| ATA_HOST_ACTIVATE(9) | libata Library | ATA_HOST_ACTIVATE(9) |
NAME¶
ata_host_activate - start host, request IRQ and register it
SYNOPSIS¶
int ata_host_activate(struct ata_host * host, int irq, irq_handler_t irq_handler, unsigned long irq_flags, struct scsi_host_template * sht);
ARGUMENTS¶
host
target ATA host
irq
IRQ to request
irq_handler
irq_handler used when requesting IRQ
irq_flags
irq_flags used when requesting IRQ
sht
scsi_host_template to use when registering the host
DESCRIPTION¶
After allocating an ATA host and initializing it, most libata LLDs perform three steps to activate the host - start host, request IRQ and register it. This helper takes necessasry arguments and performs the three steps in one go.
An invalid IRQ skips the IRQ registration and expects the host to have set polling mode on the port. In this case, irq_handler should be NULL.
LOCKING¶
Inherited from calling layer (may sleep).
RETURNS¶
0 on success, -errno otherwise.
AUTHOR¶
Jeff Garzik
Author.
COPYRIGHT¶
| May 2024 | Kernel Hackers Manual 2.6. |