Merge 4.4.262 into android-4.4-p

Changes in 4.4.262
	uapi: nfnetlink_cthelper.h: fix userspace compilation error
	ath9k: fix transmitting to stations in dynamic SMPS mode
	net: Fix gro aggregation for udp encaps with zero csum
	can: skb: can_skb_set_owner(): fix ref counting if socket was closed before setting skb ownership
	can: flexcan: assert FRZ bit in flexcan_chip_freeze()
	can: flexcan: enable RX FIFO after FRZ/HALT valid
	netfilter: x_tables: gpf inside xt_find_revision()
	cifs: return proper error code in statfs(2)
	floppy: fix lock_fdc() signal handling
	Revert "mm, slub: consider rest of partial list if acquire_slab() fails"
	futex: Change locking rules
	futex: Cure exit race
	futex: fix dead code in attach_to_pi_owner()
	net/mlx4_en: update moderation when config reset
	net: lapbether: Remove netif_start_queue / netif_stop_queue
	net: davicom: Fix regulator not turned off on failed probe
	net: davicom: Fix regulator not turned off on driver removal
	media: usbtv: Fix deadlock on suspend
	mmc: mxs-mmc: Fix a resource leak in an error handling path in 'mxs_mmc_probe()'
	mmc: mediatek: fix race condition between msdc_request_timeout and irq
	powerpc/perf: Record counter overflow always if SAMPLE_IP is unset
	PCI: xgene-msi: Fix race in installing chained irq handler
	s390/smp: __smp_rescan_cpus() - move cpumask away from stack
	scsi: libiscsi: Fix iscsi_prep_scsi_cmd_pdu() error handling
	ALSA: hda/hdmi: Cancel pending works before suspend
	ALSA: hda: Avoid spurious unsol event handling during S3/S4
	ALSA: usb-audio: Fix "cannot get freq eq" errors on Dell AE515 sound bar
	s390/dasd: fix hanging DASD driver unbind
	mmc: core: Fix partition switch time for eMMC
	scripts/recordmcount.{c,pl}: support -ffunction-sections .text.* section names
	libertas: fix a potential NULL pointer dereference
	Goodix Fingerprint device is not a modem
	usb: gadget: f_uac2: always increase endpoint max_packet_size by one audio slot
	usb: renesas_usbhs: Clear PIPECFG for re-enabling pipe with other EPNUM
	xhci: Improve detection of device initiated wake signal.
	USB: serial: io_edgeport: fix memory leak in edge_startup
	USB: serial: ch341: add new Product ID
	USB: serial: cp210x: add ID for Acuity Brands nLight Air Adapter
	USB: serial: cp210x: add some more GE USB IDs
	usbip: fix stub_dev to check for stream socket
	usbip: fix vhci_hcd to check for stream socket
	usbip: fix stub_dev usbip_sockfd_store() races leading to gpf
	staging: rtl8192u: fix ->ssid overflow in r8192_wx_set_scan()
	staging: rtl8188eu: prevent ->ssid overflow in rtw_wx_set_scan()
	staging: rtl8712: unterminated string leads to read overflow
	staging: rtl8188eu: fix potential memory corruption in rtw_check_beacon_data()
	staging: rtl8712: Fix possible buffer overflow in r8712_sitesurvey_cmd
	staging: rtl8192e: Fix possible buffer overflow in _rtl92e_wx_set_scan
	staging: comedi: addi_apci_1032: Fix endian problem for COS sample
	staging: comedi: addi_apci_1500: Fix endian problem for command sample
	staging: comedi: adv_pci1710: Fix endian problem for AI command data
	staging: comedi: das6402: Fix endian problem for AI command data
	staging: comedi: das800: Fix endian problem for AI command data
	staging: comedi: dmm32at: Fix endian problem for AI command data
	staging: comedi: me4000: Fix endian problem for AI command data
	staging: comedi: pcl711: Fix endian problem for AI command data
	staging: comedi: pcl818: Fix endian problem for AI command data
	NFSv4.2: fix return value of _nfs4_get_security_label()
	block: rsxx: fix error return code of rsxx_pci_probe()
	alpha: add $(src)/ rather than $(obj)/ to make source file path
	alpha: merge build rules of division routines
	alpha: make short build log available for division routines
	alpha: Package string routines together
	alpha: move exports to actual definitions
	alpha: get rid of tail-zeroing in __copy_user()
	alpha: switch __copy_user() and __do_clean_user() to normal calling conventions
	powerpc/64s: Fix instruction encoding for lis in ppc_function_entry()
	media: hdpvr: Fix an error handling path in hdpvr_probe()
	KVM: arm64: Fix exclusive limit for IPA size
	iio: imu: adis16400: release allocated memory on failure
	iio: imu: adis16400: fix memory leak
	xen/events: reset affinity of 2-level event when tearing it down
	xen/events: don't unmask an event channel when an eoi is pending
	xen/events: avoid handling the same event on two cpus at the same time
	Linux 4.4.262

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I0200586dffb4dee7db8d50887a87d6a8d9650b5a

1 files changed, 13 insertions, 3 deletions

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index e7dee8e3ca8b..bd6e3555c047 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1018,6 +1018,7 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
 	struct usb_hcd		*secondary_hcd;
 	int			retval = 0;
 	bool			comp_timer_running = false;
+	bool			pending_portevent = false;
 
 	if (!hcd->state)
 		return 0;
@@ -1151,13 +1152,22 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
 
  done:
 	if (retval == 0) {
-		/* Resume root hubs only when have pending events. */
-		if (xhci_pending_portevent(xhci)) {
+		/*
+		 * Resume roothubs only if there are pending events.
+		 * USB 3 devices resend U3 LFPS wake after a 100ms delay if
+		 * the first wake signalling failed, give it that chance.
+		 */
+		pending_portevent = xhci_pending_portevent(xhci);
+		if (!pending_portevent) {
+			msleep(120);
+			pending_portevent = xhci_pending_portevent(xhci);
+		}
+
+		if (pending_portevent) {
 			usb_hcd_resume_root_hub(xhci->shared_hcd);
 			usb_hcd_resume_root_hub(hcd);
 		}
 	}
-
 	/*
 	 * If system is subject to the Quirk, Compliance Mode Timer needs to
 	 * be re-initialized Always after a system resume. Ports are subject