ata_dev_read_id
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## Name

ata_dev_read_id — Read ID data from the specified device

## Synopsis

`int ata_dev_read_id (` | struct ata_device * dev,
| unsigned int * p_class,
| unsigned int flags,
| u16 * id`)`;

## Arguments

`dev`

  target device

`p_class`

  pointer to class of the target device (may be changed)

`flags`

  ATA_READID_* flags

`id`

  buffer to read IDENTIFY data into

## Description

Read ID data from the specified device. ATA_CMD_ID_ATA is performed on ATA devices and ATA_CMD_ID_ATAPI on ATAPI devices. This function also issues ATA_CMD_INIT_DEV_PARAMS for pre-ATA4 drives.

## FIXME

ATA_CMD_ID_ATA is optional for early drives and right now we abort if we hit that case.

## LOCKING

Kernel thread context (may sleep)

## RETURNS

0 on success, -errno otherwise.

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