- 12 May, 2022 7 commits
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Kishon Vijay Abraham I authored
Set "HCD_FLAG_DEFER_RH_REGISTER" to hcd->flags in xhci_run() to defer registering primary roothub in usb_add_hcd() if xhci has two roothubs. This will make sure both primary roothub and secondary roothub will be registered along with the second HCD. This is required for cold plugged USB devices to be detected in certain PCIe USB cards (like Inateck USB card connected to AM64 EVM or J7200 EVM). This patch has been added and reverted earier as it triggered a race in usb device enumeration. That race is now fixed in 5.16-rc3, and in stable back to 5.4 commit 6cca13de ("usb: hub: Fix locking issues with address0_mutex") commit 6ae6dc22 ("usb: hub: Fix usb enumeration issue due to address0 race") [minor rebase change, and commit message update -Mathias] CC: stable@vger.kernel.org # 5.4+ Suggested-by:
Mathias Nyman <mathias.nyman@linux.intel.com> Tested-by:
Chris Chiu <chris.chiu@canonical.com> Signed-off-by:
Kishon Vijay Abraham I <kishon@ti.com> Link: https://lore.kernel.org/r/20220510091630.16564-3-kishon@ti.comSigned-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Kishon Vijay Abraham I authored
It has been observed with certain PCIe USB cards (like Inateck connected to AM64 EVM or J7200 EVM) that as soon as the primary roothub is registered, port status change is handled even before xHC is running leading to cold plug USB devices not detected. For such cases, registering both the root hubs along with the second HCD is required. Add support for deferring roothub registration in usb_add_hcd(), so that both primary and secondary roothubs are registered along with the second HCD. This patch has been added and reverted earier as it triggered a race in usb device enumeration. That race is now fixed in 5.16-rc3, and in stable back to 5.4 commit 6cca13de ("usb: hub: Fix locking issues with address0_mutex") commit 6ae6dc22 ("usb: hub: Fix usb enumeration issue due to address0 race") CC: stable@vger.kernel.org # 5.4+ Suggested-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
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Piyush Mehta authored
This patch resolves kernel-doc warnings to add return value description in function comments. Addressed warnings: drivers/usb/host/ehci-xilinx-of.c:37: warning: No description found for return value of 'ehci_xilinx_port_handed_over' drivers/usb/host/ehci-xilinx-of.c:117: warning: No description found for return value of 'ehci_hcd_xilinx_of_probe' drivers/usb/host/ehci-xilinx-of.c:201: warning: No description found for return value of 'ehci_hcd_xilinx_of_remove' Signed-off-by:
Piyush Mehta <piyush.mehta@xilinx.com> Link: https://lore.kernel.org/r/20220509170252.28271-1-piyush.mehta@xilinx.comSigned-off-by:
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Piyush Mehta authored
This patch removes the unused variables assignment warning. Value assigned to variable bufferspace is overwritten, before it can be used. This makes such variable assignment useless. Reported Coverity warning: UNUSED_VALUE Signed-off-by:
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Yang Yingliang authored
The resource is checked in probe function, so there is no need do this check in remove function. Signed-off-by:
Yang Yingliang <yangyingliang@huawei.com> Link: https://lore.kernel.org/r/20220510112804.2401150-1-yangyingliang@huawei.comSigned-off-by:
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Piyush Mehta authored
This patch resolves checkpatch warnings for xilinx EHCI driver. Addressed warnings: WARNING: quoted string split across lines 50: FILE: drivers/usb/host/ehci-xilinx-of.c:50: + "The USB host controller does not support full speed " + "nor low speed devices\n"); WARNING: quoted string split across lines 53: FILE: drivers/usb/host/ehci-xilinx-of.c:53: + "You can reconfigure the host controller to have " + "full speed support\n"); Signed-off-by:
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Kushagra Verma authored
This patch fixes the following checkpatch.pl warning in core.c: WARNING: braces {} are not necessary for any arm of this statement Signed-off-by:Kushagra Verma <kushagra765@outlook.com> Link: https://lore.kernel.org/r/TYZPR01MB39354534E2F9EE4E022DDAFFF8C89@TYZPR01MB3935.apcprd01.prod.exchangelabs.comSigned-off-by:
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- 11 May, 2022 1 commit
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Alan Stern authored
Putting USB gadgets on a new bus of their own encounters a problem when multiple gadgets are present: They all have the same name! The driver core fails with a "sys: cannot create duplicate filename" error when creating any of the /sys/bus/gadget/devices/<gadget-name> symbolic links after the first. This patch fixes the problem by adding a ".N" suffix to each gadget's name when the gadget is registered (where N is a unique ID number), thus making the names distinct. Reported-and-tested-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
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- 05 May, 2022 31 commits
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Michael Grzeschik authored
Just like the header is tracking the formats in a linked list, in this patch we track the frames in a linked list of the formats. It simplifies the parsing of the configfs structure. Signed-off-by:
Michael Grzeschik <m.grzeschik@pengutronix.de> Link: https://lore.kernel.org/r/20220421211427.3400834-6-m.grzeschik@pengutronix.deSigned-off-by:
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Michael Grzeschik authored
The functions and structs of the configfs interface should also be used by the uvc gadget driver. This patch prepares the stack by moving the common structs and functions to the common header file. Reviewed-by:
Paul Elder <paul.elder@ideasonboard.com> Reviewed-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
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Michael Grzeschik authored
Some configfs variables like bDefaultFrameIndex are always starting by 1. This patch adds a check to prevent setting those variables to 0. Signed-off-by:
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Krzysztof Kozlowski authored
Align order of interrupts with Qualcomm DWC3 USB DT schema. No functional impact expected. Signed-off-by:
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20220504131923.214367-14-krzysztof.kozlowski@linaro.orgSigned-off-by:
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Krzysztof Kozlowski authored
Align order of clocks and their names with Qualcomm DWC3 USB DT schema. No functional impact expected. Signed-off-by:
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Krzysztof Kozlowski authored
The clock-names is a required property of DWC3 USB node. Signed-off-by:
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Krzysztof Kozlowski authored
Add dedicated compatible for DWC3 USB node name to allow more accurate DT schema matching. Signed-off-by:
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Krzysztof Kozlowski authored
Add dedicated compatible for DWC3 USB node name to allow more accurate DT schema matching. Signed-off-by:
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Krzysztof Kozlowski authored
Add dedicated compatible for DWC3 USB node name to allow more accurate DT schema matching. Signed-off-by:
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Krzysztof Kozlowski authored
Add dedicated compatible for DWC3 USB node name to allow more accurate DT schema matching. Signed-off-by:
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Krzysztof Kozlowski authored
Align DWC3 USB node names with DT schema ("usb" is expected) and correct the unit addresses to match the "reg" property. This also implies overriding nodes by label, instead of full path. Signed-off-by: -
Krzysztof Kozlowski authored
The bindings defined strict clocks but several variants do not use them in such order. Split the clocks and clock-names per variants to match current DTS usage. In few cases this might not be complete match, due to incomplete DTS. Signed-off-by:
Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220504131923.214367-5-krzysztof.kozlowski@linaro.orgSigned-off-by:
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Krzysztof Kozlowski authored
Add compatibles for dedicated USB DWC3 blocks on Qualcomm IPQ8074, MSM8994, QCS404 and SM6125. They differ against other variants in clock and/or interrupts. Signed-off-by:
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Thinh Nguyen authored
If the controller hasn't DMA'ed the Setup data from its fifo, it won't process the End Transfer command. Polling for the command completion may block the driver from servicing the Setup phase and cause a timeout. Previously we only check and delay issuing End Transfer in the case of endpoint dequeue. Let's do that for all End Transfer scenarios. Signed-off-by:
Thinh Nguyen <Thinh.Nguyen@synopsys.com> Link: https://lore.kernel.org/r/2fcf3b5d90068d549589a57a27a79f76c6769b04.1650593829.git.Thinh.Nguyen@synopsys.comSigned-off-by:
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Thinh Nguyen authored
The driver shouldn't be able to issue End Transfer to the control endpoint at anytime. Typically we should only do so in error cases such as invalid/unexpected direction of Data Phase as described in the control transfer flow of the programming guide. It _may_ end started data phase during controller deinitialization from soft disconnect or driver removal. However, that should not happen because the driver should be maintained in EP0_SETUP_PHASE during driver tear-down. On soft-connect, the controller should be reset from a soft-reset and there should be no issue starting the control endpoint. Signed-off-by:
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Thinh Nguyen authored
Since we can't guarantee that the host won't send new Setup packet before going through the device-initiated disconnect, don't prepare beyond the Setup stage and keep the device in EP0_SETUP_PHASE. This ensures that the device-initated disconnect sequence can go through gracefully. Note that the controller won't service the End Transfer command if it can't DMA out the Setup packet. Signed-off-by:
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Thinh Nguyen authored
If the GEVNTCOUNT indicates events in the event buffer, the driver needs to acknowledge them before the controller can halt. Simply let the interrupt handler acknowledges the remaining event generated by the controller while polling for DSTS.DEVCTLHLT. This avoids disabling irq and taking care of race condition between the interrupt handlers and pullup(). Signed-off-by:
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Thinh Nguyen authored
Move soft-disconnect sequence out of dwc3_gadget_pullup(). No functional change here. Signed-off-by:
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Thinh Nguyen authored
Don't do soft-disconnect if it's previously done. Likewise, don't do soft-connect if the device is currently connected and running. It would break normal operation. Currently the caller of pullup() (udc's sysfs soft_connect) only checks if it had initiated disconnect to prevent repeating soft-disconnect. It doesn't check for soft-connect. To be safe, let's keep the check here regardless whether the udc core is fixed. Signed-off-by:
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Piyush Mehta authored
This patch adds a USB GPIO based reset for dwc3-xilinx driver. The PHY needs to be reset after the completion of phy initialization. As part of the reset, check for gpio-reset binding before toggling the pin. This feature is advantageous when the user toggle GPIO to trigger the ULPI-PHY reset. Delay of milliseconds is added in between low and high to meet the setup and hold time requirement of the reset. The reset-gpio error handling is added for error notification. Some GPIO controllers must be accessed using message-based buses, like I2C or SPI, to address this problem, updates GPIO access with sleep API. This reset is specific to the zynqMp. Signed-off-by:
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Piyush Mehta authored
Added optional property support reset-gpios for the dwc3-Xilinx glue driver. Signed-off-by:
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Rohit Agarwal authored
Add devicetree binding for SDX65 USB controller based on Qcom designware IP. Signed-off-by:
Rohit Agarwal <quic_rohiagar@quicinc.com> Acked-by:
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Krzysztof Kozlowski authored
The generic property, used in most of the drivers and defined in generic dma-common DT bindings, is 'dma-channels'. Signed-off-by:
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Krzysztof Kozlowski authored
The generic property, used in most of the drivers and defined in generic dma-common DT bindings, is 'dma-channels'. Signed-off-by:
Tony Lindgren <tony@atomide.com> Link: https://lore.kernel.org/r/20220503065201.51818-2-krzysztof.kozlowski@linaro.orgSigned-off-by:
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Kushagra Verma authored
This patch removes a possible unnecessary out of memory message from core.c as reported by checkpatch.pl: WARNING: Possible unnecessary 'out of memory' message Signed-off-by:
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Heikki Krogerus authored
It is no longer needed. The sysdev pointer is now used when assigning the ACPI companions to the xHCI ports and USB devices. Assigning the ACPI companion here resulted in the fwnode->secondary pointer to be replaced also for the parent dwc3 device since the primary fwnode (the ACPI companion) was shared. That was unintentional and it created potential side effects like resource leaks. Signed-off-by:
Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20220428111056.3558-3-heikki.krogerus@linux.intel.comSigned-off-by:
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Heikki Krogerus authored
The controller device (hcd) does not always have the ACPI companion assigned to it at all. We can not rely on it when finding the ACPI companion for the root hub. Instead we need to use the sysdev pointer. Signed-off-by:
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Fabien Parent authored
Add binding to support the mtu3 driver on the MT8195 SoC. Signed-off-by:
Fabien Parent <fparent@baylibre.com> Acked-by:
Macpaul Lin <macpaul.lin@mediatek.com> Link: https://lore.kernel.org/r/20220426134106.242353-2-fparent@baylibre.comSigned-off-by:
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Arnd Bergmann authored
After moving the omap1 platform into generalized multiplatform support on ARM, the kernel test robot points out a W=1 warning that now shows up in more configurations: drivers/usb/host/ehci-omap.c:64:19: warning: unused function 'ehci_read' The function was last used 9 years ago and can just be removed. Fixes: 87425ad3 ("USB: ehci-omap: Remove PHY reset handling code") Reported-by:
kernel test robot <lkp@intel.com> Acked-by:
Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20220428102314.950323-1-arnd@kernel.orgSigned-off-by:
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Colin Ian King authored
Currently when driver->match_existing_only is true, the error return is set to -EBUSY however ret is then set to 0 at the end of the if/else statement. I believe the ret = 0 statement should be set in the else part of the if statement and not at the end to ensure -EBUSY is being returned correctly. Detected by clang scan: drivers/usb/gadget/udc/core.c:1558:4: warning: Value stored to 'ret' is never read [deadcode.DeadStores] Fixes: fc274c1e ("USB: gadget: Add a new bus for gadgets") Acked-by:
Colin Ian King <colin.i.king@gmail.com> Link: https://lore.kernel.org/r/20220504135840.232209-1-colin.i.king@gmail.comSigned-off-by:
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Marek Szyprowski authored
UDC driver should not touch gadget's driver internals, especially it should not reset driver->bus. This wasn't harmful so far, but since commit fc274c1e ("USB: gadget: Add a new bus for gadgets") gadget subsystem got it's own bus and messing with ->bus triggers the following NULL pointer dereference: dwc2 12480000.hsotg: bound driver g_ether 8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 00000000 [00000000] *pgd=00000000 Internal error: Oops: 5 [#1] SMP ARM Modules linked in: ... CPU: 0 PID: 620 Comm: modprobe Not tainted 5.18.0-rc5-next-20220504 #11862 Hardware name: Samsung Exynos (Flattened Device Tree) PC is at module_add_driver+0x44/0xe8 LR is at sysfs_do_create_link_sd+0x84/0xe0 ... Process modprobe (pid: 620, stack limit = 0x(ptrval)) ... module_add_driver from bus_add_driver+0xf4/0x1e4 bus_add_driver from driver_register+0x78/0x10c driver_register from usb_gadget_register_driver_owner+0x40/0xb4 usb_gadget_register_driver_owner from do_one_initcall+0x44/0x1e0 do_one_initcall from do_init_module+0x44/0x1c8 do_init_module from load_module+0x19b8/0x1b9c load_module from sys_finit_module+0xdc/0xfc sys_finit_module from ret_fast_syscall+0x0/0x54 Exception stack(0xf1771fa8 to 0xf1771ff0) ... dwc2 12480000.hsotg: new device is high-speed ---[ end trace 0000000000000000 ]--- Fix this by removing driver->bus entry reset. Signed-off-by:
Marek Szyprowski <m.szyprowski@samsung.com> Link: https://lore.kernel.org/r/20220505104618.22729-1-m.szyprowski@samsung.comSigned-off-by:
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- 03 May, 2022 1 commit
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Greg Kroah-Hartman authored
This reverts commit 8e8b1195. The series still has built errors as reported in linux-next, so revert it for now. Reported-by:
Stephen Rothwell <sfr@canb.auug.org.au> Link: https://lore.kernel.org/r/20220502210728.0b36f3cd@canb.auug.org.au Cc: Stephen Boyd <swboyd@chromium.org> Cc: Douglas Anderson <dianders@chromium.org> Cc: Rob Herring <robh@kernel.org> Cc: Matthias Kaehlcke <mka@chromium.org> Signed-off-by:
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