linux-kernel - [PATCH v4 04/23] pinctrl: equilibrium: Use temporary variable to hold pins

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Date:   Wed, 29 Nov 2023 18:06:27 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Jonathan Neuschäfer <j.neuschaefer@....net>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Biju Das <biju.das.jz@...renesas.com>,
        Claudiu Beznea <claudiu.beznea.uj@...renesas.com>,
        Jianlong Huang <jianlong.huang@...rfivetech.com>,
        linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        openbmc@...ts.ozlabs.org, linux-mips@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-renesas-soc@...r.kernel.org
Cc:     Ray Jui <rjui@...adcom.com>, Scott Branden <sbranden@...adcom.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        Dong Aisheng <aisheng.dong@....com>,
        Fabio Estevam <festevam@...il.com>,
        Shawn Guo <shawnguo@...nel.org>, Jacky Bai <ping.bai@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        Sean Wang <sean.wang@...nel.org>,
        Paul Cercueil <paul@...pouillou.net>,
        Lakshmi Sowjanya D <lakshmi.sowjanya.d@...el.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        Hal Feng <hal.feng@...rfivetech.com>
Subject: [PATCH v4 04/23] pinctrl: equilibrium: Use temporary variable to hold pins

The pins are allocated from the heap, but in order to pass
them as constant object, we need to use non-constant pointer.
Achieve this by using a temporary variable.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/pinctrl/pinctrl-equilibrium.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-equilibrium.c b/drivers/pinctrl/pinctrl-equilibrium.c
index 54755b583d3f..fd59cfdeefac 100644
--- a/drivers/pinctrl/pinctrl-equilibrium.c
+++ b/drivers/pinctrl/pinctrl-equilibrium.c
@@ -704,7 +704,7 @@ static int eqbr_build_groups(struct eqbr_pinctrl_drv_data *drvdata)
 {
 	struct device *dev = drvdata->dev;
 	struct device_node *node = dev->of_node;
-	unsigned int *pinmux, pin_id, pinmux_id;
+	unsigned int *pins, *pinmux, pin_id, pinmux_id;
 	struct group_desc group;
 	struct device_node *np;
 	struct property *prop;
@@ -723,15 +723,14 @@ static int eqbr_build_groups(struct eqbr_pinctrl_drv_data *drvdata)
 		}
 		group.num_pins = err;
 		group.name = prop->value;
-		group.pins = devm_kcalloc(dev, group.num_pins,
-					  sizeof(*(group.pins)), GFP_KERNEL);
-		if (!group.pins) {
+		pins = devm_kcalloc(dev, group.num_pins, sizeof(*pins), GFP_KERNEL);
+		if (!pins) {
 			of_node_put(np);
 			return -ENOMEM;
 		}
+		group.pins = pins;
 
-		pinmux = devm_kcalloc(dev, group.num_pins, sizeof(*pinmux),
-				      GFP_KERNEL);
+		pinmux = devm_kcalloc(dev, group.num_pins, sizeof(*pinmux), GFP_KERNEL);
 		if (!pinmux) {
 			of_node_put(np);
 			return -ENOMEM;
@@ -750,7 +749,7 @@ static int eqbr_build_groups(struct eqbr_pinctrl_drv_data *drvdata)
 				of_node_put(np);
 				return -EINVAL;
 			}
-			group.pins[j] = pin_id;
+			pins[j] = pin_id;
 			if (of_property_read_u32_index(np, "pinmux", j, &pinmux_id)) {
 				dev_err(dev, "Group %s: Read intel pinmux id failed\n",
 					group.name);
-- 
2.43.0.rc1.1.gbec44491f096