2Qgk5Lly7g3t86NVGFyqjyCN/MyLZiIAVgHs=; b=tFfjpUMCoTEIxTtYITK2ouVif7oQGDFsXuGPjH5Z2yG/pst/U9bLYzawApH1QPvjY+ jMH2f/umE6iK9aSiNKWSAOitylJDmkzJ4+oX+Qgd3OUhRVNVshWc0Sv352thIostt54N +d1INApBiKOKOCKxVeG/Sy7A90BACt+TumHrMNxkuf+6To+2CyQS1/5iO2XkbNw5ydqG rE8mF+AAo1xoil1fssubZ2Dk2XY+LJVnf0gzDUq6iGBYMyVv6hGM9OwTJuy0B8IVpVEb nIq+TQ0GR4aMTEq7236TuTD5hrptq08T6dzcVpXoxvwB+4xuxnUmn+iUmOCc4I3zY2fA /oVA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718743526; x=1719348326; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=0aRxOAD2Qgk5Lly7g3t86NVGFyqjyCN/MyLZiIAVgHs=; b=NTvJFMiB2lrzPOBXg+xvfwsqOTUw3KdjIKfzg4mVuZXUU+SXrBEBLNqfltFbaKt/r8 ljsRfCBLcRitk4tPt/ajQKEDhV4cK9jsrs2IX7b83pvD/1ERLN2MZlr8ePrKQ9Oz42eV ZMg+9d09HR45A0mnzregHQjSf1ONf5dJjB73hw4O89W683Tm/7nkF8M0E50tCJ6iGZTX qWmqRYNc1zSI62wJnjl7atELQ4saG+naAmiscKiCOw5zQh2Bbk4EEynw2aiLM8gv5Q2Z z8JzdrbODsL+s2GtlstvYRt16wG9p8mQwTTGkIJdRDutMF4JAKZkPQpdLrz7MZeKqzN9 QWCw== X-Forwarded-Encrypted: i=1; AJvYcCU/n/Q2Ob0f++c334Tr/X+IUyLJnYl3XeCEitsNwW1NCV5g1Bk0+F8OJQp0redijgNEUUJe6SuKvTZI+tYUEBTANIM6BPuhbR+7/s40 X-Gm-Message-State: AOJu0YwiToa1mNWzZlKGd5VKTURF0doHTTEWMD5LeJlaxPtqdqlWdLRB 7u8wnZKUFrJCqoBzqZseaue1Dg8D8O8YfPl26PbPfkMy3HdaCJWx3w2mFjJhJu4= X-Google-Smtp-Source: AGHT+IFsyuXPTcRk/B3lUM1O8/TQZfkRs+GDfXqj2NsRA9yWpG9ZWVrUspoi5rnxH+NBKKi8Gu9VmQ== X-Received: by 2002:a05:6830:1d91:b0:6f9:c989:261c with SMTP id 46e09a7af769-700766349damr883708a34.33.1718743526611; Tue, 18 Jun 2024 13:45:26 -0700 (PDT) Received: from localhost ([136.62.192.75]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-6fb97051e68sm1692599a34.80.2024.06.18.13.45.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Jun 2024 13:45:26 -0700 (PDT) From: Sam Protsenko To: =?UTF-8?q?=C5=81ukasz=20Stelmach?= , Krzysztof Kozlowski , Rob Herring , Conor Dooley Cc: Anand Moon , Olivia Mackall , Herbert Xu , Alim Akhtar , linux-samsung-soc@vger.kernel.org, linux-crypto@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 3/7] hwrng: exynos: Use devm_clk_get_enabled() to get the clock Date: Tue, 18 Jun 2024 15:45:19 -0500 Message-Id: <20240618204523.9563-4-semen.protsenko@linaro.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240618204523.9563-1-semen.protsenko@linaro.org> References: <20240618204523.9563-1-semen.protsenko@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Use devm_clk_get_enabled() helper instead of calling devm_clk_get() and then clk_prepare_enable(). It simplifies the error handling and makes the code more compact. Also use dev_err_probe() to handle possible -EPROBE_DEFER errors if the clock is not available yet. Signed-off-by: Sam Protsenko Reviewed-by: Anand Moon Reviewed-by: Krzysztof Kozlowski --- Changes in v2: - No changes (it's a new patch added in v2) drivers/char/hw_random/exynos-trng.c | 21 ++++----------------- 1 file changed, 4 insertions(+), 17 deletions(-) diff --git a/drivers/char/hw_random/exynos-trng.c b/drivers/char/hw_random/= exynos-trng.c index 88a5088ed34d..91c210d80a3d 100644 --- a/drivers/char/hw_random/exynos-trng.c +++ b/drivers/char/hw_random/exynos-trng.c @@ -134,32 +134,23 @@ static int exynos_trng_probe(struct platform_device *= pdev) goto err_pm_get; } =20 - trng->clk =3D devm_clk_get(&pdev->dev, "secss"); + trng->clk =3D devm_clk_get_enabled(&pdev->dev, "secss"); if (IS_ERR(trng->clk)) { - ret =3D PTR_ERR(trng->clk); - dev_err(&pdev->dev, "Could not get clock.\n"); - goto err_clock; - } - - ret =3D clk_prepare_enable(trng->clk); - if (ret) { - dev_err(&pdev->dev, "Could not enable the clk.\n"); + ret =3D dev_err_probe(&pdev->dev, PTR_ERR(trng->clk), + "Could not get clock"); goto err_clock; } =20 ret =3D devm_hwrng_register(&pdev->dev, &trng->rng); if (ret) { dev_err(&pdev->dev, "Could not register hwrng device.\n"); - goto err_register; + goto err_clock; } =20 dev_info(&pdev->dev, "Exynos True Random Number Generator.\n"); =20 return 0; =20 -err_register: - clk_disable_unprepare(trng->clk); - err_clock: pm_runtime_put_noidle(&pdev->dev); =20 @@ -171,10 +162,6 @@ static int exynos_trng_probe(struct platform_device *p= dev) =20 static void exynos_trng_remove(struct platform_device *pdev) { - struct exynos_trng_dev *trng =3D platform_get_drvdata(pdev); - - clk_disable_unprepare(trng->clk); - pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); } --=20 2.39.2