1ATA_HOST_ACTIVATE(9)            libata Library            ATA_HOST_ACTIVATE(9)
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NAME

6       ata_host_activate - start host, request IRQ and register it
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SYNOPSIS

9       int ata_host_activate(struct ata_host * host, int irq,
10                             irq_handler_t irq_handler,
11                             unsigned long irq_flags,
12                             struct scsi_host_template * sht);
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ARGUMENTS

15       host
16           target ATA host
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18       irq
19           IRQ to request
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21       irq_handler
22           irq_handler used when requesting IRQ
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24       irq_flags
25           irq_flags used when requesting IRQ
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27       sht
28           scsi_host_template to use when registering the host
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DESCRIPTION

31       After allocating an ATA host and initializing it, most libata LLDs
32       perform three steps to activate the host - start host, request IRQ and
33       register it. This helper takes necessasry arguments and performs the
34       three steps in one go.
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36       An invalid IRQ skips the IRQ registration and expects the host to have
37       set polling mode on the port. In this case, irq_handler should be NULL.
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LOCKING

40       Inherited from calling layer (may sleep).
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RETURNS

43       0 on success, -errno otherwise.
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AUTHOR

46       Jeff Garzik
47           Author.
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50Kernel Hackers Manual 2.6.       November 2011            ATA_HOST_ACTIVATE(9)
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