check_pattern – [GENERIC] check if a pattern is in the buffer Synopsis int check_pattern(uint8_t *buf, int len, int paglen, struct nand_bbt_descr *td); Arguments buf the buffer to search len the length of buffer to search paglen the pagelength td search pattern descriptor Description Check for a pattern at the given place. Used to search bad…
check_disk_size_change – checks for disk size change and adjusts bdev size. Synopsis void check_disk_size_change(struct gendisk *disk, struct block_device *bdev); Arguments disk struct gendisk to check bdev struct bdev to adjust. Description This routine checks to see if the bdev size does not match the disk size and adjusts it if it differs. Copyright
check_create – [GENERIC] create and write bbt(s) if necessary Synopsis int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_descr *bd); Arguments mtd MTD device structure buf temporary buffer bd descriptor for the good/bad block search pattern Description The function checks the results of the previous call to read_bbt and creates / updates the bbt(s) if necessary….
check_conflicting_open – see if the given dentry points to a file that has an existing open that would conflict with the desired lease. Synopsis int check_conflicting_open(const struct dentry *dentry, const long arg, int flags); Arguments dentry dentry to check arg type of lease that we’re trying to acquire flags current lock flags Description Check to…
change_bit – Toggle a bit in memory Synopsis void change_bit(long nr, volatile unsigned long *addr); Arguments nr Bit to change addr Address to start counting from Description change_bit is atomic and may not be reordered. Note that nr may be almost arbitrarily large; this function is not restricted to acting on a single-word quantity. Copyright
cdev_init – initialize a cdev structure Synopsis void cdev_init(struct cdev *cdev, const struct file_operations *fops); Arguments cdev the structure to initialize fops the file_operations for this device Description Initializes cdev, remembering fops, making it ready to add to the system with cdev_add. Copyright
cdev_del – remove a cdev from the system Synopsis void cdev_del(struct cdev *p); Arguments p the cdev structure to be removed Description cdev_del removes p from the system, possibly freeing the structure itself. Copyright
cdev_alloc – allocate a cdev structure Synopsis struct cdev *cdev_alloc(void); Arguments void no arguments Description Allocates and returns a cdev structure, or NULL on failure. Copyright
cdev_add – add a char device to the system Synopsis int cdev_add(struct cdev *p, dev_t dev, unsigned count); Arguments p the cdev structure for the device dev the first device number for which this device is responsible count the number of consecutive minor numbers corresponding to this device Description cdev_add adds the device represented by…
cdc_parse_cdc_header – parse the extra headers present in CDC devices Synopsis int cdc_parse_cdc_header(struct usb_cdc_parsed_header *hdr, struct usb_interface *intf, u8 *buffer, int buflen); Arguments hdr the place to put the results of the parsing intf the interface for which parsing is requested buffer pointer to the extra headers to be parsed buflen length of the extra…
ccwgroup_set_online – enable a ccwgroup device Synopsis int ccwgroup_set_online(struct ccwgroup_device *gdev); Arguments gdev target ccwgroup device Description This function attempts to put the ccwgroup device into the online state. Return 0 on success and a negative error value on failure. Author Cornelia Huck <cornelia.huck [at] de.ibm.com> Author. Copyright
ccwgroup_set_offline – disable a ccwgroup device Synopsis int ccwgroup_set_offline(struct ccwgroup_device *gdev); Arguments gdev target ccwgroup device Description This function attempts to put the ccwgroup device into the offline state. Return 0 on success and a negative error value on failure. Author Cornelia Huck <cornelia.huck [at] de.ibm.com> Author. Copyright
ccwgroup_remove_ccwdev – remove function for slave devices Synopsis void ccwgroup_remove_ccwdev(struct ccw_device *cdev); Arguments cdev ccw device to be removed Description This is a remove function for ccw devices that are slave devices in a ccw group device. It sets the ccw device offline and also deregisters the embedding ccw group device. Author Cornelia Huck <cornelia.huck…
ccwgroup_probe_ccwdev – probe function for slave devices Synopsis int ccwgroup_probe_ccwdev(struct ccw_device *cdev); Arguments cdev ccw device to be probed Description This is a dummy probe function for ccw devices that are slave devices in a ccw group device. Return always 0 Author Cornelia Huck <cornelia.huck [at] de.ibm.com> Author. Copyright
ccwgroup_driver_unregister – deregister a ccw group driver Synopsis void ccwgroup_driver_unregister(struct ccwgroup_driver *cdriver); Arguments cdriver driver to be deregistered Description This function is mainly a wrapper around driver_unregister. Author Cornelia Huck <cornelia.huck [at] de.ibm.com> Author. Copyright
ccwgroup_driver_register – register a ccw group driver Synopsis int ccwgroup_driver_register(struct ccwgroup_driver *cdriver); Arguments cdriver driver to be registered Description This function is mainly a wrapper around driver_register. Author Cornelia Huck <cornelia.huck [at] de.ibm.com> Author. Copyright
ccwgroup_create_dev – create and register a ccw group device Synopsis int ccwgroup_create_dev(struct device *parent, struct ccwgroup_driver *gdrv, int num_devices, const char *buf); Arguments parent parent device for the new device gdrv driver for the new group device num_devices number of slave devices buf buffer containing comma separated bus ids of slave devices Description Create and…
ccw_driver_unregister – deregister a ccw driver Synopsis void ccw_driver_unregister(struct ccw_driver *cdriver); Arguments cdriver driver to be deregistered Description This function is mainly a wrapper around driver_unregister. Author Cornelia Huck <cornelia.huck [at] de.ibm.com> Author. Copyright
ccw_driver_register – register a ccw driver Synopsis int ccw_driver_register(struct ccw_driver *cdriver); Arguments cdriver driver to be registered Description This function is mainly a wrapper around driver_register. Return 0 on success and a negative error value on failure. Author Cornelia Huck <cornelia.huck [at] de.ibm.com> Author. Copyright
ccw_device_tm_start_timeout_key – perform start function Synopsis int ccw_device_tm_start_timeout_key(struct ccw_device *cdev, struct tcw *tcw, unsigned long intparm, u8 lpm, u8 key, int expires); Arguments cdev ccw device on which to perform the start function tcw transport-command word to be started intparm user defined parameter to be passed to the interrupt handler lpm mask of paths to…