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ata_dev_xfermask(9) [centos man page]

ATA_DEV_XFERMASK(9)					       libata Core Internals					       ATA_DEV_XFERMASK(9)

NAME
ata_dev_xfermask - Compute supported xfermask of the given device SYNOPSIS
void ata_dev_xfermask(struct ata_device * dev); ARGUMENTS
dev Device to compute xfermask for DESCRIPTION
Compute supported xfermask of dev and store it in dev->*_mask. This function is responsible for applying all known limits including host controller limits, device blacklist, etc... LOCKING
None. AUTHOR
Jeff Garzik Author. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 ATA_DEV_XFERMASK(9)

Check Out this Related Man Page

DEVICE_SCHEDULE_CALL(9) 				   Device drivers infrastructure				   DEVICE_SCHEDULE_CALL(9)

NAME
device_schedule_callback_owner - helper to schedule a callback for a device SYNOPSIS
int device_schedule_callback_owner(struct device * dev, void (*func) (struct device *), struct module * owner); ARGUMENTS
dev device. func callback function to invoke later. owner module owning the callback routine DESCRIPTION
Attribute methods must not unregister themselves or their parent device (which would amount to the same thing). Attempts to do so will deadlock, since unregistration is mutually exclusive with driver callbacks. Instead methods can call this routine, which will attempt to allocate and schedule a workqueue request to call back func with dev as its argument in the workqueue's process context. dev will be pinned until func returns. This routine is usually called via the inline device_schedule_callback, which automatically sets owner to THIS_MODULE. Returns 0 if the request was submitted, -ENOMEM if storage could not be allocated, -ENODEV if a reference to owner isn't available. NOTE
This routine won't work if CONFIG_SYSFS isn't set! It uses an underlying sysfs routine (since it is intended for use by attribute methods), and if sysfs isn't available you'll get nothing but -ENOSYS. COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 DEVICE_SCHEDULE_CALL(9)
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