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 AAE1C157E6B; Mon, 29 Jan 2024 17:11:50 +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=1706548310; cv=none; b=ndWu+b1+HvSfUIe/jlj4GBHvyXPzygzNPrKIss/R+wiXGSk9DQzCvvyI91rc34cMPu1dy6uFX2T9ZghSLaY8wtGMZQMpl7xLruDzPTUB3I2z5gtQQvsQ4drqVdJLWrrApLQYJoGsQ4EPC6XBdcSCXM4i9UnKyjSXNoNBKXk5MIA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706548310; c=relaxed/simple; bh=y8V6/qgHmUCedl8p+lozXK58QP+hIQUCHs8vUZ0lG9I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WKSufXkx2aKM41lMuFkbneDVpd694Xv2IaSzlpynO78CBEquSs50wPNmrTY39oZchUtEt2VRW3GM5DgZM940EKnT+zpIVwuUMXRR0xSNERfgkzCqbRaxyYCGyfyfTCVj9ZlO5eOZI0HUtLHuweptepPb0v/LoQ4O/4zBokIjXPA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=MTeiBp/v; 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="MTeiBp/v" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 741BAC43330; Mon, 29 Jan 2024 17:11:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1706548310; bh=y8V6/qgHmUCedl8p+lozXK58QP+hIQUCHs8vUZ0lG9I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MTeiBp/vvtThDk8BDGiuXR09fTnlnRG2ig/IUA9MqLvsEmHItaKXTFVGGip0WbQ3b zdlW6izV/U804fSOe3j2uL9k5rTwK0WNzyMJSaaFWzZm4pD15ivKFthkg2OOVY3r4p 9kOSF63ZO8u6vF6lZHUcWpMYGA+WGmRUTNNmv28o= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Andy Shevchenko , Hugo Villeneuve Subject: [PATCH 6.1 060/185] serial: sc16is7xx: remove global regmap from struct sc16is7xx_port Date: Mon, 29 Jan 2024 09:04:20 -0800 Message-ID: <20240129170000.532043379@linuxfoundation.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240129165958.589924174@linuxfoundation.org> References: <20240129165958.589924174@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 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Hugo Villeneuve commit f6959c5217bd799bcb770b95d3c09b3244e175c6 upstream. Remove global struct regmap so that it is more obvious that this regmap is to be used only in the probe function. Also add a comment to that effect in probe function. Fixes: 3837a0379533 ("serial: sc16is7xx: improve regmap debugfs by using one regmap per port") Cc: Suggested-by: Andy Shevchenko Signed-off-by: Hugo Villeneuve Link: https://lore.kernel.org/r/20231211171353.2901416-3-hugo@hugovil.com Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/sc16is7xx.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) --- a/drivers/tty/serial/sc16is7xx.c +++ b/drivers/tty/serial/sc16is7xx.c @@ -335,7 +335,6 @@ struct sc16is7xx_one { struct sc16is7xx_port { const struct sc16is7xx_devtype *devtype; - struct regmap *regmap; struct clk *clk; #ifdef CONFIG_GPIOLIB struct gpio_chip gpio; @@ -1415,7 +1414,8 @@ static int sc16is7xx_setup_gpio_chip(str /* * Configure ports designated to operate as modem control lines. */ -static int sc16is7xx_setup_mctrl_ports(struct sc16is7xx_port *s) +static int sc16is7xx_setup_mctrl_ports(struct sc16is7xx_port *s, + struct regmap *regmap) { int i; int ret; @@ -1444,7 +1444,7 @@ static int sc16is7xx_setup_mctrl_ports(s if (s->mctrl_mask) regmap_update_bits( - s->regmap, + regmap, SC16IS7XX_IOCONTROL_REG, SC16IS7XX_IOCONTROL_MODEM_A_BIT | SC16IS7XX_IOCONTROL_MODEM_B_BIT, s->mctrl_mask); @@ -1476,6 +1476,10 @@ static int sc16is7xx_probe(struct device * This device does not have an identification register that would * tell us if we are really connected to the correct device. * The best we can do is to check if communication is at all possible. + * + * Note: regmap[0] is used in the probe function to access registers + * common to all channels/ports, as it is guaranteed to be present on + * all variants. */ ret = regmap_read(regmaps[0], SC16IS7XX_LSR_REG, &val); if (ret < 0) @@ -1511,7 +1515,6 @@ static int sc16is7xx_probe(struct device return -EINVAL; } - s->regmap = regmaps[0]; s->devtype = devtype; dev_set_drvdata(dev, s); mutex_init(&s->efr_lock); @@ -1526,7 +1529,7 @@ static int sc16is7xx_probe(struct device sched_set_fifo(s->kworker_task); /* reset device, purging any pending irq / data */ - regmap_write(s->regmap, SC16IS7XX_IOCONTROL_REG, + regmap_write(regmaps[0], SC16IS7XX_IOCONTROL_REG, SC16IS7XX_IOCONTROL_SRESET_BIT); for (i = 0; i < devtype->nr_uart; ++i) { @@ -1606,7 +1609,7 @@ static int sc16is7xx_probe(struct device s->p[u].irda_mode = true; } - ret = sc16is7xx_setup_mctrl_ports(s); + ret = sc16is7xx_setup_mctrl_ports(s, regmaps[0]); if (ret) goto out_ports;