1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index d2ba439cfe54..ffdd32d22602 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -1547,6 +1547,10 @@ static bool piix_broken_system_poweroff(struct pci_dev *pdev)
 
 static int prefer_ms_hyperv = 1;
 module_param(prefer_ms_hyperv, int, 0);
+MODULE_PARM_DESC(prefer_ms_hyperv,
+        "Prefer Hyper-V paravirtualization drivers instead of ATA, "
+        "0 - Use ATA drivers, "
+        "1 (Default) - Use the paravirtualization drivers.");
 
 static void piix_ignore_devices_quirk(struct ata_host *host)
 {