diff options
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 376dbd80cc93..8b08e7bdd24d 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2016,6 +2016,7 @@ int ata_dev_configure(struct ata_device *dev) else if (dev->class == ATA_DEV_ATAPI) { const char *cdb_intr_string = ""; const char *atapi_an_string = ""; + u32 sntf; rc = atapi_cdb_len(id); if ((rc < 12) || (rc > ATAPI_CDB_LEN)) { @@ -2027,11 +2028,14 @@ int ata_dev_configure(struct ata_device *dev) } dev->cdb_len = (unsigned int) rc; - /* - * check to see if this ATAPI device supports - * Asynchronous Notification + /* Enable ATAPI AN if both the host and device have + * the support. If PMP is attached, SNTF is required + * to enable ATAPI AN to discern between PHY status + * changed notifications and ATAPI ANs. */ - if ((ap->flags & ATA_FLAG_AN) && ata_id_has_atapi_AN(id)) { + if ((ap->flags & ATA_FLAG_AN) && ata_id_has_atapi_AN(id) && + (!ap->nr_pmp_links || + sata_scr_read(&ap->link, SCR_NOTIFICATION, &sntf) == 0)) { unsigned int err_mask; /* issue SET feature command to turn this on */ @@ -7248,6 +7252,7 @@ EXPORT_SYMBOL_GPL(ata_port_schedule_eh); EXPORT_SYMBOL_GPL(ata_link_abort); EXPORT_SYMBOL_GPL(ata_port_abort); EXPORT_SYMBOL_GPL(ata_port_freeze); +EXPORT_SYMBOL_GPL(sata_async_notification); EXPORT_SYMBOL_GPL(ata_eh_freeze_port); EXPORT_SYMBOL_GPL(ata_eh_thaw_port); EXPORT_SYMBOL_GPL(ata_eh_qc_complete); |