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 2164814A97 for ; Mon, 23 Oct 2023 11:18:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="vlfbaU53" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8C31EC433C7; Mon, 23 Oct 2023 11:18:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1698059934; bh=KdPP+M7QZL2tfmhnJ7jF/e7kXtLYRI5hvAM90RF/r/w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vlfbaU53Nvjmi91+VdsXRW22EkzbiScvEIC/4tJBqoizlggO4d2h0HxHvZkFrVlAc 9yKWMBtLafUa2tDLq7wdTAaEn3PlJajoEECjJWnHc5JcwYJs/wLQOVUPpI7saJcGDR aF8W1W8JUJ3/4FM40FKC87wzhtw2+vkJiTGU7W+0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Haibo Chen , Bartosz Golaszewski Subject: [PATCH 4.19 93/98] gpio: vf610: set value before the direction to avoid a glitch Date: Mon, 23 Oct 2023 12:57:22 +0200 Message-ID: <20231023104816.808994917@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231023104813.580375891@linuxfoundation.org> References: <20231023104813.580375891@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Haibo Chen commit fc363413ef8ea842ae7a99e3caf5465dafdd3a49 upstream. We found a glitch when configuring the pad as output high. To avoid this glitch, move the data value setting before direction config in the function vf610_gpio_direction_output(). Fixes: 659d8a62311f ("gpio: vf610: add imx7ulp support") Signed-off-by: Haibo Chen [Bartosz: tweak the commit message] Signed-off-by: Bartosz Golaszewski Signed-off-by: Greg Kroah-Hartman --- drivers/gpio/gpio-vf610.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/gpio/gpio-vf610.c +++ b/drivers/gpio/gpio-vf610.c @@ -137,14 +137,14 @@ static int vf610_gpio_direction_output(s unsigned long mask = BIT(gpio); u32 val; + vf610_gpio_set(chip, gpio, value); + if (port->sdata && port->sdata->have_paddr) { val = vf610_gpio_readl(port->gpio_base + GPIO_PDDR); val |= mask; vf610_gpio_writel(val, port->gpio_base + GPIO_PDDR); } - vf610_gpio_set(chip, gpio, value); - return pinctrl_gpio_direction_output(chip->base + gpio); }