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)

Return

0 on success, -errno otherwise.