linux-kernel - [PATCH v2 04/21] pinctrl: imx: Use temporary variable to hold pins

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Date:   Thu, 23 Nov 2023 21:31:32 +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>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        Hal Feng <hal.feng@...rfivetech.com>
Subject: [PATCH v2 04/21] pinctrl: imx: 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/freescale/pinctrl-imx.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c
index 9bc16943014f..9099a7c81d4a 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx.c
@@ -513,6 +513,7 @@ static int imx_pinctrl_parse_groups(struct device_node *np,
 	struct imx_pin *pin;
 	int size, pin_size;
 	const __be32 *list;
+	int *pins;
 	int i;
 
 	dev_dbg(ipctl->dev, "group(%d): %pOFn\n", index, np);
@@ -557,20 +558,20 @@ static int imx_pinctrl_parse_groups(struct device_node *np,
 	grp->data = devm_kcalloc(ipctl->dev,
 				 grp->num_pins, sizeof(struct imx_pin),
 				 GFP_KERNEL);
-	grp->pins = devm_kcalloc(ipctl->dev,
-				 grp->num_pins, sizeof(unsigned int),
-				 GFP_KERNEL);
-	if (!grp->pins || !grp->data)
+	if (!grp->data)
 		return -ENOMEM;
 
+	pins = devm_kcalloc(ipctl->dev, grp->num_pins, sizeof(*pins), GFP_KERNEL);
+	if (!pins)
+		return -ENOMEM;
+	grp->pins = pins;
+
 	for (i = 0; i < grp->num_pins; i++) {
 		pin = &((struct imx_pin *)(grp->data))[i];
 		if (info->flags & IMX_USE_SCU)
-			info->imx_pinctrl_parse_pin(ipctl, &grp->pins[i],
-						  pin, &list);
+			info->imx_pinctrl_parse_pin(ipctl, &pins[i], pin, &list);
 		else
-			imx_pinctrl_parse_pin_mmio(ipctl, &grp->pins[i],
-						   pin, &list, np);
+			imx_pinctrl_parse_pin_mmio(ipctl, &pins[i], pin, &list, np);
 	}
 
 	return 0;
-- 
2.43.0.rc1.1.gbec44491f096