linux-kernel - [PATCH v1 1/1] gpio: xilinx: Remove duplicate assignment of of_gpio_n

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Date:   Thu, 12 Jan 2023 18:39:51 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>,
        Srinivas Neeli <srinivas.neeli@...inx.com>,
        Michal Simek <michal.simek@...inx.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>
Subject: [PATCH v1 1/1] gpio: xilinx: Remove duplicate assignment of of_gpio_n_cells

The of_gpio_n_cells default is 2 when ->of_xlate() callback is
not defined. No need to assign it explicitly in the driver.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/gpio/gpio-xilinx.c | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c
index 619a00ad71d4..bbcde91135b9 100644
--- a/drivers/gpio/gpio-xilinx.c
+++ b/drivers/gpio/gpio-xilinx.c
@@ -558,7 +558,6 @@ static int xgpio_probe(struct platform_device *pdev)
 	int status = 0;
 	struct device_node *np = pdev->dev.of_node;
 	u32 is_dual = 0;
-	u32 cells = 2;
 	u32 width[2];
 	u32 state[2];
 	u32 dir[2];
@@ -591,15 +590,6 @@ static int xgpio_probe(struct platform_device *pdev)
 
 	bitmap_from_arr32(chip->dir, dir, 64);
 
-	/* Update cells with gpio-cells value */
-	if (of_property_read_u32(np, "#gpio-cells", &cells))
-		dev_dbg(&pdev->dev, "Missing gpio-cells property\n");
-
-	if (cells != 2) {
-		dev_err(&pdev->dev, "#gpio-cells mismatch\n");
-		return -EINVAL;
-	}
-
 	/*
 	 * Check device node and parent device node for device width
 	 * and assume default width of 32
@@ -630,7 +620,6 @@ static int xgpio_probe(struct platform_device *pdev)
 	chip->gc.parent = &pdev->dev;
 	chip->gc.direction_input = xgpio_dir_in;
 	chip->gc.direction_output = xgpio_dir_out;
-	chip->gc.of_gpio_n_cells = cells;
 	chip->gc.get = xgpio_get;
 	chip->gc.set = xgpio_set;
 	chip->gc.request = xgpio_request;
-- 
2.39.0