From patchwork Wed Aug 16 13:55:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 13355223 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 38C61C001E0 for ; Wed, 16 Aug 2023 13:57:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235528AbjHPN43 (ORCPT ); Wed, 16 Aug 2023 09:56:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36912 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244037AbjHPN4A (ORCPT ); Wed, 16 Aug 2023 09:56:00 -0400 Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 0DAEA1FCE for ; Wed, 16 Aug 2023 06:55:58 -0700 (PDT) X-IronPort-AV: E=Sophos;i="6.01,177,1684767600"; d="scan'208";a="176786537" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 16 Aug 2023 22:55:58 +0900 Received: from localhost.localdomain (unknown [10.226.92.162]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 3470F420C318; Wed, 16 Aug 2023 22:55:55 +0900 (JST) From: Biju Das To: Liam Girdwood , Mark Brown Cc: Biju Das , Geert Uytterhoeven , Prabhakar Mahadev Lad , linux-renesas-soc@vger.kernel.org, stable@kernel.org Subject: [PATCH 1/2] regulator: raa215300: Fix resource leak in case of error Date: Wed, 16 Aug 2023 14:55:49 +0100 Message-Id: <20230816135550.146657-2-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230816135550.146657-1-biju.das.jz@bp.renesas.com> References: <20230816135550.146657-1-biju.das.jz@bp.renesas.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org The clk_register_clkdev() allocates memory by calling vclkdev_alloc() and this memory is not freed in the error path. Similarly, resources allocated by clk_register_fixed_rate() are not freed in the error path. Fix these issues by using devm_clk_hw_register_fixed_rate() and devm_clk_hw_register_clkdev(). After this, the static variable clk is not needed. Replace it with  local variable hw in probe() and drop calling clk_unregister_fixed_rate() from raa215300_rtc_unregister_device(). Fixes: 7bce16630837 ("regulator: Add Renesas PMIC RAA215300 driver") Cc: stable@kernel.org Signed-off-by: Biju Das --- drivers/regulator/raa215300.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/regulator/raa215300.c b/drivers/regulator/raa215300.c index 848a03a2fbd4..898f53cac02c 100644 --- a/drivers/regulator/raa215300.c +++ b/drivers/regulator/raa215300.c @@ -38,8 +38,6 @@ #define RAA215300_REG_BLOCK_EN_RTC_EN BIT(6) #define RAA215300_RTC_DEFAULT_ADDR 0x6f -static struct clk *clk; - static const struct regmap_config raa215300_regmap_config = { .reg_bits = 8, .val_bits = 8, @@ -49,10 +47,6 @@ static const struct regmap_config raa215300_regmap_config = { static void raa215300_rtc_unregister_device(void *data) { i2c_unregister_device(data); - if (!clk) { - clk_unregister_fixed_rate(clk); - clk = NULL; - } } static int raa215300_clk_present(struct i2c_client *client, const char *name) @@ -130,10 +124,16 @@ static int raa215300_i2c_probe(struct i2c_client *client) u32 addr = RAA215300_RTC_DEFAULT_ADDR; struct i2c_board_info info = {}; struct i2c_client *rtc_client; + struct clk_hw *hw; ssize_t size; - clk = clk_register_fixed_rate(NULL, clk_name, NULL, 0, 32000); - clk_register_clkdev(clk, clk_name, NULL); + hw = devm_clk_hw_register_fixed_rate(dev, clk_name, NULL, 0, 32000); + if (IS_ERR(hw)) + return PTR_ERR(hw); + + ret = devm_clk_hw_register_clkdev(dev, hw, clk_name, NULL); + if (ret) + return dev_err_probe(dev, ret, "Failed to initialize clkdev\n"); if (np) { int i;