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.
Signed-off-by: santhosh pai <santhosh.pa...@yahoo.com> --- drivers/staging/comedi/comedi_fops.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index d6a37e9..1ab443c 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -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 = -EPERM; + rc = -ENXIO; goto out; } if (dev->open) { -- 1.7.9.5 _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel