--- zzzz-none-000/linux-5.15.111/drivers/usb/host/xhci-mem.c	2023-05-11 14:00:40.000000000 +0000
+++ puma7-atom-6670-761/linux-5.15.111/drivers/usb/host/xhci-mem.c	2024-02-07 10:23:22.000000000 +0000
@@ -2215,7 +2215,9 @@
 		xhci->ext_caps[xhci->num_ext_caps++] = temp;
 
 	if ((xhci->hci_version >= 0x100) && (major_revision != 0x03) &&
-		 (temp & XHCI_HLC)) {
+		 (temp & XHCI_HLC) &&
+		 /*= 20180820 AVM/WKR : Do not allow LPM =*/
+		 !IS_ENABLED(CONFIG_AVM_KERNEL)) {
 		xhci_dbg_trace(xhci, trace_xhci_dbg_init,
 			       "xHCI 1.0: support USB2 hardware lpm");
 		xhci->hw_lpm_support = 1;