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From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Mark Brown <broonie@kernel.org>,
	linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Alexander Sverdlin <alexander.sverdlin@siemens.com>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Lukas Wunner <lukas@wunner.de>
Subject: [PATCH v1 3/3] spidev: Simplify SPI_IOC_RD_MODE* cases in spidev_ioctl()
Date: Thu, 24 Aug 2023 19:22:09 +0300	[thread overview]
Message-ID: <20230824162209.2890440-4-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20230824162209.2890440-1-andriy.shevchenko@linux.intel.com>

The temporary variable tmp is not used outside of the
SPI_IOC_RD_MODE* cases, hence we can optimize its use.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Lukas Wunner <lukas@wunner.de>
---
 drivers/spi/spidev.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index e324b42c658c..c5450217528b 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -391,17 +391,15 @@ spidev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 	/* read requests */
 	case SPI_IOC_RD_MODE:
 	case SPI_IOC_RD_MODE32:
-		tmp = spi->mode;
+		tmp = spi->mode & SPI_MODE_MASK;
 
 		if (ctlr->use_gpio_descriptors && spi_get_csgpiod(spi, 0))
 			tmp &= ~SPI_CS_HIGH;
 
 		if (cmd == SPI_IOC_RD_MODE)
-			retval = put_user(tmp & SPI_MODE_MASK,
-					  (__u8 __user *)arg);
+			retval = put_user(tmp, (__u8 __user *)arg);
 		else
-			retval = put_user(tmp & SPI_MODE_MASK,
-					  (__u32 __user *)arg);
+			retval = put_user(tmp, (__u32 __user *)arg);
 		break;
 	case SPI_IOC_RD_LSB_FIRST:
 		retval = put_user((spi->mode & SPI_LSB_FIRST) ?  1 : 0,
-- 
2.40.0.1.gaa8946217a0b


  parent reply	other threads:[~2023-08-24 16:24 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-24 16:22 [PATCH v1 0/3] spidev: A few cleanups Andy Shevchenko
2023-08-24 16:22 ` [PATCH v1 1/3] spidev: Decrease indentation level in spidev_ioctl() SPI_IOC_RD_MODE* Andy Shevchenko
2023-08-25  7:17   ` Sverdlin, Alexander
2023-08-24 16:22 ` [PATCH v1 2/3] spidev: Switch to use spi_get_csgpiod() Andy Shevchenko
2023-08-25  7:17   ` Sverdlin, Alexander
2023-08-24 16:22 ` Andy Shevchenko [this message]
2023-08-25  7:17   ` [PATCH v1 3/3] spidev: Simplify SPI_IOC_RD_MODE* cases in spidev_ioctl() Sverdlin, Alexander
2023-09-12 11:37 ` [PATCH v1 0/3] spidev: A few cleanups Mark Brown

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