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path: root/drivers/usb
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2021-04-13USB: serial: ti_usb_3410_5052: reduce drain delay to one charJohan Hovold
The three-character drain delay was added by commit f1175daa5312 ("USB: ti_usb_3410_5052: kill custom closing_wait") when removing the custom closing-wait implementation, which used a fixed 20 ms poll period and drain delay. This was likely a bit too conservative as a one-character timeout (e.g. 33 ms at 300 bps) should be enough to compensate for the lack of a transmitter empty bit in the TUSB5052 line-status register. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2021-04-13USB: serial: io_ti: document reason for drain delayJohan Hovold
Document that the device line-status register doesn't tell when the transmitter shift register has emptied and that this is why the one-character drain delay is needed. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2021-04-13USB: serial: f81232: drop time-based drain delayJohan Hovold
The f81232 driver now waits for the transmit FIFO to drain during close so there is no need to keep the time-based drain delay, which would add up to two seconds on every close for low line speeds. Fixes: 98405f81036d ("USB: serial: f81232: add tx_empty function") Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2021-04-13usb: dwc2: Add exit clock gating before removing driverArtur Petrosyan
When dwc2 core is in clock gating mode loading driver again causes driver fail. Because in that mode registers are not accessible. Added a flow of exiting clock gating mode to avoid the driver reload failure. Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com> Link: https://lore.kernel.org/r/20210413073731.3C81BA022E@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-13usb: dwc2: Add clock gating exiting flow by system resumeArtur Petrosyan
If not hibernation nor partial power down are supported, port resume is done using the clock gating programming flow. Adds a new flow of exiting clock gating when PC is resumed. Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com> Link: https://lore.kernel.org/r/20210413073723.BA0FEA022E@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-13usb: dwc2: Add clock gating entering flow by system suspendArtur Petrosyan
If not hibernation nor partial power down are supported, clock gating is used to save power. Adds a new flow of entering clock gating when PC is suspended. Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com> Link: https://lore.kernel.org/r/20210413073716.30C13A0094@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-13usb: dwc2: Allow exit clock gating in urb enqueueArtur Petrosyan
When core is in clock gating state and an external hub is connected, upper layer sends URB enqueue request, which results in port reset issue. Added exit from clock gating state to avoid port reset issue and process upper layer request properly. Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com> Link: https://lore.kernel.org/r/20210413073708.ADFC6A0094@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-13usb: dwc2: Update exit clock gating when port is resumedArtur Petrosyan
Updates the implementation of exiting clock gating mode when core receives port resume. Instead of setting the required bit fields of the registers inline, called the "dwc2_host_exit_clock_gating()" function. Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com> Link: https://lore.kernel.org/r/20210413073701.367E0A022E@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-13usb: dwc2: Update enter clock gating when port is suspendedArtur Petrosyan
Updates the implementation of entering clock gating mode when core receives port suspend. Instead of setting the required bit fields of the registers inline, called the "dwc2_host_enter_clock_gating()" function. Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com> Link: https://lore.kernel.org/r/20210413073653.9F493A0094@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-13usb: dwc2: Add exit clock gating when port reset is assertedArtur Petrosyan
Adds clock gating exit flow when set port feature reset is received in suspended state. Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com> Link: https://lore.kernel.org/r/20210413073646.27217A0094@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-13usb: dwc2: Add exit clock gating from session request interruptArtur Petrosyan
Added clock gating exit flow from session request interrupt handler according programming guide. Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com> Link: https://lore.kernel.org/r/20210413073638.921E8A0099@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-13usb: dwc2: Add exit clock gating from wakeup interruptArtur Petrosyan
Added exit from clock gating mode when wakeup interrupt is detected. To exit from the clock gating in device mode "dwc2_gadget_exit_clock_gating()" function is used with rem_wakeup parameter 0. To exit clock gating in host mode "dwc2_host_exit_clock_gating()" with rem_wakeup parameter 1. Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com> Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com> Link: https://lore.kernel.org/r/20210413073630.EF2CEA0094@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-13usb: dwc2: Allow entering clock gating from USB_SUSPEND interruptArtur Petrosyan
If core doesn't support hibernation or partial power down power saving options, power can still be saved using clock gating on all the clocks. - Added entering clock gating state from USB_SUSPEND interrupt. Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com> Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com> Link: https://lore.kernel.org/r/20210413073623.65355A022E@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-13usb: dwc2: Add host clock gating support functionsArtur Petrosyan
Added host clock gating support functions according programming guide. Added function names: dwc2_host_enter_clock_gating() dwc2_host_exit_clock_gating() Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com> Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com> Link: https://lore.kernel.org/r/20210413073615.B3E84A022E@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-13usb: dwc2: Add device clock gating support functionsArtur Petrosyan
Added device clock gating support functions according programming guide. Moved "bus_suspended" flag to "dwc2_hsotg" struct because we need to set that flag while entering to clock gating in case when the driver is built in peripheral mode. Added function names: dwc2_gadget_enter_clock_gating() dwc2_gadget_exit_clock_gating() Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com> Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com> Link: https://lore.kernel.org/r/20210413073607.F41E8A0094@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-12Merge tag 'usb-v5.13-rc1' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-next Peter writes: Several Cadence3 improvements are introduced in v5.13-rc1: - Add recovery during resume if the controller was lost power at system suspend - Reduce DMA memory footprint - Other small improvements * tag 'usb-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb: usb: cdnsp: Fixes issue with Configure Endpoint command usb: cdnsp: remove redundant initialization of variable ret usb: cdns3: delete repeated clear operations usb: cdns3: Optimize DMA request buffer allocation usb: cdns3: Use dma_pool_* api to alloc trb pool usb: cdns3: fix static checker warning. usb: cdns3: imx: mark cdns_imx_system_resume as __maybe_unused usb: cdns3: trace: delete the trace parameter for request->trb usb: cdns3: imx: add power lost support for system resume usb: cdns3: add power lost support for system resume
2021-04-12Revert "usb: Link the ports to the connectors they are attached to"Greg Kroah-Hartman
This reverts commit 63cd78617350dae99cc5fbd8f643b83ee819fe33 as it causes a build error: depmod: ERROR: Cycle detected: usbcore -> typec -> usbcore depmod: ERROR: Found 2 modules in dependency cycles! Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Link: https://lore.kernel.org/r/20210412213655.3776e15e@canb.auug.org.au Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-12usb: cdnsp: Fixes issue with Configure Endpoint commandPawel Laszczak
Patch adds flag EP_UNCONFIGURED to detect whether endpoint was unconfigured. This flag is set in cdnsp_reset_device after Reset Device command. Among others this command disables all non control endpoints. Flag is used in cdnsp_gadget_ep_disable to protect controller against invoking Configure Endpoint command on disabled endpoint. Lack of this protection in some cases caused that Configure Endpoint command completed with Context State Error code completion. Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdnsp: remove redundant initialization of variable retColin Ian King
The variable ret is being initialized with a value that is never read and it is being updated later with a new value. The initialization is redundant and can be removed. Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdns3: delete repeated clear operationsWang Qing
dma_alloc_coherent already zeroes out memory, so memset is not needed. Signed-off-by: Wang Qing <wangqing@vivo.com> Reviewed-by: Pawel Laszczak <pawell@cadence.com> Acked-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdns3: Optimize DMA request buffer allocationSanket Parmar
dma_alloc_coherent() might fail on the platform with a small DMA region. To avoid such failure in cdns3_prepare_aligned_request_buf(), dma_alloc_coherent() is replaced with dma_alloc_noncoherent() to allocate aligned request buffer of dynamic length. Reported-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Sanket Parmar <sparmar@cadence.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdns3: Use dma_pool_* api to alloc trb poolSanket Parmar
Allocation of DMA coherent memory in atomic context using dma_alloc_coherent() might fail on platforms with smaller DMA region. To fix it, dma_alloc_coherent() is replaced with dma_pool API to allocate a smaller chunk of DMA coherent memory for TRB rings. Reported-by: Aswath Govindraju <a-govindraju@ti.com> Signed-off-by: Sanket Parmar <sparmar@cadence.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdns3: fix static checker warning.Frank Li
The patch c450e48eb570: "usb: cdns3: add power lost support for system resume" from Feb 18, 2021, leads to the following static checker warning: drivers/usb/cdns3/core.c:551 cdns_resume() error: uninitialized symbol 'ret'. drivers/usb/cdns3/core.c 544 545 if (!role_changed) { 546 if (cdns->role == USB_ROLE_HOST) 547 ret = cdns_drd_host_on(cdns); 548 else if (cdns->role == USB_ROLE_DEVICE) 549 ret = cdns_drd_gadget_on(cdns); "ret" is uninitialized at else branch. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Frank Li <frank.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdns3: imx: mark cdns_imx_system_resume as __maybe_unusedWei Yongjun
The function cdns_imx_system_resume() may have no callers depending on configuration, so it must be marked __maybe_unused to avoid harmless warning: drivers/usb/cdns3/cdns3-imx.c:378:12: warning: 'cdns_imx_system_resume' defined but not used [-Wunused-function] 378 | static int cdns_imx_system_resume(struct device *dev) | ^~~~~~~~~~~~~~~~~~~~~~ Fixes: 67982dfa59de ("usb: cdns3: imx: add power lost support for system resume") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdns3: trace: delete the trace parameter for request->trbPeter Chen
It is not correct using %pa to print virtual address of request->trb, and it is hard to print its physical address due to the virtual address is zero before using. It could use index (start_trb/end_trb) to know the current trb position, so no matter virtual address or physical address for request-trb is not so meaningful. Reported-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdns3: imx: add power lost support for system resumeFrank Li
imx need special handle when controller lost power Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Frank Li <frank.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12usb: cdns3: add power lost support for system resumeFrank Li
If the controller lost its power during the system suspend, we need to do all initialiation operations. Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Frank Li <frank.li@nxp.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-04-12USB: serial: cp210x: add gpio-configuration debug printkJohan Hovold
Add a debug printk to dump the GPIO configuration stored in EEPROM during probe. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Johan Hovold <johan@kernel.org>
2021-04-12USB: serial: cp210x: provide gpio valid maskJohan Hovold
Use the new GPIO valid-mask feature to inform gpiolib which pins are available for use instead of handling that in a request callback. This also allows user space to figure out which pins are available through the chardev interface without having to request each pin in turn. Note that the return value when requesting an unavailable pin will now be -EINVAL instead of -ENODEV. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Johan Hovold <johan@kernel.org>
2021-04-12usbip: vudc: fix missing unlock on error in usbip_sockfd_store()Ye Bin
Add the missing unlock before return from function usbip_sockfd_store() in the error handling case. Fixes: bd8b82042269 ("usbip: vudc synchronize sysfs code paths") Reported-by: Hulk Robot <hulkci@huawei.com> Acked-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Ye Bin <yebin10@huawei.com> Link: https://lore.kernel.org/r/20210408112305.1022247-1-yebin10@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-12Merge 5.12-rc7 into usb-nextGreg Kroah-Hartman
We need the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10usb: dwc3: qcom: Detect DWC3 DT-nodes using compatible stringSerge Semin
In accordance with the USB HCD/DRD schema all the USB controllers are supposed to have DT-nodes named with prefix "^usb(@.*)?". Since the existing DT-nodes will be renamed in a subsequent patch let's fix the DWC3 Qcom-specific code to detect the DWC3 sub-node just by checking its compatible string to match the "snps,dwc3". The semantic of the code won't change seeing all the DWC USB3 nodes are supposed to have the compatible property with any of those strings set. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20210409113029.7144-7-Sergey.Semin@baikalelectronics.ru Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10usb: dwc3: qcom: Remove redundant dev_err call in dwc3_qcom_probe()Bixuan Cui
There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Bixuan Cui <cuibixuan@huawei.com> Link: https://lore.kernel.org/r/20210410024818.65659-1-cuibixuan@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10usb: core: reduce power-on-good delay time of root hubChunfeng Yun
Return the exactly delay time given by root hub descriptor, this helps to reduce resume time etc. Due to the root hub descriptor is usually provided by the host controller driver, if there is compatibility for a root hub, we can fix it easily without affect other root hub Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1618017645-12259-1-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-10USB:ehci:fix Kunpeng920 ehci hardware problemLongfang Liu
Kunpeng920's EHCI controller does not have SBRN register. Reading the SBRN register when the controller driver is initialized will get 0. When rebooting the EHCI driver, ehci_shutdown() will be called. if the sbrn flag is 0, ehci_shutdown() will return directly. The sbrn flag being 0 will cause the EHCI interrupt signal to not be turned off after reboot. this interrupt that is not closed will cause an exception to the device sharing the interrupt. Therefore, the EHCI controller of Kunpeng920 needs to skip the read operation of the SBRN register. Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Longfang Liu <liulongfang@huawei.com> Link: https://lore.kernel.org/r/1617958081-17999-1-git-send-email-liulongfang@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09USB: serial: do not use tty class device for debuggingJohan Hovold
Use the port struct device rather than tty class device for debugging. Note that while USB serial doesn't support serdev yet (due to serdev not handling hotplugging), serdev ttys do not have a corresponding class device and would have been logged using a "(NULL device *):" prefix. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2021-04-09USB: cdc-acm: fix TIOCGSERIAL implementationJohan Hovold
TIOCSSERIAL is a horrid, underspecified, legacy interface which for most serial devices is only useful for setting the close_delay and closing_wait parameters. The xmit_fifo_size parameter could be used to set the hardware transmit fifo size of a legacy UART when it could not be detected, but the interface is limited to eight bits and should be left unset when it is not used. Similarly, baud_base could be used to set the UART base clock when it could not be detected, but might as well be left unset when it is not known (which is the case for CDC). Fix the cdc-acm TIOCGSERIAL implementation by dropping its custom interpretation of the unused xmit_fifo_size and baud_base fields, which overflowed the former with the URB buffer size and set the latter to the current line speed. Also return the port line number, which is the only other value used besides the close parameters. Note that the current line speed can still be retrieved through the standard termios interfaces. Fixes: 18c75720e667 ("USB: allow users to run setserial with cdc-acm") Acked-by: Oliver Neukum <oneukum@suse.com> Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20210408131602.27956-4-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09USB: cdc-acm: fix unprivileged TIOCCSERIALJohan Hovold
TIOCSSERIAL is a horrid, underspecified, legacy interface which for most serial devices is only useful for setting the close_delay and closing_wait parameters. A non-privileged user has only ever been able to set the since long deprecated ASYNC_SPD flags and trying to change any other *supported* feature should result in -EPERM being returned. Setting the current values for any supported features should return success. Fix the cdc-acm implementation which instead indicated that the TIOCSSERIAL ioctl was not even implemented when a non-privileged user set the current values. Fixes: ba2d8ce9db0a ("cdc-acm: implement TIOCSSERIAL to avoid blocking close(2)") Acked-by: Oliver Neukum <oneukum@suse.com> Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20210408131602.27956-3-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09Revert "USB: cdc-acm: fix rounding error in TIOCSSERIAL"Johan Hovold
This reverts commit b401f8c4f492cbf74f3f59c9141e5be3071071bb. The offending commit claimed that trying to set the values reported back by TIOCGSERIAL as a regular user could result in an -EPERM error when HZ is 250, but that was never the case. With HZ=250, the default 0.5 second value of close_delay is converted to 125 jiffies when set and is converted back to 50 centiseconds by TIOCGSERIAL as expected (not 12 cs as was claimed, even if that was the case before an earlier fix). Comparing the internal current and new jiffies values is just fine to determine if the value is about to change so drop the bogus workaround (which was also backported to stable). For completeness: With different default values for these parameters or with a HZ value not divisible by two, the lack of rounding when setting the default values in tty_port_init() could result in an -EPERM being returned, but this is hardly something we need to worry about. Cc: Anthony Mallet <anthony.mallet@laas.fr> Cc: stable@vger.kernel.org Acked-by: Oliver Neukum <oneukum@suse.com> Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20210408131602.27956-2-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09usb: typec: tcpm: Add support for altmodesHans de Goede
Add support for altmodes described in the usb-connector fwnode associated with the Type-C controller by calling the new typec_port_register_altmodes_from_fwnode() helper for this. Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20210409134033.105834-3-hdegoede@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09usb: typec: Add typec_port_register_altmodes()Hans de Goede
This can be used by Type-C controller drivers which use a standard usb-connector fwnode, with altmodes sub-node, to describe the available altmodes. Note there are is no devicetree bindings documentation for the altmodes node, this is deliberate. ATM the fwnodes used to register the altmodes are only used internally to pass platform info from a drivers/platform/x86 driver to the type-c subsystem. When a devicetree user of this functionally comes up and the dt-bindings have been hashed out the internal use can be adjusted to match the dt-bindings. Currently the typec_port_register_altmodes() function expects an "altmodes" child fwnode on port->dev with this "altmodes" fwnode having child fwnodes itself with each child containing 2 integer properties: 1. A "svid" property, which sets the id of the altmode, e.g. displayport altmode has a svid of 0xff01. 2. A "vdo" property, typically used as a bitmask describing the capabilities of the altmode, the bits in the vdo are specified in the specification of the altmode. Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20210409134033.105834-2-hdegoede@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09usb: roles: Call try_module_get() from usb_role_switch_find_by_fwnode()Hans de Goede
usb_role_switch_find_by_fwnode() returns a reference to the role-switch which must be put by calling usb_role_switch_put(). usb_role_switch_put() calls module_put(sw->dev.parent->driver->owner), add a matching try_module_get() to usb_role_switch_find_by_fwnode(), making it behave the same as the other usb_role_switch functions which return a reference. This avoids a WARN_ON being hit at kernel/module.c:1158 due to the module-refcount going below 0. Fixes: c6919d5e0cd1 ("usb: roles: Add usb_role_switch_find_by_fwnode()") Cc: stable <stable@vger.kernel.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20210409124136.65591-1-hdegoede@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09usb: dwc3: xilinx: Remove the extra freeing of clocksManish Narani
The clocks are configured by devm_clk_bulk_get_all() in this driver. In case of any error the clocks freeing will be handled automatically. There is no need to explicitly free the clocks. Fix the same. Fixes: 84770f028fab ("usb: dwc3: Add driver for Xilinx platforms") Signed-off-by: Manish Narani <manish.narani@xilinx.com> Link: https://lore.kernel.org/r/1617904448-74611-3-git-send-email-manish.narani@xilinx.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09usb: dwc3: Resolve kernel-doc warning for Xilinx DWC3 driverManish Narani
The kernel-doc run gave a warning for Xilinx DWC3 driver: drivers/usb/dwc3/dwc3-xilinx.c:27: warning: expecting prototype for dwc3(). Prototype was for XLNX_USB_PHY_RST_EN() instead Basically it was due to an extra '*' in line:2. This patch fixes the same. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Manish Narani <manish.narani@xilinx.com> Link: https://lore.kernel.org/r/1617904448-74611-2-git-send-email-manish.narani@xilinx.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09usb: core: hub: Fix PM reference leak in usb_port_resume()Bixuan Cui
pm_runtime_get_sync will increment pm usage counter even it failed. thus a pairing decrement is needed. Fix it by replacing it with pm_runtime_resume_and_get to keep usage counter balanced. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Bixuan Cui <cuibixuan@huawei.com> Link: https://lore.kernel.org/r/20210408130831.56239-1-cuibixuan@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09usb: musb: fix PM reference leak in musb_irq_work()Bixuan Cui
pm_runtime_get_sync will increment pm usage counter even it failed. thus a pairing decrement is needed. Fix it by replacing it with pm_runtime_resume_and_get to keep usage counter balanced. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Bixuan Cui <cuibixuan@huawei.com> Link: https://lore.kernel.org/r/20210408091836.55227-1-cuibixuan@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09usb: gadget: tegra-xudc: Fix possible use-after-free in tegra_xudc_remove()Yang Yingliang
This driver's remove path calls cancel_delayed_work(). However, that function does not wait until the work function finishes. This means that the callback function may still be running after the driver's remove function has finished, which would result in a use-after-free. Fix by calling cancel_delayed_work_sync(), which ensures that the work is properly cancelled, no longer running, and unable to re-schedule itself. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Link: https://lore.kernel.org/r/20210407092947.3271507-1-yangyingliang@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09usb: host: u132-hcd: use DEFINE_MUTEX() for mutex lockZheng Yongjun
mutex lock can be initialized automatically with DEFINE_MUTEX() rather than explicitly calling mutex_init(). Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Link: https://lore.kernel.org/r/20210405101434.14878-1-zhengyongjun3@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09usb: gadget: r8a66597: Add missing null check on return from ↵Colin Ian King
platform_get_resource The call to platform_get_resource can potentially return a NULL pointer on failure, so add this check and return -EINVAL if it fails. Fixes: c41442474a26 ("usb: gadget: R8A66597 peripheral controller support.") Signed-off-by: Colin Ian King <colin.king@canonical.com> Addresses-Coverity: ("Dereference null return") Link: https://lore.kernel.org/r/20210406184510.433497-1-colin.king@canonical.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09usb: dwc3: pci: add support for the Intel Alder Lake-MHeikki Krogerus
This patch adds the necessary PCI ID for Intel Alder Lake-M devices. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20210408083144.69350-1-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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