diff options
| -rw-r--r-- | drivers/ata/libata-core.c | 47 | ||||
| -rw-r--r-- | drivers/ata/libata.h | 3 |
2 files changed, 36 insertions, 14 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 4166407eb47..6f266c8179e 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -3675,8 +3675,8 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class, } /** - * ata_dev_revalidate - Revalidate ATA device - * @dev: device to revalidate + * ata_dev_reread_id - Re-read IDENTIFY data + * @adev: target ATA device * @readid_flags: read ID flags * * Re-read IDENTIFY page and make sure @dev is still attached to @@ -3688,29 +3688,50 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class, * RETURNS: * 0 on success, negative errno otherwise */ -int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags) +int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags) { unsigned int class = dev->class; u16 *id = (void *)dev->ap->sector_buf; int rc; - if (!ata_dev_enabled(dev)) { - rc = -ENODEV; - goto fail; - } - /* read ID data */ rc = ata_dev_read_id(dev, &class, readid_flags, id); if (rc) - goto fail; + return rc; /* is the device still there? */ - if (!ata_dev_same_device(dev, class, id)) { - rc = -ENODEV; - goto fail; - } + if (!ata_dev_same_device(dev, class, id)) + return -ENODEV; memcpy(dev->id, id, sizeof(id[0]) * ATA_ID_WORDS); + return 0; +} + +/** + * ata_dev_revalidate - Revalidate ATA device + * @dev: device to revalidate + * @readid_flags: read ID flags + * + * Re-read IDENTIFY page, make sure @dev is still attached to the + * port and reconfigure it according to the new IDENTIFY page. + * + * LOCKING: + * Kernel thread context (may sleep) + * + * RETURNS: + * 0 on success, negative errno otherwise + */ +int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags) +{ + int rc; + + if (!ata_dev_enabled(dev)) + return -ENODEV; + + /* re-read ID */ + rc = ata_dev_reread_id(dev, readid_flags); + if (rc) + goto fail; /* configure device according to the new ID */ rc = ata_dev_configure(dev); diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h index 8b71b73a199..13cb0c9af68 100644 --- a/drivers/ata/libata.h +++ b/drivers/ata/libata.h @@ -76,7 +76,8 @@ extern unsigned ata_exec_internal_sg(struct ata_device *dev, extern unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd); extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class, unsigned int flags, u16 *id); -extern int ata_dev_revalidate(struct ata_device *dev, unsigned int flags); +extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags); +extern int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags); extern int ata_dev_configure(struct ata_device *dev); extern int sata_down_spd_limit(struct ata_port *ap); extern int sata_set_spd_needed(struct ata_port *ap); |