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staging: most: aim-cdev: report error returned by alloc_chrdev_region 

This patch forwards the error code returned by function
alloc_chrdev_region(). It is needed to stop the module
from hiding the actual cause of failure.

Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christian Gromm 2016-08-19 13:09:34 +02:00 committed by Greg Kroah-Hartman
parent 9b28e14818
commit 324e87b7e1
1 changed files with 3 additions and 2 deletions
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5
drivers/staging/most/aim-cdev/cdev.c
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@ -507,8 +507,9 @@ static int __init mod_init(void)
spin_lock_init(&ch_list_lock);
ida_init(&minor_id);
if (alloc_chrdev_region(&aim_devno, 0, 50, "cdev") < 0)
return -ENOMEM;
err = alloc_chrdev_region(&aim_devno, 0, 50, "cdev");
if (err < 0)
return err;
major = MAJOR(aim_devno);
aim_class = class_create(THIS_MODULE, "most_cdev_aim");