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staging: unisys: unregister chardev on error 

after registering the major numbers if the cdev_add fails then we were
not releasing the major numbers. now we are doing that.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sudip Mukherjee 2015-03-27 15:26:09 +05:30 committed by Greg Kroah-Hartman
parent 61c507cf65
commit 6bdb610142
1 changed files with 3 additions and 1 deletions
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4
drivers/staging/unisys/visorchipset/file.c
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@ -65,8 +65,10 @@ visorchipset_file_init(dev_t major_dev, struct visorchannel **controlvm_channel)
return -1; return -1;
} }
rc = cdev_add(&file_cdev, MKDEV(MAJOR(major_dev), 0), 1); rc = cdev_add(&file_cdev, MKDEV(MAJOR(major_dev), 0), 1);
if (rc < 0) if (rc < 0) {
unregister_chrdev_region(major_dev, 1);
return -1; return -1;
}
return 0; return 0;
} }