disk_map_sector_rcu – map sector to partition Synopsis struct hd_struct *disk_map_sector_rcu(struct gendisk *disk, sector_t sector); Arguments disk gendisk of interest sector sector to map Description Find out which partition sector maps to on disk. This is primarily used for stats accounting. Context RCU read locked. The returned partition pointer is valid only while preemption is disabled….
disk_get_part – get partition Synopsis struct hd_struct *disk_get_part(struct gendisk *disk, int partno); Arguments disk disk to look partition from partno partition number Description Look for partition partno from disk. If found, increment reference count and return it. Context Don’t care. Return Pointer to the found partition on success, NULL if not found. Copyright
disk_flush_events – schedule immediate event checking and flushing Synopsis void disk_flush_events(struct gendisk *disk, unsigned int mask); Arguments disk disk to check and flush events for mask events to flush Description Schedule immediate event checking on disk if not blocked. Events in mask are scheduled to be cleared from the driver. Note that this doesn’t clear…
disk_expand_part_tbl – expand disk->part_tbl Synopsis int disk_expand_part_tbl(struct gendisk *disk, int partno); Arguments disk disk to expand part_tbl for partno expand such that this partno can fit in Description Expand disk->part_tbl such that partno can fit in. disk->part_tbl uses RCU to allow unlocked dereferencing for stats and other stuff. LOCKING: Matching bd_mutex locked, might sleep. Return…
disk_clear_events – synchronously check, clear and return pending events Synopsis unsigned int disk_clear_events(struct gendisk *disk, unsigned int mask); Arguments disk disk to fetch and clear events from mask mask of events to be fetched and cleared Description Disk events are synchronously checked and pending events in mask are cleared and returned. This ignores the block…
disk_block_events – block and flush disk event checking Synopsis void disk_block_events(struct gendisk *disk); Arguments disk disk to block events for Description On return from this function, it is guaranteed that event checking isn’t in progress and won’t happen until unblocked by disk_unblock_events. Events blocking is counted and the actual unblocking happens after the matching number…
disable_irq_nosync – disable an irq without waiting Synopsis void disable_irq_nosync(unsigned int irq); Arguments irq Interrupt to disable Description Disable the selected interrupt line. Disables and Enables are nested. Unlike disable_irq, this function does not ensure existing instances of the IRQ handler have completed before returning. This function may be called from IRQ context. Copyright
disable_irq – disable an irq and wait for completion Synopsis void disable_irq(unsigned int irq); Arguments irq Interrupt to disable Description Disable the selected interrupt line. Enables and Disables are nested. This function waits for any pending IRQ handlers for this interrupt to complete before returning. If you use this function while holding a resource the…
disable_hardirq – disables an irq and waits for hardirq completion Synopsis bool disable_hardirq(unsigned int irq); Arguments irq Interrupt to disable Description Disable the selected interrupt line. Enables and Disables are nested. This function waits for any pending hard IRQ handlers for this interrupt to complete before returning. If you use this function while holding a resource…
disable_cmf – switch off the channel measurement for a specific device Synopsis int disable_cmf(struct ccw_device *cdev); Arguments cdev The ccw device to be disabled Description Returns 0 for success or a negative error value. Context non-atomic Author Cornelia Huck <cornelia.huck [at] de.ibm.com> Author. Copyright
dget_dlock – get a reference to a dentry Synopsis struct dentry *dget_dlock(struct dentry *dentry); Arguments dentry dentry to get a reference to Description Given a dentry or NULL pointer increment the reference count if appropriate and return the dentry. A dentry will not be destroyed when it has references. Copyright
devm_snd_soc_register_platform – resource managed platform registration Synopsis int devm_snd_soc_register_platform(struct device *dev, const struct snd_soc_platform_driver *platform_drv); Arguments dev Device used to manage platform platform_drv platform to register Description Register a platform driver with automatic unregistration when the device is unregistered. Copyright
devm_snd_soc_register_component – resource managed component registration Synopsis int devm_snd_soc_register_component(struct device *dev, const struct snd_soc_component_driver *cmpnt_drv, struct snd_soc_dai_driver *dai_drv, int num_dai); Arguments dev Device used to manage component cmpnt_drv Component driver dai_drv DAI driver num_dai Number of DAIs to register Description Register a component with automatic unregistration when the device is unregistered. Copyright
devm_snd_soc_register_card – resource managed card registration Synopsis int devm_snd_soc_register_card(struct device *dev, struct snd_soc_card *card); Arguments dev Device used to manage card card Card to register Description Register a card with automatic unregistration when the device is unregistered. Copyright
devm_snd_dmaengine_pcm_register – resource managed dmaengine PCM registration Synopsis int devm_snd_dmaengine_pcm_register(struct device *dev, const struct snd_dmaengine_pcm_config *config, unsigned int flags); Arguments dev The parent device for the PCM device config Platform specific PCM configuration flags Platform specific quirks Description Register a dmaengine based PCM device with automatic unregistration when the device is unregistered. Copyright
devm_request_resource – request and reserve an I/O or memory resource Synopsis int devm_request_resource(struct device *dev, struct resource *root, struct resource *new); Arguments dev device for which to request the resource root root of the resource tree from which to request the resource new descriptor of the resource to request Description This is a device-managed version…
devm_release_resource – release a previously requested resource Synopsis void devm_release_resource(struct device *dev, struct resource *new); Arguments dev device for which to release the resource new descriptor of the resource to release Description Releases a resource previously requested using devm_request_resource. Copyright
devm_mdiobus_free – Resource-managed mdiobus_free Synopsis void devm_mdiobus_free(struct device *dev, struct mii_bus *bus); Arguments dev Device this mii_bus belongs to bus the mii_bus associated with the device Description Free mii_bus allocated with devm_mdiobus_alloc_size. Copyright
devm_mdiobus_alloc_size – Resource-managed mdiobus_alloc_size Synopsis struct mii_bus *devm_mdiobus_alloc_size(struct device *dev, int sizeof_priv); Arguments dev Device to allocate mii_bus for sizeof_priv Space to allocate for private structure. Description Managed mdiobus_alloc_size. mii_bus allocated with this function is automatically freed on driver detach. If an mii_bus allocated with this function needs to be freed separately, devm_mdiobus_free must be…
devm_iio_trigger_unregister – Resource-managed iio_trigger_unregister Synopsis void devm_iio_trigger_unregister(struct device *dev, struct iio_trigger *trig_info); Arguments dev device this iio_trigger belongs to trig_info the trigger associated with the device Description Unregister trigger registered with devm_iio_trigger_register. Author Daniel Baluta <daniel.baluta [at] intel.com> Author. Copyright