diff --git a/[refs] b/[refs]
index 807b8fd03c3a..bf5a0c302495 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4f0eee4d877e3b617b6a22d209d52b3dfca2b2a7
+refs/heads/master: 8f22a72bf52e76d6bcd11bf9e695fdde61bd454c
diff --git a/trunk/drivers/ide/ide-acpi.c b/trunk/drivers/ide/ide-acpi.c
index e07b189f3ec8..0f6fb6b72dd9 100644
--- a/trunk/drivers/ide/ide-acpi.c
+++ b/trunk/drivers/ide/ide-acpi.c
@@ -710,6 +710,8 @@ void ide_acpi_port_init_devices(ide_hwif_t *hwif)
 	for (i = 0; i < MAX_DRIVES; i++) {
 		drive = &hwif->drives[i];
 
+		memset(drive->acpidata, 0, sizeof(*drive->acpidata));
+
 		if (!drive->present)
 			continue;