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Kai-Heng Feng a81f69d6ff xhci: Return if xHCI doesn't support LPM 
commit f0c472a6da upstream.

Just return if xHCI is quirked to disable LPM. We can save some time
from reading registers and doing spinlocks.

Add stable tag as we want this patch together with the next one,
"Poll for U0 after disabling USB2 LPM" which fixes a suspend issue
for some USB2 LPM devices

Cc: stable@vger.kernel.org
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20200624135949.22611-5-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-06-30 23:17:09 -04:00
..
whci USB: host: whci: remove redundant variable t 2018-07-13 15:41:56 +02:00
bcma-hcd.c
ehci-atmel.c
ehci-dbg.c USB: ehci-hcd: no need to check return value of debugfs_create functions 2018-05-31 12:54:22 +02:00
ehci-exynos.c usb: host: ehci-exynos: Fix error check in exynos_ehci_probe() 2020-06-30 23:17:08 -04:00
ehci-fsl.c
ehci-fsl.h
ehci-grlib.c
ehci-hcd.c USB: ehci-hcd: Add get_resuming_ports method 2018-06-25 21:44:43 +08:00
ehci-hub.c USB: ehci-hcd: Add get_resuming_ports method 2018-06-25 21:44:43 +08:00
ehci-mem.c Revert "usb: host: ehci: Use dma_pool_zalloc()" 2018-05-04 14:35:12 -07:00
ehci-mv.c
ehci-mxc.c USB: host: ehci-mxc: Add error handling in ehci_mxc_drv_probe() 2020-06-25 15:32:57 +02:00
ehci-npcm7xx.c USB: host: ehci-npcm7xx: Fix some error codes in probe 2018-06-28 19:32:42 +09:00
ehci-omap.c usb: ehci-omap: Fix deferred probe for phy handling 2019-12-05 09:20:20 +01:00
ehci-orion.c
ehci-pci.c USB: ehci: reopen solution for Synopsys HC bug 2020-06-30 23:17:07 -04:00
ehci-platform.c usb/ehci-platform: Set PM runtime as active on resume 2020-06-25 15:33:05 +02:00
ehci-pmcmsp.c
ehci-ppc-of.c
ehci-ps3.c powerpc/ps3: Set driver coherent_dma_mask 2018-07-20 12:50:37 +10:00
ehci-q.c USB: EHCI: Do not return -EPIPE when hub is disconnected 2019-12-31 16:36:23 +01:00
ehci-sched.c usb: host: ehci-sched: remove redundant pointer dev 2018-07-13 15:41:56 +02:00
ehci-sh.c
ehci-spear.c
ehci-st.c
ehci-sysfs.c
ehci-tegra.c usb: tegra: Move utmi-pads reset from ehci-tegra to tegra-phy 2018-04-23 09:50:57 +02:00
ehci-timer.c
ehci-w90x900.c
ehci-xilinx-of.c
ehci.h
fhci-dbg.c USB: fhci-hcd: no need to check return value of debugfs_create functions 2018-05-31 12:54:22 +02:00
fhci-hcd.c
fhci-hub.c
fhci-mem.c
fhci-q.c
fhci-sched.c
fhci-tds.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
fhci.h USB: fhci-hcd: no need to check return value of debugfs_create functions 2018-05-31 12:54:22 +02:00
fotg210-hcd.c usb: host: fotg2: restart hcd after port reset 2019-09-06 10:21:59 +02:00
fotg210.h
fsl-mph-dr-of.c
hwa-hc.c usb: wusbcore: fix unbalanced get/put cluster_id 2019-07-31 07:27:10 +02:00
imx21-dbg.c USB: imx21-hcd: no need to check return value of debugfs_create functions 2018-05-31 12:54:22 +02:00
imx21-hcd.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
imx21-hcd.h
isp116x-hcd.c USB: isp116x-hcd: no need to check return value of debugfs_create functions 2018-05-31 12:54:21 +02:00
isp116x.h
isp1362-hcd.c
isp1362.h usb: isp1362: remove blackfin arch glue 2018-03-26 15:57:14 +02:00
Kconfig USB host: Add USB ehci support for nuvoton npcm7xx platform 2018-06-25 21:59:15 +08:00
Makefile USB host: Add USB ehci support for nuvoton npcm7xx platform 2018-06-25 21:59:15 +08:00
max3421-hcd.c
ohci-at91.c usb: host: ohci-at91: fix request of irq for optional gpio 2018-11-13 11:08:33 -08:00
ohci-da8xx.c
ohci-dbg.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
ohci-exynos.c usb: host: exynos: Remove support for Exynos5440 2018-07-24 18:44:00 +02:00
ohci-hcd.c usb: host: ohci: fix a race condition between shutdown and irq 2019-09-06 10:22:15 +02:00
ohci-hub.c
ohci-mem.c
ohci-nxp.c
ohci-omap.c
ohci-pci.c
ohci-platform.c usb/ohci-platform: Fix a warning when hibernating 2020-06-25 15:32:57 +02:00
ohci-ppc-of.c
ohci-ps3.c powerpc/ps3: Set driver coherent_dma_mask 2018-07-20 12:50:37 +10:00
ohci-pxa27x.c
ohci-q.c
ohci-s3c2410.c
ohci-sa1111.c
ohci-sm501.c USB: ohci-sm501: Add missed iounmap() in remove 2020-06-30 23:17:07 -04:00
ohci-spear.c
ohci-st.c
ohci-tmio.c
ohci.h USB: ohci: no need to check return value of debugfs_create functions 2018-05-31 12:54:21 +02:00
oxu210hp-hcd.c
oxu210hp.h
pci-quirks.c usb: pci-quirks: Correct AMD PLL quirk detection 2019-07-31 07:27:10 +02:00
pci-quirks.h Revert "xhci: Reset Renesas uPD72020x USB controller for 32-bit DMA issue" 2018-06-01 13:24:51 +02:00
r8a66597-hcd.c usb: r8a66597: Fix a possible concurrency use-after-free bug in r8a66597_endpoint_disable() 2019-01-09 17:38:39 +01:00
r8a66597.h
sl811-hcd.c USB: host: sl811: Re-use DEFINE_SHOW_ATTRIBUTE() macro 2018-03-16 15:40:19 +01:00
sl811.h
sl811_cs.c
ssb-hcd.c
u132-hcd.c usb: u132-hcd: fix resource leak 2019-05-04 09:20:21 +02:00
uhci-debug.c
uhci-grlib.c
uhci-hcd.c USB: uhci: no need to check return value of debugfs_create functions 2018-05-31 12:54:21 +02:00
uhci-hcd.h
uhci-hub.c
uhci-pci.c
uhci-platform.c
uhci-q.c
xhci-dbg.c
xhci-dbgcap.c usb: xhci: dbc: Don't free all memory with spinlock held 2019-04-03 06:26:27 +02:00
xhci-dbgcap.h usb: xhci: dbc: Add SPDX identifiers to dbc files 2018-05-24 18:03:07 +02:00
xhci-dbgtty.c usb: xhci: dbc: Add SPDX identifiers to dbc files 2018-05-24 18:03:07 +02:00
xhci-debugfs.c usb: xhci: fix __le32/__le64 accessors in debugfs code 2019-11-06 13:06:17 +01:00
xhci-debugfs.h
xhci-ext-caps.c xhci: Add Intel extended cap / otg phy mux handling 2018-03-22 13:40:10 +01:00
xhci-ext-caps.h xhci: Add Intel extended cap / otg phy mux handling 2018-03-22 13:40:10 +01:00
xhci-histb.c xhci: Fix leaking USB3 shared_hcd at xhci removal 2018-12-01 09:37:25 +01:00
xhci-hub.c xhci: prevent bus suspend if a roothub port detected a over-current condition 2020-04-29 16:31:34 +02:00
xhci-mem.c xhci: Fix memory leak when caching protocol extended capability PSI tables - take 2 2020-02-28 16:38:46 +01:00
xhci-mtk-sch.c usb: xhci-mtk: fix ISOC error when interval is zero 2019-11-20 18:47:52 +01:00
xhci-mtk.c usb: host: xhci-mtk: avoid runtime suspend when removing hcd 2020-06-30 23:17:07 -04:00
xhci-mtk.h
xhci-mvebu.c
xhci-mvebu.h
xhci-pci.c usb: xhci: apply XHCI_SUSPEND_DELAY to AMD XHCI controller 1022:145c 2020-03-25 08:06:09 +01:00
xhci-plat.c usb/xhci-plat: Set PM runtime as active on resume 2020-06-25 15:33:05 +02:00
xhci-plat.h
xhci-rcar.c usb: host: xhci: rcar: Fix typo in compatible string matching 2019-09-06 10:22:16 +02:00
xhci-rcar.h
xhci-ring.c usb: xhci: Fix NULL pointer dereference when enqueuing trbs from urb sg list 2020-05-20 08:18:48 +02:00
xhci-tegra.c usb: host: xhci-tegra: Set DMA mask correctly 2019-09-21 07:17:04 +02:00
xhci-trace.c
xhci-trace.h xhci: Do not open code __print_symbolic() in xhci trace events 2020-03-25 08:06:12 +01:00
xhci.c xhci: Return if xHCI doesn't support LPM 2020-06-30 23:17:09 -04:00
xhci.h xhci: Fix incorrect EP_STATE_MASK 2020-06-30 23:17:08 -04:00