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staging: Comedi: comedi_fops: Fixed the return error code 

This patch fixes the checkpatch.pl warning:

WARNING: ENOSYS means 'invalid syscall nr' and nothing else

try_module_get fails when the reference count of the module is not
allowed to be incremented ,and hence -ENXIO is returned indicating
no device or address.

[IA - combined two of santhosh's changes to the error return value!]

Signed-off-by: santhosh pai <santhosh.pai88@yahoo.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Santhosh Pai 2015-06-29 10:44:03 +01:00 committed by Greg Kroah-Hartman
parent 0e0d311ebd
commit 90e6f51da7
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/comedi/comedi_fops.c
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@ -2606,7 +2606,7 @@ static int comedi_open(struct inode *inode, struct file *file)
}
if (dev->attached && dev->use_count == 0) {
if (!try_module_get(dev->driver->module)) {
rc = -ENOSYS;
rc = -ENXIO;
goto out;
}
if (dev->open) {