diff options
| author | Christian Gromm <christian.gromm@microchip.com> | 2016-08-19 13:09:33 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-08-21 16:50:38 +0200 |
| commit | 9b28e14818ad959516e99b7ba3d1fc2e5500ca51 (patch) | |
| tree | c783cedfb04db4a9c75cb84d9fa8e6e52156bdee /drivers/staging/most/aim-cdev | |
| parent | 18c6e2d60263022ee82953de6a66d171db0377fd (diff) | |
| download | linux-9b28e14818ad959516e99b7ba3d1fc2e5500ca51.tar.bz2 | |
staging: most: aim-cdev: fix reported error codes
Currently, the aim-cdev is returning different error codes for the same
root cause. This patch is needed to get rid of the module's inconsistency
when reporting errors.
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/most/aim-cdev')
| -rw-r--r-- | drivers/staging/most/aim-cdev/cdev.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/staging/most/aim-cdev/cdev.c b/drivers/staging/most/aim-cdev/cdev.c index de4f76abfb47..6ca2440b07c4 100644 --- a/drivers/staging/most/aim-cdev/cdev.c +++ b/drivers/staging/most/aim-cdev/cdev.c @@ -130,7 +130,7 @@ static int aim_open(struct inode *inode, struct file *filp) if (!c->dev) { pr_info("WARN: Device is destroyed\n"); mutex_unlock(&c->io_mutex); - return -EBUSY; + return -ENODEV; } if (c->access_ref) { @@ -201,7 +201,7 @@ static ssize_t aim_write(struct file *filp, const char __user *buf, } if (unlikely(!c->dev)) { - ret = -EPIPE; + ret = -ENODEV; goto unlock; } @@ -256,7 +256,7 @@ aim_read(struct file *filp, char __user *buf, size_t count, loff_t *offset) /* make sure we don't submit to gone devices */ if (unlikely(!c->dev)) { mutex_unlock(&c->io_mutex); - return -EIO; + return -ENODEV; } to_copy = min_t(size_t, @@ -366,7 +366,7 @@ static int aim_rx_completion(struct mbo *mbo) spin_lock(&c->unlink); if (!c->access_ref || !c->dev) { spin_unlock(&c->unlink); - return -EFAULT; + return -ENODEV; } kfifo_in(&c->fifo, &mbo, 1); spin_unlock(&c->unlink); @@ -499,6 +499,8 @@ static struct most_aim cdev_aim = { static int __init mod_init(void) { + int err; + pr_info("init()\n"); INIT_LIST_HEAD(&channel_list); @@ -506,16 +508,17 @@ static int __init mod_init(void) ida_init(&minor_id); if (alloc_chrdev_region(&aim_devno, 0, 50, "cdev") < 0) - return -EIO; + return -ENOMEM; major = MAJOR(aim_devno); aim_class = class_create(THIS_MODULE, "most_cdev_aim"); if (IS_ERR(aim_class)) { pr_err("no udev support\n"); + err = PTR_ERR(aim_class); goto free_cdev; } - - if (most_register_aim(&cdev_aim)) + err = most_register_aim(&cdev_aim); + if (err) goto dest_class; return 0; @@ -523,7 +526,7 @@ dest_class: class_destroy(aim_class); free_cdev: unregister_chrdev_region(aim_devno, 1); - return -EIO; + return err; } static void __exit mod_exit(void) |