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2022-01-12Merge tag 'usb-5.17-rc1' of ↵Linus Torvalds2-3/+3
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB and Thunderbolt updates from Greg KH: "Here is the big set of USB and Thunderbolt driver changes for 5.17-rc1. Nothing major in here, just lots of little updates and cleanups. These include: - some USB header fixes picked from Ingo's header-splitup work - more USB4/Thunderbolt hardware support added - USB gadget driver updates and additions - USB typec additions (includes some acpi changes, which were acked by the ACPI maintainer) - core USB fixes as found by syzbot that were too late for 5.16-final - USB dwc3 driver updates - USB dwc2 driver updates - platform_get_irq() conversions of some USB drivers - other minor USB driver updates and additions All of these have been in linux-next for a while with no reported issues" * tag 'usb-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (111 commits) docs: ABI: fixed formatting in configfs-usb-gadget-uac2 usb: gadget: u_audio: Subdevice 0 for capture ctls usb: gadget: u_audio: fix calculations for small bInterval usb: dwc2: gadget: initialize max_speed from params usb: dwc2: do not gate off the hardware if it does not support clock gating usb: dwc3: qcom: Fix NULL vs IS_ERR checking in dwc3_qcom_probe headers/deps: USB: Optimize <linux/usb/ch9.h> dependencies, remove <linux/device.h> USB: common: debug: add needed kernel.h include headers/prep: Fix non-standard header section: drivers/usb/host/ohci-tmio.c headers/prep: Fix non-standard header section: drivers/usb/cdns3/core.h headers/prep: usb: gadget: Fix namespace collision USB: core: Fix bug in resuming hub's handling of wakeup requests USB: Fix "slab-out-of-bounds Write" bug in usb_hcd_poll_rh_status usb: dwc3: dwc3-qcom: Add missing platform_device_put() in dwc3_qcom_acpi_register_core usb: gadget: clear related members when goto fail usb: gadget: don't release an existing dev->buf usb: dwc2: Simplify a bitmap declaration usb: Remove usb_for_each_port() usb: typec: port-mapper: Convert to the component framework usb: Link the ports to the connectors they are attached to ...
2022-01-10Merge tag 'drivers-5.17' of ↵Linus Torvalds1-7/+46
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM SoC driver updates from Arnd Bergmann: "There are cleanups and minor bugfixes across several SoC specific drivers, for Qualcomm, Samsung, NXP i.MX, AT91, Tegra, Keystone, Renesas, ZynqMP Noteworthy new features are: - The op-tee firmware driver gains support for asynchronous notifications from secure-world firmware. - Qualcomm platforms gain support for new SoC types in various drivers: power domain, cache controller, RPM sleep, soc-info - Samsung SoC drivers gain support for new SoCs in ChipID and PMU, as well as a new USIv2 driver that handles various types of serial communiction (uart, i2c, spi) - Renesas adds support for R-Car S4-8 (R8A779F0) in multiple drivers, as well as memory controller support for RZ/G2L (R9A07G044). - Apple M1 gains support for the PMGR power management driver" * tag 'drivers-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (94 commits) soc: qcom: rpmh-rsc: Fix typo in a comment soc: qcom: socinfo: Add SM6350 and SM7225 dt-bindings: arm: msm: Don't mark LLCC interrupt as required dt-bindings: firmware: scm: Add SM6350 compatible dt-bindings: arm: msm: Add LLCC for SM6350 soc: qcom: rpmhpd: Sort power-domain definitions and lists soc: qcom: rpmhpd: Remove mx/cx relationship on sc7280 soc: qcom: rpmhpd: Rename rpmhpd struct names soc: qcom: rpmhpd: sm8450: Add the missing .peer for sm8450_cx_ao soc: qcom: socinfo: add SM8450 ID soc: qcom: rpmhpd: Add SM8450 power domains dt-bindings: power: rpmpd: Add SM8450 to rpmpd binding soc: qcom: smem: Update max processor count dt-bindings: arm: qcom: Document SM8450 SoC and boards dt-bindings: firmware: scm: Add SM8450 compatible dt-bindings: arm: cpus: Add kryo780 compatible soc: qcom: rpmpd: Add support for sm6125 dt-bindings: qcom-rpmpd: Add sm6125 power domains soc: qcom: aoss: constify static struct thermal_cooling_device_ops PM: AVS: qcom-cpr: Use div64_ul instead of do_div ...
2021-12-17usb: chipidea: Set the DT node on the child deviceRob Herring1-0/+1
The ChipIdea glue drivers just copy the glue resources to the "ci_hdrc" child device. Instead, set the child device's DT node pointer to the parent device's node so that platform_get_irq() can find the IRQ resources in the DT. This removes the need for statically populating the IRQ resources from the DT which has been deprecated for some time. Acked-by: Peter Chen <[email protected]> Signed-off-by: Rob Herring <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-12-16usb: chipidea: tegra: Add runtime PM and OPP supportDmitry Osipenko1-7/+46
The Tegra USB controller belongs to the core power domain and we're going to enable GENPD support for the core domain. Now USB controller must be resumed using runtime PM API in order to initialize the USB power state. We already support runtime PM for the CI device, but CI's PM is separated from the RPM managed by tegra-usb driver. Add runtime PM and OPP support to the driver. Acked-by: Peter Chen <[email protected]> Reviewed-by: Ulf Hansson <[email protected]> Signed-off-by: Dmitry Osipenko <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2021-11-29Merge 5.16-rc3 into usb-nextGreg Kroah-Hartman1-9/+9
We need the USB driver fixes in here as well. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-11-17usb: chipidea: ci_hdrc_imx: fix potential error pointer dereference in probeDan Carpenter1-9/+9
If the first call to devm_usb_get_phy_by_phandle(dev, "fsl,usbphy", 0) fails with something other than -ENODEV then it leads to an error pointer dereference. For those errors we should just jump directly to the error handling. Fixes: 8253a34bfae3 ("usb: chipidea: ci_hdrc_imx: Also search for 'phys' phandle") Cc: stable <[email protected]> Signed-off-by: Dan Carpenter <[email protected]> Link: https://lore.kernel.org/r/20211117074923.GF5237@kili Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-11-17usb: Remove redundant 'flush_workqueue()' callsChristophe JAILLET1-3/+2
'destroy_workqueue()' already drains the queue before destroying it, so there is no need to flush it explicitly. Remove the redundant 'flush_workqueue()' calls. This was generated with coccinelle: @@ expression E; @@ - flush_workqueue(E); destroy_workqueue(E); Acked-by: Shuah Khan <[email protected]> Acked-by: Peter Chen <[email protected]> # for chipidea part Signed-off-by: Christophe JAILLET <[email protected]> Link: https://lore.kernel.org/r/563123a8117d6cafae3f134e497587bd2b8bb7f4.1636734453.git.christophe.jaillet@wanadoo.fr Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-10-22USB: chipidea: fix interrupt deadlockJohan Hovold1-7/+16
Chipidea core was calling the interrupt handler from non-IRQ context with interrupts enabled, something which can lead to a deadlock if there's an actual interrupt trying to take a lock that's already held (e.g. the controller lock in udc_irq()). Add a wrapper that can be used to fake interrupts instead of calling the handler directly. Fixes: 3ecb3e09b042 ("usb: chipidea: Use extcon framework for VBUS and ID detect") Fixes: 876d4e1e8298 ("usb: chipidea: core: add wakeup support for extcon") Cc: Peter Chen <[email protected]> Cc: [email protected] # 4.4 Signed-off-by: Johan Hovold <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-10-11Merge 5.15-rc5 into usb-nextGreg Kroah-Hartman1-5/+10
We need the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-10-10usb: chipidea: udc: make controller hardware endpoint primedPiyush Mehta1-0/+8
Root-cause: There is an issue like endpoint is not recognized as primed, when bus have more pressure and the add dTD tripwire semaphore (ATDTW bit in USBCMD register) that can cause the controller to ignore a dTD that is added to a primed endpoint. This issue observed with the Windows10 host machine. Workaround: The software must implement a periodic cycle, and check for each dTD, if the endpoint is primed. It can do this by reading the corresponding bits in the ENDPTPRIME and ENDPTSTAT registers. If these bits are read at 0, the software needs to re-prime the endpoint by writing 1 to the corresponding bit in the ENDPTPRIME register. Added conditional revision check of 2.20[CI_REVISION_22]. Link: https://lore.kernel.org/linux-usb/SJ0PR02MB8644CBBA848A0F68323F1AA5D4D99@SJ0PR02MB8644.namprd02.prod.outlook.com/ Acked-by: Peter Chen <[email protected]> Signed-off-by: Piyush Mehta <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-10-05usb: chipidea: ci_hdrc_imx: Also search for 'phys' phandleFabio Estevam1-5/+10
When passing 'phys' in the devicetree to describe the USB PHY phandle (which is the recommended way according to Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt) the following NULL pointer dereference is observed on i.MX7 and i.MX8MM: [ 1.489344] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000098 [ 1.498170] Mem abort info: [ 1.500966] ESR = 0x96000044 [ 1.504030] EC = 0x25: DABT (current EL), IL = 32 bits [ 1.509356] SET = 0, FnV = 0 [ 1.512416] EA = 0, S1PTW = 0 [ 1.515569] FSC = 0x04: level 0 translation fault [ 1.520458] Data abort info: [ 1.523349] ISV = 0, ISS = 0x00000044 [ 1.527196] CM = 0, WnR = 1 [ 1.530176] [0000000000000098] user address but active_mm is swapper [ 1.536544] Internal error: Oops: 96000044 [#1] PREEMPT SMP [ 1.542125] Modules linked in: [ 1.545190] CPU: 3 PID: 7 Comm: kworker/u8:0 Not tainted 5.14.0-dirty #3 [ 1.551901] Hardware name: Kontron i.MX8MM N801X S (DT) [ 1.557133] Workqueue: events_unbound deferred_probe_work_func [ 1.562984] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO BTYPE=--) [ 1.568998] pc : imx7d_charger_detection+0x3f0/0x510 [ 1.573973] lr : imx7d_charger_detection+0x22c/0x510 This happens because the charger functions check for the phy presence inside the imx_usbmisc_data structure (data->usb_phy), but the chipidea core populates the usb_phy passed via 'phys' inside 'struct ci_hdrc' (ci->usb_phy) instead. This causes the NULL pointer dereference inside imx7d_charger_detection(). Fix it by also searching for 'phys' in case 'fsl,usbphy' is not found. Tested on a imx7s-warp board. Fixes: 746f316b753a ("usb: chipidea: introduce imx7d USB charger detection") Cc: [email protected] Reported-by: Heiko Thiery <[email protected]> Tested-by: Frieder Schrempf <[email protected]> Reviewed-by: Frieder Schrempf <[email protected]> Acked-by: Peter Chen <[email protected]> Signed-off-by: Fabio Estevam <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-08-21usb: chipidea: host: fix port index underflow and UBSAN complainsLi Jun1-3/+11
If wIndex is 0 (and it often is), these calculations underflow and UBSAN complains, here resolve this by not decrementing the index when it is equal to 0, this copies the solution from commit 85e3990bea49 ("USB: EHCI: avoid undefined pointer arithmetic and placate UBSAN") Reported-by: Zhipeng Wang <[email protected]> Signed-off-by: Li Jun <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Peter Chen <[email protected]>
2021-06-21Merge tag 'v5.13-rc7' into usb-nextGreg Kroah-Hartman1-2/+14
We need the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-06-16usb: chipidea: imx: Fix Battery Charger 1.2 CDP detectionBreno Lima1-2/+14
i.MX8MM cannot detect certain CDP USB HUBs. usbmisc_imx.c driver is not following CDP timing requirements defined by USB BC 1.2 specification and section 3.2.4 Detection Timing CDP. During Primary Detection the i.MX device should turn on VDP_SRC and IDM_SINK for a minimum of 40ms (TVDPSRC_ON). After a time of TVDPSRC_ON, the i.MX is allowed to check the status of the D- line. Current implementation is waiting between 1ms and 2ms, and certain BC 1.2 complaint USB HUBs cannot be detected. Increase delay to 40ms allowing enough time for primary detection. During secondary detection the i.MX is required to disable VDP_SRC and IDM_SNK, and enable VDM_SRC and IDP_SINK for at least 40ms (TVDMSRC_ON). Current implementation is not disabling VDP_SRC and IDM_SNK, introduce disable sequence in imx7d_charger_secondary_detection() function. VDM_SRC and IDP_SINK should be enabled for at least 40ms (TVDMSRC_ON). Increase delay allowing enough time for detection. Cc: <[email protected]> Fixes: 746f316b753a ("usb: chipidea: introduce imx7d USB charger detection") Signed-off-by: Breno Lima <[email protected]> Signed-off-by: Jun Li <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Peter Chen <[email protected]>
2021-05-31Merge 5.13-rc4 into usb-nextGreg Kroah-Hartman1-0/+1
We need the usb/thunderbolt fixes in here as well. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-27usb: chipidea: udc: Fix incorrectly documented function ↵Lee Jones1-1/+1
'hw_port_is_high_speed()' Fixes the following W=1 kernel build warning(s): drivers/usb/chipidea/udc.c:247: warning: expecting prototype for hw_is_port_high_speed(). Prototype was for hw_port_is_high_speed() instead Cc: Peter Chen <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: [email protected] Acked-by: Peter Chen <[email protected]> Signed-off-by: Lee Jones <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-27usb: chipidea: otg: Fix formatting and missing documentation issuesLee Jones1-4/+5
Fixes the following W=1 kernel build warning(s): drivers/usb/chipidea/otg.c:25: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/chipidea/otg.c:78: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/usb/chipidea/otg.c:143: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst Cc: Peter Chen <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: [email protected] Acked-by: Peter Chen <[email protected]> Signed-off-by: Lee Jones <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-27usb: chipidea: core: Fix incorrectly documented function 'ci_usb_phy_exit()'Lee Jones1-1/+1
Fixes the following W=1 kernel build warning(s): drivers/usb/chipidea/core.c:343: warning: expecting prototype for _ci_usb_phy_exit(). Prototype was for ci_usb_phy_exit() instead Cc: Peter Chen <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Liam Girdwood <[email protected]> Cc: Mark Brown <[email protected]> Cc: David Lopo <[email protected]> Cc: [email protected] Acked-by: Peter Chen <[email protected]> Signed-off-by: Lee Jones <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-27USB: chipidea: remove dentry storage for debugfs fileGreg Kroah-Hartman2-22/+14
There is no need to store the dentry pointer for a debugfs file that we only use to remove it when the device goes away. debugfs can do the lookup for us instead, saving us some trouble, and making things smaller overall. Cc: Peter Chen <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-17usb: chipidea: udc: assign interrupt number to USB gadget structureLi Jun1-0/+1
Chipidea also need sync interrupt before unbind the udc while gadget remove driver, otherwise setup irq handling may happen while unbind, see below dump generated from android function switch stress test: [ 4703.503056] android_work: sent uevent USB_STATE=CONNECTED [ 4703.514642] android_work: sent uevent USB_STATE=DISCONNECTED [ 4703.651339] android_work: sent uevent USB_STATE=CONNECTED [ 4703.661806] init: Control message: Processed ctl.stop for 'adbd' from pid: 561 (system_server) [ 4703.673469] init: processing action (init.svc.adbd=stopped) from (/system/etc/init/hw/init.usb.configfs.rc:14) [ 4703.676451] Unable to handle kernel read from unreadable memory at virtual address 0000000000000090 [ 4703.676454] Mem abort info: [ 4703.676458] ESR = 0x96000004 [ 4703.676461] EC = 0x25: DABT (current EL), IL = 32 bits [ 4703.676464] SET = 0, FnV = 0 [ 4703.676466] EA = 0, S1PTW = 0 [ 4703.676468] Data abort info: [ 4703.676471] ISV = 0, ISS = 0x00000004 [ 4703.676473] CM = 0, WnR = 0 [ 4703.676478] user pgtable: 4k pages, 48-bit VAs, pgdp=000000004a867000 [ 4703.676481] [0000000000000090] pgd=0000000000000000, p4d=0000000000000000 [ 4703.676503] Internal error: Oops: 96000004 [#1] PREEMPT SMP [ 4703.758297] Modules linked in: synaptics_dsx_i2c moal(O) mlan(O) [ 4703.764327] CPU: 0 PID: 235 Comm: lmkd Tainted: G W O 5.10.9-00001-g3f5fd8487c38-dirty #63 [ 4703.773720] Hardware name: NXP i.MX8MNano EVK board (DT) [ 4703.779033] pstate: 60400085 (nZCv daIf +PAN -UAO -TCO BTYPE=--) [ 4703.785046] pc : _raw_write_unlock_bh+0xc0/0x2c8 [ 4703.789667] lr : android_setup+0x4c/0x168 [ 4703.793676] sp : ffff80001256bd80 [ 4703.796989] x29: ffff80001256bd80 x28: 00000000000000a8 [ 4703.802304] x27: ffff800012470000 x26: ffff80006d923000 [ 4703.807616] x25: ffff800012471000 x24: ffff00000b091140 [ 4703.812929] x23: ffff0000077dbd38 x22: ffff0000077da490 [ 4703.818242] x21: ffff80001256be30 x20: 0000000000000000 [ 4703.823554] x19: 0000000000000080 x18: ffff800012561048 [ 4703.828867] x17: 0000000000000000 x16: 0000000000000039 [ 4703.834180] x15: ffff8000106ad258 x14: ffff80001194c277 [ 4703.839493] x13: 0000000000003934 x12: 0000000000000000 [ 4703.844805] x11: 0000000000000000 x10: 0000000000000001 [ 4703.850117] x9 : 0000000000000000 x8 : 0000000000000090 [ 4703.855429] x7 : 6f72646e61203a70 x6 : ffff8000124f2450 [ 4703.860742] x5 : ffffffffffffffff x4 : 0000000000000009 [ 4703.866054] x3 : ffff8000108a290c x2 : ffff00007fb3a9c8 [ 4703.871367] x1 : 0000000000000000 x0 : 0000000000000090 [ 4703.876681] Call trace: [ 4703.879129] _raw_write_unlock_bh+0xc0/0x2c8 [ 4703.883397] android_setup+0x4c/0x168 [ 4703.887059] udc_irq+0x824/0xa9c [ 4703.890287] ci_irq+0x124/0x148 [ 4703.893429] __handle_irq_event_percpu+0x84/0x268 [ 4703.898131] handle_irq_event+0x64/0x14c [ 4703.902054] handle_fasteoi_irq+0x110/0x210 [ 4703.906236] __handle_domain_irq+0x8c/0xd4 [ 4703.910332] gic_handle_irq+0x6c/0x124 [ 4703.914081] el1_irq+0xdc/0x1c0 [ 4703.917221] _raw_spin_unlock_irq+0x20/0x54 [ 4703.921405] finish_task_switch+0x84/0x224 [ 4703.925502] __schedule+0x4a4/0x734 [ 4703.928990] schedule+0xa0/0xe8 [ 4703.932132] do_notify_resume+0x150/0x184 [ 4703.936140] work_pending+0xc/0x40c [ 4703.939633] Code: d5384613 521b0a69 d5184609 f9800111 (885ffd01) [ 4703.945732] ---[ end trace ba5c1875ae49d53c ]--- [ 4703.950350] Kernel panic - not syncing: Oops: Fatal exception in interrupt [ 4703.957223] SMP: stopping secondary CPUs [ 4703.961151] Kernel Offset: disabled [ 4703.964638] CPU features: 0x0240002,2000200c [ 4703.968905] Memory Limit: none [ 4703.971963] Rebooting in 5 seconds.. Tested-by: faqiang.zhu <[email protected]> Signed-off-by: Li Jun <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Peter Chen <[email protected]>
2021-03-23usb: chipidea: tegra: Silence deferred probe errorDmitry Osipenko1-5/+3
Silence deferred probe error caused by the PHY driver which is probed later than the ChipIdea driver. Signed-off-by: Dmitry Osipenko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-03-10usb: chipidea: tegra: fix flexible_array.cocci warningskernel test robot1-1/+1
Zero-length and one-element arrays are deprecated, see Documentation/process/deprecated.rst Flexible-array members should be used instead. Generated by: scripts/coccinelle/misc/flexible_array.cocci Fixes: fc53d5279094 ("usb: chipidea: tegra: Support host mode") CC: Peter Geis <[email protected]> Reported-by: kernel test robot <[email protected]> Reviewed-by: Dmitry Osipenko <[email protected]> Signed-off-by: kernel test robot <[email protected]> Signed-off-by: Julia Lawall <[email protected]> Link: https://lore.kernel.org/r/alpine.DEB.2.22.394.2102132108040.2720@hadrien Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-01-13usb: chipidea: tegra: Specify TX FIFO threshold in UDC SoC infoDmitry Osipenko1-5/+14
The UDC/OTG controller could be switched to a host mode and the TXFILLTUNING register needs to be programmed properly for the host mode. Hence specify the TX FIFO threshold in the UDC SoC info. Acked-by: Peter Chen <[email protected]> Signed-off-by: Dmitry Osipenko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-01-13usb: chipidea: tegra: Support runtime PMDmitry Osipenko1-3/+10
Tegra PHY driver now supports waking up controller from a low power mode. Enable runtime PM in order to put controller into the LPM during idle. Tested-by: Matt Merhar <[email protected]> Tested-by: Nicolas Chauvet <[email protected]> Tested-by: Peter Geis <[email protected]> Tested-by: Ion Agorria <[email protected]> Acked-by: Peter Chen <[email protected]> Signed-off-by: Dmitry Osipenko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-01-13usb: chipidea: tegra: Support host modePeter Geis4-8/+350
Add USB host mode to the Tegra HDRC driver. This allows us to benefit from support provided by the generic ChipIdea driver instead of duplicating the effort in a separate ehci-tegra driver. Tested-by: Matt Merhar <[email protected]> Tested-by: Nicolas Chauvet <[email protected]> Tested-by: Ion Agorria <[email protected]> Acked-by: Thierry Reding <[email protected]> Acked-by: Peter Chen <[email protected]> Signed-off-by: Peter Geis <[email protected]> Signed-off-by: Dmitry Osipenko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-01-13usb: chipidea: tegra: Rename UDC to USBDmitry Osipenko2-40/+40
Rename all occurrences in the code from "udc" to "usb" and change the Kconfig entry in order to show that this driver supports USB modes other than device-only mode. The follow up patch will add host-mode support and it will be cleaner to perform the renaming separately, i.e. in this patch. Tested-by: Matt Merhar <[email protected]> Tested-by: Nicolas Chauvet <[email protected]> Tested-by: Peter Geis <[email protected]> Tested-by: Ion Agorria <[email protected]> Acked-by: Thierry Reding <[email protected]> Acked-by: Peter Chen <[email protected]> Signed-off-by: Dmitry Osipenko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-01-13usb: chipidea: tegra: Remove MODULE_ALIASDmitry Osipenko1-1/+0
The OF core adds an alias based on the OF device ID table, which is enough to have the driver autoloaded. The legacy MODULE_ALIAS macro was relevant to a pre-OF board files which manually created platform devices, this is irrelevant to the modern ARM kernels since devices are created by the OF core. Remove the unnecessary macro in order to keep the driver's code cleaner. Tested-by: Matt Merhar <[email protected]> Tested-by: Nicolas Chauvet <[email protected]> Tested-by: Peter Geis <[email protected]> Tested-by: Ion Agorria <[email protected]> Acked-by: Thierry Reding <[email protected]> Acked-by: Peter Chen <[email protected]> Signed-off-by: Dmitry Osipenko <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-12-28usb: chipidea: ci_hdrc_imx: add missing put_device() call in ↵Yu Kuai1-1/+5
usbmisc_get_init_data() if of_find_device_by_node() succeed, usbmisc_get_init_data() doesn't have a corresponding put_device(). Thus add put_device() to fix the exception handling for this function implementation. Fixes: ef12da914ed6 ("usb: chipidea: imx: properly check for usbmisc") Signed-off-by: Yu Kuai <[email protected]> Cc: stable <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-12-10Merge tag 'usb-v5.11-rc1' of ↵Greg Kroah-Hartman6-15/+129
git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next Peter writes: Below are main changes for v5.11-rc1: For Chipidea USB2: - Add tracepoint support for UDC - Some tiny improvements For Cadence USB3 - Add some quirks for host mode, and let host work well at more use cases * SKIP_PHY_INIT * Disable BEI * Enable runtime PM default for i.mx platform - Some tiny improvements * tag 'usb-v5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb: MAINTAINERS: Add myself as a reviewer for CADENCE USB3 DRD IP DRIVER usb: chipidea: ci_hdrc_imx: Use of_device_get_match_data() usb: chipidea: usbmisc_imx: Use of_device_get_match_data() usb: cdns3: fix NULL pointer dereference on no platform data usb: chipidea: trace: fix the endian issue usb: chipidea: add tracepoint support for udc doc: dt-binding: cdns,usb3: add wakeup-irq usb: cdns3: imx: enable runtime pm by default usb: cdns3: add quirk for enable runtime pm by default usb: cdns3: host: disable BEI support usb: cdns3: host: add xhci_plat_priv quirk XHCI_SKIP_PHY_INIT usb: cdns3: host: add .suspend_quirk for xhci-plat.c usb: cdns3: Rids of duplicate error message usb: cdns3: Add static to cdns3_gadget_exit function
2020-12-10usb: chipidea: ci_hdrc_imx: Use of_device_get_match_data()Fabio Estevam1-6/+1
The retrieval of driver data via of_device_get_match_data() can make the code simpler. Use of_device_get_match_data() to simplify the code. Signed-off-by: Fabio Estevam <[email protected]> Signed-off-by: Peter Chen <[email protected]>
2020-12-10usb: chipidea: usbmisc_imx: Use of_device_get_match_data()Fabio Estevam1-6/+1
The retrieval of driver data via of_device_get_match_data() can make the code simpler. Use of_device_get_match_data() to simplify the code. Signed-off-by: Fabio Estevam <[email protected]> Signed-off-by: Peter Chen <[email protected]>
2020-12-10usb: chipidea: trace: fix the endian issuePeter Chen1-2/+2
"sparse warnings: (new ones prefixed by >>)" drivers/usb/chipidea/trace.c: note: in included file (through include/trace/trace_events.h, include/trace/define_trace.h, drivers/usb/chipidea/trace.h): >> drivers/usb/chipidea/./trace.h:39:1: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] next @@ got restricted __le32 [usertype] next @@ >> drivers/usb/chipidea/./trace.h:39:1: sparse: expected unsigned int [usertype] next >> drivers/usb/chipidea/./trace.h:39:1: sparse: got restricted __le32 [usertype] next >> drivers/usb/chipidea/./trace.h:39:1: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] token @@ got restricted __le32 [usertype] token @@ >> drivers/usb/chipidea/./trace.h:39:1: sparse: expected unsigned int [usertype] token >> drivers/usb/chipidea/./trace.h:39:1: sparse: got restricted __le32 [usertype] token drivers/usb/chipidea/trace.c: note: in included file (through include/trace/perf.h, include/trace/define_trace.h, drivers/usb/chipidea/trace.h): >> drivers/usb/chipidea/./trace.h:39:1: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] next @@ got restricted __le32 [usertype] next @@ >> drivers/usb/chipidea/./trace.h:39:1: sparse: expected unsigned int [usertype] next >> drivers/usb/chipidea/./trace.h:39:1: sparse: got restricted __le32 [usertype] next >> drivers/usb/chipidea/./trace.h:39:1: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] token @@ got restricted __le32 [usertype] token @@ >> drivers/usb/chipidea/./trace.h:39:1: sparse: expected unsigned int [usertype] token >> drivers/usb/chipidea/./trace.h:39:1: sparse: got restricted __le32 [usertype] token Reported-by: kernel test robot <[email protected]> Signed-off-by: Peter Chen <[email protected]>
2020-12-10usb: chipidea: add tracepoint support for udcPeter Chen4-3/+127
Add basic tracepoint support for udc driver. Reviewed-by: Jun Li <[email protected]> Signed-off-by: Peter Chen <[email protected]>
2020-12-07usb: chipidea: ci_hdrc_imx: Pass DISABLE_DEVICE_STREAMING flag to imx6ulFabio Estevam1-1/+2
According to the i.MX6UL Errata document: https://www.nxp.com/docs/en/errata/IMX6ULCE.pdf ERR007881 also affects i.MX6UL, so pass the CI_HDRC_DISABLE_DEVICE_STREAMING flag to workaround the issue. Fixes: 52fe568e5d71 ("usb: chipidea: imx: add imx6ul usb support") Cc: <[email protected]> Signed-off-by: Fabio Estevam <[email protected]> Signed-off-by: Peter Chen <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-09-03usb: chipidea: ci_hdrc_imx: restore pinctrlPeter Chen1-1/+7
The pinctrl setting may lost during the system suspend (eg, imx7ulp), it needs to restore them after system resume. Meanwhile, some platforms may need to set special pinctrl for power comsumption. Signed-off-by: Peter Chen <[email protected]>
2020-08-23usb: chipidea: imx: add two samsung picophy parameters tuning implementationPeter Chen3-0/+28
These two parameters are used to improve USB signal for board level, in this commit, we read it from the dtb, and write to related register during the initialization. Signed-off-by: Peter Chen <[email protected]>
2020-07-29Merge tag 'usb-ci-v5.9-rc1' of ↵Greg Kroah-Hartman5-4/+37
git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next Peter writes: ENDIAN issue fix and one query controller role API is introduced. * tag 'usb-ci-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb: usb: chipidea: imx: get available runtime dr mode for wakeup setting usb: chipidea: add query_available_role interface Documentation: ABI: usb: chipidea: Update Li Jun's e-mail usb: chipidea: udc: fix the ENDIAN issue
2020-07-28usb: chipidea: imx: get available runtime dr mode for wakeup settingPeter Chen3-2/+7
If runtime dr_mode is not dual-role, it doesn't need to enable ID wakeup interrupt. If runtime dr_mode is host, it doesn't need to enable VBUS wakeup interrupt. With these changes, the user will not get the unexpected wakeup for single role use case. For example, the host-only use case at Micro-AB port, the controller should not be waken up by only plug in Micro-AB cable or the Micro-B cable with host. Signed-off-by: Peter Chen <[email protected]>
2020-07-28usb: chipidea: add query_available_role interfacePeter Chen1-0/+27
The glue layer may need to know current available role to do some setting, eg, the wakeup setting. So we add ci_hdrc_query_available_role for that. Signed-off-by: Peter Chen <[email protected]>
2020-07-20Merge 5.8-rc6 into usb-nextGreg Kroah-Hartman1-0/+24
We need the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-07-09usb: chipidea: ci_hdrc_pci: Fix improper use of kerneldoc formatLee Jones1-1/+1
No attempt has been made to document any of the structure's properties here. Fixes the following W=1 kernel build warning(s): drivers/usb/chipidea/ci_hdrc_pci.c:132: warning: cannot understand function prototype: 'const struct pci_device_id ci_hdrc_pci_id_table[] = ' Cc: Peter Chen <[email protected]> Cc: David Lopo <[email protected]> Signed-off-by: Lee Jones <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-07-09usb: chipidea: usbmisc_imx: Demote obvious misuse of kerneldoc to standard ↵Lee Jones1-1/+1
comment block No attempt has been made to document the demoted function here. Fixes the following W=1 kernel build warning(s): drivers/usb/chipidea/usbmisc_imx.c:801: warning: Function parameter or member 'data' not described in 'imx7d_charger_detection' Cc: Peter Chen <[email protected]> Cc: Shawn Guo <[email protected]> Cc: Sascha Hauer <[email protected]> Cc: Pengutronix Kernel Team <[email protected]> Cc: Fabio Estevam <[email protected]> Cc: NXP Linux Team <[email protected]> Cc: Richard Zhao <[email protected]> Signed-off-by: Lee Jones <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-07-09usb: chipidea: udc: Fix a few kerneldoc issuesLee Jones1-2/+6
Descriptions were missing for 'ci' almost throughout. There was one instance of over-documenting. Finally one function argument was incorrectly documented (probably down to bitrot). Fixes the following W=1 kernel build warning(s): drivers/usb/chipidea/udc.c:245: warning: Function parameter or member 'ci' not described in 'hw_port_is_high_speed' drivers/usb/chipidea/udc.c:271: warning: Function parameter or member 'ci' not described in 'hw_test_and_clear_intr_active' drivers/usb/chipidea/udc.c:285: warning: Function parameter or member 'ci' not described in 'hw_test_and_clear_setup_guard' drivers/usb/chipidea/udc.c:296: warning: Function parameter or member 'ci' not described in 'hw_test_and_set_setup_guard' drivers/usb/chipidea/udc.c:321: warning: Function parameter or member 'ci' not described in 'hw_usb_reset' drivers/usb/chipidea/udc.c:628: warning: Excess function parameter 'ci' description in 'free_pending_td' drivers/usb/chipidea/udc.c:655: warning: Function parameter or member 'hwep' not described in '_hardware_dequeue' drivers/usb/chipidea/udc.c:655: warning: Excess function parameter 'gadget' description in '_hardware_dequeue' Cc: Peter Chen <[email protected]> Signed-off-by: Lee Jones <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-07-09usb: chipidea: udc: Help out kerneldoc headers that have tried, demote the ↵Lee Jones1-17/+17
others Help with adding the odd description where they have been omitted or where the format isn't quite right. Demote all function headers which are lacking any attempt of describing their arguments. Fixes the following W=1 kernel build warning(s): drivers/usb/chipidea/udc.c:645: warning: Function parameter or member 'hwreq' not described in '_hardware_dequeue' drivers/usb/chipidea/udc.c:645: warning: Excess function parameter 'gadget' description in '_hardware_dequeue' drivers/usb/chipidea/udc.c:1326: warning: Function parameter or member 'ep' not described in 'ep_enable' drivers/usb/chipidea/udc.c:1326: warning: Function parameter or member 'desc' not described in 'ep_enable' drivers/usb/chipidea/udc.c:1393: warning: Function parameter or member 'ep' not described in 'ep_disable' drivers/usb/chipidea/udc.c:1433: warning: Function parameter or member 'ep' not described in 'ep_alloc_request' drivers/usb/chipidea/udc.c:1433: warning: Function parameter or member 'gfp_flags' not described in 'ep_alloc_request' drivers/usb/chipidea/udc.c:1454: warning: Function parameter or member 'ep' not described in 'ep_free_request' drivers/usb/chipidea/udc.c:1454: warning: Function parameter or member 'req' not described in 'ep_free_request' drivers/usb/chipidea/udc.c:1488: warning: Function parameter or member 'ep' not described in 'ep_queue' drivers/usb/chipidea/udc.c:1488: warning: Function parameter or member 'req' not described in 'ep_queue' drivers/usb/chipidea/udc.c:1488: warning: Function parameter or member 'gfp_flags' not described in 'ep_queue' drivers/usb/chipidea/udc.c:1512: warning: Function parameter or member 'ep' not described in 'ep_dequeue' drivers/usb/chipidea/udc.c:1512: warning: Function parameter or member 'req' not described in 'ep_dequeue' drivers/usb/chipidea/udc.c:1556: warning: Function parameter or member 'ep' not described in 'ep_set_halt' drivers/usb/chipidea/udc.c:1556: warning: Function parameter or member 'value' not described in 'ep_set_halt' drivers/usb/chipidea/udc.c:1566: warning: Function parameter or member 'ep' not described in 'ep_set_wedge' drivers/usb/chipidea/udc.c:1586: warning: Function parameter or member 'ep' not described in 'ep_fifo_flush' drivers/usb/chipidea/udc.c:1610: warning: cannot understand function prototype: 'const struct usb_ep_ops usb_ep_ops = ' drivers/usb/chipidea/udc.c:1629: warning: Function parameter or member '_gadget' not described in 'ci_hdrc_gadget_connect' drivers/usb/chipidea/udc.c:1629: warning: Function parameter or member 'is_active' not described in 'ci_hdrc_gadget_connect' drivers/usb/chipidea/udc.c:1780: warning: cannot understand function prototype: 'const struct usb_gadget_ops usb_gadget_ops = ' drivers/usb/chipidea/udc.c:1931: warning: Function parameter or member 'gadget' not described in 'ci_udc_stop' drivers/usb/chipidea/udc.c:1965: warning: Function parameter or member 'ci' not described in 'udc_irq' drivers/usb/chipidea/udc.c:2095: warning: Function parameter or member 'ci' not described in 'ci_hdrc_gadget_destroy' drivers/usb/chipidea/udc.c:2144: warning: Function parameter or member 'ci' not described in 'ci_hdrc_gadget_init' Cc: Peter Chen <[email protected]> Signed-off-by: Lee Jones <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-07-09usb: chipidea: udc: Add missing descriptions for function arg 'ci'Lee Jones1-1/+11
Looks like a very popular argument to omit descriptions for. Fixes the following W=1 kernel build warning(s): drivers/usb/chipidea/udc.c:80: warning: Function parameter or member 'ci' not described in 'hw_device_state' drivers/usb/chipidea/udc.c:100: warning: Function parameter or member 'ci' not described in 'hw_ep_flush' drivers/usb/chipidea/udc.c:121: warning: Function parameter or member 'ci' not described in 'hw_ep_disable' drivers/usb/chipidea/udc.c:136: warning: Function parameter or member 'ci' not described in 'hw_ep_enable' drivers/usb/chipidea/udc.c:170: warning: Function parameter or member 'ci' not described in 'hw_ep_get_halt' drivers/usb/chipidea/udc.c:185: warning: Function parameter or member 'ci' not described in 'hw_ep_prime' drivers/usb/chipidea/udc.c:215: warning: Function parameter or member 'ci' not described in 'hw_ep_set_halt' drivers/usb/chipidea/udc.c:238: warning: Function parameter or member 'ci' not described in 'hw_port_is_high_speed' drivers/usb/chipidea/udc.c:251: warning: Function parameter or member 'ci' not described in 'hw_test_and_clear_complete' drivers/usb/chipidea/udc.c:263: warning: Function parameter or member 'ci' not described in 'hw_test_and_clear_intr_active' drivers/usb/chipidea/udc.c:277: warning: Function parameter or member 'ci' not described in 'hw_test_and_clear_setup_guard' drivers/usb/chipidea/udc.c:288: warning: Function parameter or member 'ci' not described in 'hw_test_and_set_setup_guard' drivers/usb/chipidea/udc.c:300: warning: Function parameter or member 'ci' not described in 'hw_usb_set_address' drivers/usb/chipidea/udc.c:312: warning: Function parameter or member 'ci' not described in 'hw_usb_reset' Cc: Peter Chen <[email protected]> Signed-off-by: Lee Jones <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-07-09usb: chipidea: debug: Demote obvious misuse of kerneldoc to standard comment ↵Lee Jones1-5/+5
blocks No attempt has been made to document any of the demoted functions here. Fixes the following W=1 kernel build warning(s): drivers/usb/chipidea/debug.c:25: warning: Function parameter or member 's' not described in 'ci_device_show' drivers/usb/chipidea/debug.c:25: warning: Function parameter or member 'data' not described in 'ci_device_show' drivers/usb/chipidea/debug.c:54: warning: Function parameter or member 's' not described in 'ci_port_test_show' drivers/usb/chipidea/debug.c:54: warning: Function parameter or member 'data' not described in 'ci_port_test_show' drivers/usb/chipidea/debug.c:75: warning: Function parameter or member 'file' not described in 'ci_port_test_write' drivers/usb/chipidea/debug.c:75: warning: Function parameter or member 'ubuf' not described in 'ci_port_test_write' drivers/usb/chipidea/debug.c:75: warning: Function parameter or member 'count' not described in 'ci_port_test_write' drivers/usb/chipidea/debug.c:75: warning: Function parameter or member 'ppos' not described in 'ci_port_test_write' drivers/usb/chipidea/debug.c:122: warning: Function parameter or member 's' not described in 'ci_qheads_show' drivers/usb/chipidea/debug.c:122: warning: Function parameter or member 'data' not described in 'ci_qheads_show' drivers/usb/chipidea/debug.c:154: warning: Function parameter or member 's' not described in 'ci_requests_show' drivers/usb/chipidea/debug.c:154: warning: Function parameter or member 'data' not described in 'ci_requests_show' Cc: Peter Chen <[email protected]> Signed-off-by: Lee Jones <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-07-09usb: chipidea: otg: Fix kerneldoc issues relating to description of 'ci'Lee Jones1-2/+4
Firstly we add some missing descriptions. Then we fix some formatting issues. Kerneldoc expects arguments to be in the format '@.*: '. If either the '@' or ':' is omitted, kerneldoc gets confused. Fixes the following W=1 kernel build warning(s): drivers/usb/chipidea/otg.c:29: warning: Function parameter or member 'ci' not described in 'hw_read_otgsc' drivers/usb/chipidea/otg.c:82: warning: Function parameter or member 'ci' not described in 'hw_write_otgsc' drivers/usb/chipidea/otg.c:235: warning: Function parameter or member 'ci' not described in 'ci_hdrc_otg_init' drivers/usb/chipidea/otg.c:254: warning: Function parameter or member 'ci' not described in 'ci_hdrc_otg_destroy' Cc: Peter Chen <[email protected]> Signed-off-by: Lee Jones <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-07-09usb: chipidea: core: Document hw_port_test_set()'s missing 'ci' argumentLee Jones1-0/+1
Fixes the following W=1 kernel build warning(s): drivers/usb/chipidea/core.c:163: warning: Function parameter or member 'ci' not described in 'hw_port_test_set' Cc: Peter Chen <[email protected]> Cc: David Lopo <[email protected]> Signed-off-by: Lee Jones <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-07-07usb: chipidea: core: add wakeup support for extconPeter Chen1-0/+24
If wakeup event occurred by extcon event, it needs to call ci_irq again since the first ci_irq calling at extcon notifier only wakes up controller, but do noop for event handling, it causes the extcon use case can't work well from low power mode. Cc: <[email protected]> Fixes: 3ecb3e09b042 ("usb: chipidea: Use extcon framework for VBUS and ID detect") Reported-by: Philippe Schenker <[email protected]> Tested-by: Philippe Schenker <[email protected]> Signed-off-by: Peter Chen <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-06-24USB: ch9: add "USB_" prefix in front of TEST definesGreg Kroah-Hartman1-5/+5
For some reason, the TEST_ defines in the usb/ch9.h files did not have the USB_ prefix on it, making it a bit confusing when reading the file, as well as not the nicest thing to do in a uapi file. So fix that up and add the USB_ prefix on to them, and fix up all in-kernel usages. This included deleting the duplicate copy in the net2272.h file. Cc: Felipe Balbi <[email protected]> Cc: Michal Simek <[email protected]> Cc: Mathias Nyman <[email protected]> Cc: Pawel Laszczak <[email protected]> Cc: YueHaibing <[email protected]> Cc: Nathan Chancellor <[email protected]> Cc: Jason Yan <[email protected]> Cc: Jia-Ju Bai <[email protected]> Cc: Stephen Boyd <[email protected]> Cc: Christophe JAILLET <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: Jules Irenge <[email protected]> Cc: Alan Stern <[email protected]> Cc: Thinh Nguyen <[email protected]> Cc: Rob Gill <[email protected]> Cc: Macpaul Lin <[email protected]> Acked-by: Minas Harutyunyan <[email protected]> Acked-by: Bin Liu <[email protected]> Acked-by: Chunfeng Yun <[email protected]> Acked-by: Peter Chen <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
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