From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 497331DB153; Wed, 5 Feb 2025 14:44:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738766663; cv=none; b=N6I/YS+TKTFU8AVclT2wx2tFqfJU3/uQhjIeV+ElRjhgho9fFWgas9XUPKXjnfFE2lnnEPsp27vwkVLst+FwTFVJcAFBqWZjjouTuoq4hwxAUpCovRfMfPZLoCAFEskAjve8scu7gSK3V5UQURMRwk1fsRW/8PrqriJYjR2vEAw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738766663; c=relaxed/simple; bh=ODJxjznmWXrlkJ5+HO9qAL+jDZgRBvi2ZSFsREaJxM4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AAOOAxqv/XvTMkgPJLWjXY+9tBz3sEunA1V0xFvs3Mp3TWVIYw+j6te992aZl3+eAir+lH/pMLySUR+KHxZ/uxosneWPved0TtW9il6fQsO65JS7wHNBTA//XTPWYLvhrL9z3yzqpGCZBXDGk7BCkNlDocjMscn5+QLpfq5/7mY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=p+Sr3ci7; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="p+Sr3ci7" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 435F2C4CED1; Wed, 5 Feb 2025 14:44:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1738766662; bh=ODJxjznmWXrlkJ5+HO9qAL+jDZgRBvi2ZSFsREaJxM4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=p+Sr3ci7OoLQZzzARqsCXpuB3We7io3fnfnss/Kgnk0vSj3mJpCwdR2MmerlUFUuY IBx6SC3XBI0SXT2AU+NwZQTfCVDqgLbKJOUYl+2JBRf07vOT1v1hvQSYXZNe5smfJT gfwgFlA9rwYU08E1yYaFGXumAjZn5o4/40TC9OLM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mingwei Zheng , Jiasheng Jiang , Linus Walleij , Sasha Levin Subject: [PATCH 6.13 273/623] pinctrl: nomadik: Add check for clk_enable() Date: Wed, 5 Feb 2025 14:40:15 +0100 Message-ID: <20250205134506.672232418@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250205134456.221272033@linuxfoundation.org> References: <20250205134456.221272033@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.13-stable review patch. If anyone has any objections, please let me know. ------------------ From: Mingwei Zheng [ Upstream commit 5c4bfbb21dedf5d56a55cb0e129ccb1fd5083d14 ] Add check for the return value of clk_enable() to catch the potential error. Disable success clks in the error handling. Change return type of nmk_gpio_glitch_slpm_init casade. Fixes: 3a19805920f1 ("pinctrl: nomadik: move all Nomadik drivers to subdir") Signed-off-by: Mingwei Zheng Signed-off-by: Jiasheng Jiang Link: https://lore.kernel.org/20241206221618.3453159-1-zmw12306@gmail.com Signed-off-by: Linus Walleij Signed-off-by: Sasha Levin --- drivers/pinctrl/nomadik/pinctrl-nomadik.c | 35 ++++++++++++++++++----- 1 file changed, 28 insertions(+), 7 deletions(-) diff --git a/drivers/pinctrl/nomadik/pinctrl-nomadik.c b/drivers/pinctrl/nomadik/pinctrl-nomadik.c index f4f10c60c1d23..dcc662be08000 100644 --- a/drivers/pinctrl/nomadik/pinctrl-nomadik.c +++ b/drivers/pinctrl/nomadik/pinctrl-nomadik.c @@ -438,9 +438,9 @@ static void nmk_prcm_altcx_set_mode(struct nmk_pinctrl *npct, * - Any spurious wake up event during switch sequence to be ignored and * cleared */ -static void nmk_gpio_glitch_slpm_init(unsigned int *slpm) +static int nmk_gpio_glitch_slpm_init(unsigned int *slpm) { - int i; + int i, j, ret; for (i = 0; i < NMK_MAX_BANKS; i++) { struct nmk_gpio_chip *chip = nmk_gpio_chips[i]; @@ -449,11 +449,21 @@ static void nmk_gpio_glitch_slpm_init(unsigned int *slpm) if (!chip) break; - clk_enable(chip->clk); + ret = clk_enable(chip->clk); + if (ret) { + for (j = 0; j < i; j++) { + chip = nmk_gpio_chips[j]; + clk_disable(chip->clk); + } + + return ret; + } slpm[i] = readl(chip->addr + NMK_GPIO_SLPC); writel(temp, chip->addr + NMK_GPIO_SLPC); } + + return 0; } static void nmk_gpio_glitch_slpm_restore(unsigned int *slpm) @@ -923,7 +933,9 @@ static int nmk_pmx_set(struct pinctrl_dev *pctldev, unsigned int function, slpm[nmk_chip->bank] &= ~BIT(bit); } - nmk_gpio_glitch_slpm_init(slpm); + ret = nmk_gpio_glitch_slpm_init(slpm); + if (ret) + goto out_pre_slpm_init; } for (i = 0; i < g->grp.npins; i++) { @@ -940,7 +952,10 @@ static int nmk_pmx_set(struct pinctrl_dev *pctldev, unsigned int function, dev_dbg(npct->dev, "setting pin %d to altsetting %d\n", g->grp.pins[i], g->altsetting); - clk_enable(nmk_chip->clk); + ret = clk_enable(nmk_chip->clk); + if (ret) + goto out_glitch; + /* * If the pin is switching to altfunc, and there was an * interrupt installed on it which has been lazy disabled, @@ -988,6 +1003,7 @@ static int nmk_gpio_request_enable(struct pinctrl_dev *pctldev, struct nmk_gpio_chip *nmk_chip; struct gpio_chip *chip; unsigned int bit; + int ret; if (!range) { dev_err(npct->dev, "invalid range\n"); @@ -1004,7 +1020,9 @@ static int nmk_gpio_request_enable(struct pinctrl_dev *pctldev, find_nmk_gpio_from_pin(pin, &bit); - clk_enable(nmk_chip->clk); + ret = clk_enable(nmk_chip->clk); + if (ret) + return ret; /* There is no glitch when converting any pin to GPIO */ __nmk_gpio_set_mode(nmk_chip, bit, NMK_GPIO_ALT_GPIO); clk_disable(nmk_chip->clk); @@ -1058,6 +1076,7 @@ static int nmk_pin_config_set(struct pinctrl_dev *pctldev, unsigned int pin, unsigned long cfg; int pull, slpm, output, val, i; bool lowemi, gpiomode, sleep; + int ret; nmk_chip = find_nmk_gpio_from_pin(pin, &bit); if (!nmk_chip) { @@ -1116,7 +1135,9 @@ static int nmk_pin_config_set(struct pinctrl_dev *pctldev, unsigned int pin, output ? (val ? "high" : "low") : "", lowemi ? "on" : "off"); - clk_enable(nmk_chip->clk); + ret = clk_enable(nmk_chip->clk); + if (ret) + return ret; if (gpiomode) /* No glitch when going to GPIO mode */ __nmk_gpio_set_mode(nmk_chip, bit, NMK_GPIO_ALT_GPIO); -- 2.39.5