diff options
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 1daea1caf3e..c046c5e1e5d 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2846,7 +2846,7 @@ static int ata_dev_set_mode(struct ata_device *dev) } ehc->i.flags |= ATA_EHI_POST_SETMODE; - rc = ata_dev_revalidate(dev, 0); + rc = ata_dev_revalidate(dev, ATA_DEV_UNKNOWN, 0); ehc->i.flags &= ~ATA_EHI_POST_SETMODE; if (rc) return rc; @@ -3750,6 +3750,7 @@ int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags) /** * ata_dev_revalidate - Revalidate ATA device * @dev: device to revalidate + * @new_class: new class code * @readid_flags: read ID flags * * Re-read IDENTIFY page, make sure @dev is still attached to the @@ -3761,7 +3762,8 @@ int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags) * RETURNS: * 0 on success, negative errno otherwise */ -int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags) +int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class, + unsigned int readid_flags) { u64 n_sectors = dev->n_sectors; int rc; @@ -3769,6 +3771,15 @@ int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags) if (!ata_dev_enabled(dev)) return -ENODEV; + /* fail early if !ATA && !ATAPI to avoid issuing [P]IDENTIFY to PMP */ + if (ata_class_enabled(new_class) && + new_class != ATA_DEV_ATA && new_class != ATA_DEV_ATAPI) { + ata_dev_printk(dev, KERN_INFO, "class mismatch %u != %u\n", + dev->class, new_class); + rc = -ENODEV; + goto fail; + } + /* re-read ID */ rc = ata_dev_reread_id(dev, readid_flags); if (rc) |