staging: pi433: Rename "pi433_dev" of type "dev_t" to "pi433_devt"

Distinguish struct device type instances from dev_t instances
to enhance readability.
Signed-off-by: Shahar Avidar <ikobh7@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/20240405074000.3481217-5-ikobh7@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/pi433/pi433_if.c

@@ -52,7 +52,7 @@
 #define FIFO_THRESHOLD	15		/* bytes */
 #define NUM_DIO			2
 
-static dev_t pi433_dev;
+static dev_t pi433_devt;
 static DEFINE_IDR(pi433_idr);
 static DEFINE_MUTEX(minor_lock); /* Protect idr accesses */
 static struct dentry *root_dir;	/* debugfs root directory for the driver */
@@ -1261,7 +1261,7 @@ static int pi433_probe(struct spi_device *spi)
 	}
 
 	/* create device */
-	pi433->devt = MKDEV(MAJOR(pi433_dev), pi433->minor);
+	pi433->devt = MKDEV(MAJOR(pi433_devt), pi433->minor);
 	pi433->dev = device_create(&pi433_class,
 				   &spi->dev,
 				   pi433->devt,
@@ -1275,7 +1275,7 @@ static int pi433_probe(struct spi_device *spi)
 	} else {
 		dev_dbg(pi433->dev,
 			"created device for major %d, minor %d\n",
-			MAJOR(pi433_dev),
+			MAJOR(pi433_devt),
 			pi433->minor);
 	}
 
@@ -1396,13 +1396,13 @@ static int __init pi433_init(void)
 	 * that will key udev/mdev to add/remove /dev nodes.
 	 * Last, register the driver which manages those device numbers.
 	 */
-	status = alloc_chrdev_region(&pi433_dev, 0, N_PI433_MINORS, "pi433");
+	status = alloc_chrdev_region(&pi433_devt, 0, N_PI433_MINORS, "pi433");
 	if (status < 0)
 		return status;
 
 	status = class_register(&pi433_class);
 	if (status) {
-		unregister_chrdev(MAJOR(pi433_dev),
+		unregister_chrdev(MAJOR(pi433_devt),
 				  pi433_spi_driver.driver.name);
 		return status;
 	}
@@ -1412,7 +1412,7 @@ static int __init pi433_init(void)
 	status = spi_register_driver(&pi433_spi_driver);
 	if (status < 0) {
 		class_unregister(&pi433_class);
-		unregister_chrdev(MAJOR(pi433_dev),
+		unregister_chrdev(MAJOR(pi433_devt),
 				  pi433_spi_driver.driver.name);
 	}
 
@@ -1425,7 +1425,7 @@ static void __exit pi433_exit(void)
 {
 	spi_unregister_driver(&pi433_spi_driver);
 	class_unregister(&pi433_class);
-	unregister_chrdev(MAJOR(pi433_dev), pi433_spi_driver.driver.name);
+	unregister_chrdev(MAJOR(pi433_devt), pi433_spi_driver.driver.name);
 	debugfs_remove(root_dir);
 }
 module_exit(pi433_exit);