1 files changed, 5 insertions, 0 deletions

diff --git a/firmware/drivers/ata.c b/firmware/drivers/ata.c
index 2116855233..39c305c3df 100644
--- a/firmware/drivers/ata.c
+++ b/firmware/drivers/ata.c
@@ -801,6 +801,11 @@ bool ata_disk_is_active(void)
 
 void ata_sleepnow(void)
 {
+    /* Don't enter sleep if the device doesn't support
+       power management. */
+    if (!(identify_info[82] & (1 << 3)))
+       return;
+
     if (ata_state >= ATA_SPINUP) {
         mutex_lock(&ata_mtx);
         if (ata_state == ATA_ON) {