1 files changed, 14 insertions, 3 deletions

diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index 1f84e40fa6a..5a2b2af4d0c 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2557,7 +2557,11 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
 
         /* reset */
         if (reset) {
-                ata_eh_freeze_port(ap);
+                /* if PMP is attached, this function only deals with
+                 * downstream links, port should stay thawed.
+                 */
+                if (!ap->nr_pmp_links)
+                        ata_eh_freeze_port(ap);
 
                 ata_port_for_each_link(link, ap) {
                         struct ata_eh_context *ehc = &link->eh_context;
@@ -2575,7 +2579,8 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
                         }
                 }
 
-                ata_eh_thaw_port(ap);
+                if (!ap->nr_pmp_links)
+                        ata_eh_thaw_port(ap);
         }
 
         /* the rest */
@@ -2610,8 +2615,14 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
                 if (ata_eh_handle_dev_fail(dev, rc))
                         nr_disabled_devs++;
 
-                if (ap->pflags & ATA_PFLAG_FROZEN)
+                if (ap->pflags & ATA_PFLAG_FROZEN) {
+                        /* PMP reset requires working host port.
+                         * Can't retry if it's frozen.
+                         */
+                        if (ap->nr_pmp_links)
+                                goto out;
                         break;
+                }
         }
 
         if (nr_failed_devs) {