1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index eb8b94016c01..94919ad03df1 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -3507,6 +3507,8 @@ static void ata_eh_handle_port_suspend(struct ata_port *ap)
  */
 static void ata_eh_handle_port_resume(struct ata_port *ap)
 {
+        struct ata_link *link;
+        struct ata_device *dev;
         unsigned long flags;
         int rc = 0;
 
@@ -3521,6 +3523,17 @@ static void ata_eh_handle_port_resume(struct ata_port *ap)
 
         WARN_ON(!(ap->pflags & ATA_PFLAG_SUSPENDED));
 
+        /*
+         * Error timestamps are in jiffies which doesn't run while
+         * suspended and PHY events during resume isn't too uncommon.
+         * When the two are combined, it can lead to unnecessary speed
+         * downs if the machine is suspended and resumed repeatedly.
+         * Clear error history.
+         */
+        ata_for_each_link(link, ap, HOST_FIRST)
+                ata_for_each_dev(dev, link, ALL)
+                        ata_ering_clear(&dev->ering);
+
         ata_acpi_set_state(ap, PMSG_ON);
 
         if (ap->ops->port_resume)