[PATCH] staging: comedi: replace ENOSYS by proper error codes

[julien.dehee@gmail.com]

From: Julien Dehee <julien.dehee@gmail.com>

comedi/comedi_fops.c
    use ENODEV following open manual

comedi/drivers.c
    use ENOTTY following ioctl manual

drivers/serial2002.c
    use ENOTTY following ioctl manual

Signed-off-by: Julien Dehee <julien.dehee@gmail.com>
---
 drivers/staging/comedi/comedi_fops.c        | 2 +-
 drivers/staging/comedi/drivers.c            | 2 +-
 drivers/staging/comedi/drivers/serial2002.c | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c
index 146ab00..6896a1f 100644
--- a/drivers/staging/comedi/comedi_fops.c
+++ b/drivers/staging/comedi/comedi_fops.c
@@ -2611,7 +2611,7 @@ 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 = -ENODEV;
 			goto out;
 		}
 		if (dev->open) {
diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c
index ed0b60c..db89096 100644
--- a/drivers/staging/comedi/drivers.c
+++ b/drivers/staging/comedi/drivers.c
@@ -820,7 +820,7 @@ int comedi_device_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 			 "driver '%s' does not support attach using comedi_config\n",
 			 driv->driver_name);
 		module_put(driv->module);
-		ret = -ENOSYS;
+		ret = -ENOTTY;
 		goto out;
 	}
 	dev->driver = driv;
diff --git a/drivers/staging/comedi/drivers/serial2002.c b/drivers/staging/comedi/drivers/serial2002.c
index 83da162..929bf20 100644
--- a/drivers/staging/comedi/drivers/serial2002.c
+++ b/drivers/staging/comedi/drivers/serial2002.c
@@ -101,7 +101,7 @@ static long serial2002_tty_ioctl(struct file *f, unsigned op,
 	if (f->f_op->unlocked_ioctl)
 		return f->f_op->unlocked_ioctl(f, op, param);
 
-	return -ENOSYS;
+	return -ENOTTY;
 }
 
 static int serial2002_tty_write(struct file *f, unsigned char *buf, int count)
-- 
1.9.1