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* Create a unique cdev number for on demand devicesJuergen Beisert2011-11-281-0/+14
| | | | | | | | For disk like devices attached to MCI, ATA or USB it depends on the order they will be recognized. So an unique number for all disk like devices is required. Signed-off-by: Juergen Beisert <jbe@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* devfs: factor out core devfs functionalitySascha Hauer2011-04-111-0/+236
This makes it possible to compile without devfs. devfs_create/devfs_remove is used by drivers and thus must still be present even without devfs support. Also, this patch adds cdev_open/cdev_close/cdev_flush/cdev_ioctl calls to work with devices without using the file api. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>