linux-kernel - [PATCH v1 1/3] spidev: Decrease indentation level in spidev_ioctl() SPI_IOC_RD

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Message-Id: <20230824162209.2890440-2-andriy.shevchenko@linux.intel.com>
Date:   Thu, 24 Aug 2023 19:22:07 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Mark Brown <broonie@...nel.org>, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Alexander Sverdlin <alexander.sverdlin@...mens.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 1/3] spidev: Decrease indentation level in spidev_ioctl() SPI_IOC_RD_MODE*

Instead of defining a local controller variable inside an indented
block, move the definition to the top of spidev_ioctl() and reuse
it in the SPI_IOC_RD_MODE* and SPI_IOC_WR_MODE* cases.

This drops unneeded indentation and reduces amount of LoCs.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/spi/spidev.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index d13dc15cc191..dc516f0ca71f 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -357,6 +357,7 @@ spidev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 	int			retval = 0;
 	struct spidev_data	*spidev;
 	struct spi_device	*spi;
+	struct spi_controller	*ctlr;
 	u32			tmp;
 	unsigned		n_ioc;
 	struct spi_ioc_transfer	*ioc;
@@ -376,6 +377,8 @@ spidev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		return -ESHUTDOWN;
 	}
 
+	ctlr = spi->controller;
+
 	/* use the buffer lock here for triple duty:
 	 *  - prevent I/O (from us) so calling spi_setup() is safe;
 	 *  - prevent concurrent SPI_IOC_WR_* from morphing
@@ -390,13 +393,9 @@ spidev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 	case SPI_IOC_RD_MODE32:
 		tmp = spi->mode;
 
-		{
-			struct spi_controller *ctlr = spi->controller;
-
-			if (ctlr->use_gpio_descriptors && ctlr->cs_gpiods &&
-			    ctlr->cs_gpiods[spi_get_chipselect(spi, 0)])
-				tmp &= ~SPI_CS_HIGH;
-		}
+		if (ctlr->use_gpio_descriptors && ctlr->cs_gpiods &&
+		    ctlr->cs_gpiods[spi_get_chipselect(spi, 0)])
+			tmp &= ~SPI_CS_HIGH;
 
 		if (cmd == SPI_IOC_RD_MODE)
 			retval = put_user(tmp & SPI_MODE_MASK,
@@ -424,7 +423,6 @@ spidev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		else
 			retval = get_user(tmp, (u32 __user *)arg);
 		if (retval == 0) {
-			struct spi_controller *ctlr = spi->controller;
 			u32	save = spi->mode;
 
 			if (tmp & ~SPI_MODE_MASK) {
-- 
2.40.0.1.gaa8946217a0b