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ioctl.c: Remove unnecessary initialization

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The "alloc_chrdev_region" function will dynamically choose the
major number and store it at "dev". It is unnecessary to initialize
the "dev" before the "alloc_chrdev_region" function.
This commit is contained in:
linD026 2021-09-13 14:51:20 +08:00
parent 0a4aad90b4
commit fa035da36e
1 changed files with 1 additions and 1 deletions
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examples/ioctl.c
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@ -149,7 +149,7 @@ static struct file_operations fops = {
static int ioctl_init(void) static int ioctl_init(void)
{ {
dev_t dev = MKDEV(test_ioctl_major, 0); dev_t dev;
int alloc_ret = 0; int alloc_ret = 0;
int cdev_ret = 0; int cdev_ret = 0;
alloc_ret = alloc_chrdev_region(&dev, 0, num_of_dev, DRIVER_NAME); alloc_ret = alloc_chrdev_region(&dev, 0, num_of_dev, DRIVER_NAME);