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* Merge branch 'for-linus' of ↵Linus Torvalds2022-08-051-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32 Pull AVR32 updates from Hans-Christian Noren Egtvedt: "Mostly changes to documentation and comments" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32: video:backlight: remove reference to AVR32 architecture in ltv350qv video: remove support for non-existing atmel,at32ap-lcdc in atmel_lcdfb usb:udc: remove reference to AVR32 architecture in Atmel USBA Kconfig sound:spi: remove reference to AVR32 in Atmel AT73C213 DAC driver net: remove cdns,at32ap7000-macb device tree entry misc: update maintainer email address and description for atmel-ssc mfd: remove reference to AVR32 architecture in atmel-smc.c dma:dw: remove reference to AVR32 architecture in core.c
| * usb:udc: remove reference to AVR32 architecture in Atmel USBA KconfigHans-Christian Noren Egtvedt2022-08-031-2/+2
| | | | | | | | | | | | | | The AVR32 architecture does no longer exist in the Linux kernel, hence remove a reference to it in Kconfig help text to avoid confusion. Signed-off-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
* | USB: gadget: Fix use-after-free Read in usb_udc_uevent()Alan Stern2022-07-271-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The syzbot fuzzer found a race between uevent callbacks and gadget driver unregistration that can cause a use-after-free bug: --------------------------------------------------------------- BUG: KASAN: use-after-free in usb_udc_uevent+0x11f/0x130 drivers/usb/gadget/udc/core.c:1732 Read of size 8 at addr ffff888078ce2050 by task udevd/2968 CPU: 1 PID: 2968 Comm: udevd Not tainted 5.19.0-rc4-next-20220628-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:317 [inline] print_report.cold+0x2ba/0x719 mm/kasan/report.c:433 kasan_report+0xbe/0x1f0 mm/kasan/report.c:495 usb_udc_uevent+0x11f/0x130 drivers/usb/gadget/udc/core.c:1732 dev_uevent+0x290/0x770 drivers/base/core.c:2424 --------------------------------------------------------------- The bug occurs because usb_udc_uevent() dereferences udc->driver but does so without acquiring the udc_lock mutex, which protects this field. If the gadget driver is unbound from the udc concurrently with uevent processing, the driver structure may be accessed after it has been deallocated. To prevent the race, we make sure that the routine holds the mutex around the racing accesses. Link: <https://lore.kernel.org/all/0000000000004de90405a719c951@google.com> CC: stable@vger.kernel.org # fc274c1e9973 Reported-and-tested-by: syzbot+b0de012ceb1e2a97891b@syzkaller.appspotmail.com Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/YtlrnhHyrHsSky9m@rowland.harvard.edu Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | USB: gadget: f_acm: use CDC definesJohan Hovold2022-07-251-15/+5
| | | | | | | | | | | | | | | | Use the new CDC control-line and serial-state defines. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20220725075841.1187-7-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | Merge 5.19-rc7 into usb-nextGreg Kroah-Hartman2022-07-181-2/+4
|\| | | | | | | | | | | We need the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * usb: gadget: uvc: fix changing interface name via configfsMichael Grzeschik2022-07-081-2/+4
| | | | | | | | | | | | | | | | | | | | | | When setting the function name, it is always truncated by one char since snprintf is always including the null-termination in the len parameter. We use strscpy and fix the size setting to use len + 1 instead. Fixes: 324e4f85070f ("usb: gadget: uvc: allow changing interface name via configfs") Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Link: https://lore.kernel.org/r/20220707115612.2760569-1-m.grzeschik@pengutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: aspeed-vhub: Fix refcount leak bug in ast_vhub_init_desc()Liang He2022-07-141-1/+3
| | | | | | | | | | | | | | | | | | | | We should call of_node_put() for the reference returned by of_get_child_by_name() which has increased the refcount. Fixes: 30d2617fd7ed ("usb: gadget: aspeed: allow to set usb strings in device tree") Signed-off-by: Liang He <windhl@126.com> Link: https://lore.kernel.org/r/20220713120528.368168-1-windhl@126.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: f_mass_storage: forced_eject attributeMaxim Devaev2022-07-143-0/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It allows to reset prevent_medium_removal flag and "eject" the image. This can be useful to free the drive from a hunging host or if the host continues to use the drive even after unmounting (Linux does this). It's also a bit like using an unfolded paperclip on an optical drive. Previously, the undocumented method of sending SIGUSR1 to a special "file-storage" kernel thread could be used for these purposes, but when using multiple storages there was no way to distinguish one from the other, so we had to send a signal to everyone. Reviewed-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Maxim Devaev <mdevaev@gmail.com> Link: https://lore.kernel.org/r/20220711102956.19642-1-mdevaev@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: udc: amd5536 depends on HAS_DMARandy Dunlap2022-07-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | USB_AMD5536UDC should depend on HAS_DMA since it selects USB_SNP_CORE, which depends on HAS_DMA and since 'select' does not follow any dependency chains. Fixes this kconfig warning: WARNING: unmet direct dependencies detected for USB_SNP_CORE Depends on [n]: USB_SUPPORT [=y] && USB_GADGET [=y] && (USB_AMD5536UDC [=y] || USB_SNP_UDC_PLAT [=n]) && HAS_DMA [=n] Selected by [y]: - USB_AMD5536UDC [=y] && USB_SUPPORT [=y] && USB_GADGET [=y] && USB_PCI [=y] Fixes: 97b3ffa233b9 ("usb: gadget: udc: amd5536: split core and PCI layer") Cc: Raviteja Garimella <raviteja.garimella@broadcom.com> Cc: Felipe Balbi <balbi@kernel.org> Cc: linux-usb@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20220709013601.7536-1-rdunlap@infradead.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | gadgetfs: ep_io - wait until IRQ finishesJozef Martiniak2022-07-081-0/+1
| | | | | | | | | | | | | | | | | | | | | | after usb_ep_queue() if wait_for_completion_interruptible() is interrupted we need to wait until IRQ gets finished. Otherwise complete() from epio_complete() can corrupt stack. Signed-off-by: Jozef Martiniak <jomajm@gmail.com> Link: https://lore.kernel.org/r/20220708070645.6130-1-jomajm@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: udc: atmel: convert to platform driverMichael Walle2022-07-081-4/+4
| | | | | | | | | | | | | | | | | | | | | | The driver won't probe on a LAN9668 because the pinctrl driver isn't ready yet. Probe deferral is not supported because the init section is already discarded. With fw_devlink enabled, the probe won't even be called. Convert the driver to a proper platform driver. Signed-off-by: Michael Walle <michael@walle.cc> Link: https://lore.kernel.org/r/20220705131951.1388968-2-michael@walle.cc Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: udc: atmel: check rc of devm_gpiod_get_optional()Michael Walle2022-07-081-0/+2
| | | | | | | | | | | | | | | | | | devm_gpiod_get_optional() might still return an error code, esp. EPROBE_DEFER. Return any errors. Signed-off-by: Michael Walle <michael@walle.cc> Link: https://lore.kernel.org/r/20220705131951.1388968-1-michael@walle.cc Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | USB: gadget: udc: tracing: Do not open code __string() with __dynamic_array()Steven Rostedt (Google)2022-07-081-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The event classes udc_log_ep and udc_log_req both declare: __dynamic_array(char, name, UDC_TRACE_STR_MAX) Which will reserve UDC_TRACE_STR_MAX bytes on the ring buffer for the event to write in name. It then uses snprintf() to write into that space. Assuming that the string being copied is nul terminated, it is better to just use the __string() helper. That way only the size of the string is saved into the ring buffer and not the max size (yes, the entire UDC_TRACE_STR_MAX is used in the trace event, and anything not used is just junk in the ring buffer). Worse, there's also meta data saved into the event that denotes where the string is stored in the event and also saves its size, which is always going to be UDC_TRACE_STR_MAX. Convert both to use the __string() and __assign_str() helpers that are for this kind of use case. Cc: Felipe Balbi <balbi@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-usb@vger.kernel.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Link: https://lore.kernel.org/r/20220703091449.317f94b1@rorschach.local.home Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: f_mass_storage: Make CD-ROM emulation works with Windows OSNeal Liu2022-06-291-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | Add read TOC with format 1 to support CD-ROM emulation with Windows OS. This patch is tested on Windows OS Server 2019. Fixes: 89ada0fe669a ("usb: gadget: f_mass_storage: Make CD-ROM emulation work with Mac OS-X") Reviewed-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Neal Liu <neal_liu@aspeedtech.com> Link: https://lore.kernel.org/r/20220628021436.3252262-1-neal_liu@aspeedtech.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: aspeed_udc: fix handling of tx_len == 0Dan Carpenter2022-06-291-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The bug is that we should still enter this loop if "tx_len" is zero. After adding the "last" variable, then the "chunk >= 0" condition is no longer required but I left it for readability. Fixes: c09b1f372e74 ("usb: gadget: aspeed_udc: cleanup loop in ast_dma_descriptor_setup()") Reported-by: Neal Liu <neal_liu@aspeedtech.com> Reviewed-by: Neal Liu <neal_liu@aspeedtech.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/Yrq6F5okoX1y05rT@kili Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | Merge 5.19-rc4 into usb-nextGreg Kroah-Hartman2022-06-272-16/+50
|\| | | | | | | | | | | We need the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * USB: gadget: Fix double-free bug in raw_gadget driverAlan Stern2022-06-241-6/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Re-reading a recently merged fix to the raw_gadget driver showed that it inadvertently introduced a double-free bug in a failure pathway. If raw_ioctl_init() encounters an error after the driver ID number has been allocated, it deallocates the ID number before returning. But when dev_free() runs later on, it will then try to deallocate the ID number a second time. Closely related to this issue is another error in the recent fix: The ID number is stored in the raw_dev structure before the code checks to see whether the structure has already been initialized, in which case the new ID number would overwrite the earlier value. The solution to both bugs is to keep the new ID number in a local variable, and store it in the raw_dev structure only after the check for prior initialization. No errors can occur after that point, so the double-free will never happen. Fixes: f2d8c2606825 ("usb: gadget: Fix non-unique driver names in raw-gadget driver") CC: Andrey Konovalov <andreyknvl@gmail.com> CC: <stable@vger.kernel.org> Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/YrMrRw5AyIZghN0v@rowland.harvard.edu Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * usb: gadget: uvc: fix list double add in uvcg_video_pumpDan Vacura2022-06-211-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A panic can occur if the endpoint becomes disabled and the uvcg_video_pump adds the request back to the req_free list after it has already been queued to the endpoint. The endpoint complete will add the request back to the req_free list. Invalidate the local request handle once it's been queued. <6>[ 246.796704][T13726] configfs-gadget gadget: uvc: uvc_function_set_alt(1, 0) <3>[ 246.797078][ T26] list_add double add: new=ffffff878bee5c40, prev=ffffff878bee5c40, next=ffffff878b0f0a90. <6>[ 246.797213][ T26] ------------[ cut here ]------------ <2>[ 246.797224][ T26] kernel BUG at lib/list_debug.c:31! <6>[ 246.807073][ T26] Call trace: <6>[ 246.807180][ T26] uvcg_video_pump+0x364/0x38c <6>[ 246.807366][ T26] process_one_work+0x2a4/0x544 <6>[ 246.807394][ T26] worker_thread+0x350/0x784 <6>[ 246.807442][ T26] kthread+0x2ac/0x320 Fixes: f9897ec0f6d3 ("usb: gadget: uvc: only pump video data if necessary") Cc: stable@vger.kernel.org Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Dan Vacura <w36195@motorola.com> Link: https://lore.kernel.org/r/20220617163154.16621-1-w36195@motorola.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * usb: gadget: Fix non-unique driver names in raw-gadget driverAlan Stern2022-06-211-16/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In a report for a separate bug (which has already been fixed by commit 5f0b5f4d50fa "usb: gadget: fix race when gadget driver register via ioctl") in the raw-gadget driver, the syzbot console log included error messages caused by attempted registration of a new driver with the same name as an existing driver: > kobject_add_internal failed for raw-gadget with -EEXIST, don't try to register things with the same name in the same directory. > UDC core: USB Raw Gadget: driver registration failed: -17 > misc raw-gadget: fail, usb_gadget_register_driver returned -17 These errors arise because raw_gadget.c registers a separate UDC driver for each of the UDC instances it creates, but these drivers all have the same name: "raw-gadget". Until recently this wasn't a problem, but when the "gadget" bus was added and UDC drivers were registered on this bus, it became possible for name conflicts to cause the registrations to fail. The reason is simply that the bus code in the driver core uses the driver name as a sysfs directory name (e.g., /sys/bus/gadget/drivers/raw-gadget/), and you can't create two directories with the same pathname. To fix this problem, the driver names used by raw-gadget are made distinct by appending a unique ID number: "raw-gadget.N", with a different value of N for each driver instance. And to avoid the proliferation of error handling code in the raw_ioctl_init() routine, the error return paths are refactored into the common pattern (goto statements leading to cleanup code at the end of the routine). Link: https://lore.kernel.org/all/0000000000008c664105dffae2eb@google.com/ Fixes: fc274c1e9973 "USB: gadget: Add a new bus for gadgets" CC: Andrey Konovalov <andreyknvl@gmail.com> CC: <stable@vger.kernel.org> Reported-and-tested-by: syzbot+02b16343704b3af1667e@syzkaller.appspotmail.com Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Acked-by: Hillf Danton <hdanton@sina.com> Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/YqdG32w+3h8c1s7z@rowland.harvard.edu Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: u_ether: Remove duplicated include in u_ether.cYang Li2022-06-241-1/+0
| | | | | | | | | | | | | | | | | | | | Fix following includecheck warning: ./drivers/usb/gadget/function/u_ether.c: linux/etherdevice.h is included more than once. Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Link: https://lore.kernel.org/r/20220623010808.9816-1-yang.lee@linux.alibaba.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: Remove unnecessary print function dev_err()Jiapeng Chong2022-06-211-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The print function dev_err() is redundant because platform_get_irq() already prints an error. This was found by coccicheck: ./drivers/usb/gadget/udc/aspeed_udc.c:1546:2-9: line 1546 is redundant because platform_get_irq() already prints an error. Acked-by: Neal Liu <neal_liu@aspeedtech.com> Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Link: https://lore.kernel.org/r/20220616090410.128483-1-jiapeng.chong@linux.alibaba.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: ast2600: Fix a couple of spelling mistakesColin Ian King2022-06-211-2/+2
| | | | | | | | | | | | | | | | | | | | | | There are a couple of spelling mistakes, one in a dev_warn message and another in a SETUP_DBG message. Fix these and remove an extraneous white space too. Acked-by: Neal Liu <neal_liu@aspeedtech.com> Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Link: https://lore.kernel.org/r/20220615073518.192827-1-colin.i.king@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: aspeed_udc: cleanup loop in ast_dma_descriptor_setup()Dan Carpenter2022-06-211-13/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The "chunk >= 0" condition does not work because count is a u32. Also, really we shouldn't enter the loop when "chunk" is zero. Once that condition is fixed then there is no need for the "last" variable. I reversed the "if (chunk <= ep->chunk_max)" as well. The new loop is much simpler. Fixes: 055276c13205 ("usb: gadget: add Aspeed ast2600 udc driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/Yq2SvM2bbrtSd1H9@kili Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: aspeed_udc: fix missing spin_unlock_irqrestore in ast_udc_ep_queueZheng Bin2022-06-211-1/+2
| | | | | | | | | | | | | | | | | | | | | | ast_udc_ep_queue misses spin_unlock_irqrestore in an error path, this patch fixes that. Fixes: 055276c13205 ("usb: gadget: add Aspeed ast2600 udc driver") Reviewed-by: Neal Liu <neal_liu@aspeedtech.com> Signed-off-by: Zheng Bin <zhengbin13@huawei.com> Link: https://lore.kernel.org/r/20220616133508.3655864-1-zhengbin13@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | Merge v5.19-rc3 into usb-nextGreg Kroah-Hartman2022-06-203-17/+36
|\| | | | | | | | | | | We need the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * usb: gadget: f_fs: change ep->ep safe in ffs_epfile_io()Linyu Yuan2022-06-101-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In ffs_epfile_io(), when read/write data in blocking mode, it will wait the completion in interruptible mode, if task receive a signal, it will terminate the wait, at same time, if function unbind occurs, ffs_func_unbind() will kfree all eps, ffs_epfile_io() still try to dequeue request by dereferencing ep which may become invalid. Fix it by add ep spinlock and will not dereference ep if it is not valid. Cc: <stable@vger.kernel.org> # 5.15 Reported-by: Michael Wu <michael@allwinnertech.com> Tested-by: Michael Wu <michael@allwinnertech.com> Reviewed-by: John Keeping <john@metanate.com> Signed-off-by: Linyu Yuan <quic_linyyuan@quicinc.com> Link: https://lore.kernel.org/r/1654863478-26228-3-git-send-email-quic_linyyuan@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * usb: gadget: f_fs: change ep->status safe in ffs_epfile_io()Linyu Yuan2022-06-101-15/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a task read/write data in blocking mode, it will wait the completion in ffs_epfile_io(), if function unbind occurs, ffs_func_unbind() will kfree ffs ep, once the task wake up, it still dereference the ffs ep to obtain the request status. Fix it by moving the request status to io_data which is stack-safe. Cc: <stable@vger.kernel.org> # 5.15 Reported-by: Michael Wu <michael@allwinnertech.com> Tested-by: Michael Wu <michael@allwinnertech.com> Reviewed-by: John Keeping <john@metanate.com> Signed-off-by: Linyu Yuan <quic_linyyuan@quicinc.com> Link: https://lore.kernel.org/r/1654863478-26228-2-git-send-email-quic_linyyuan@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * usb: gadget: u_ether: fix regression in setting fixed MAC addressMarian Postevca2022-06-101-2/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In systemd systems setting a fixed MAC address through the "dev_addr" module argument fails systematically. When checking the MAC address after the interface is created it always has the same but different MAC address to the one supplied as argument. This is partially caused by systemd which by default will set an internally generated permanent MAC address for interfaces that are marked as having a randomly generated address. Commit 890d5b40908bfd1a ("usb: gadget: u_ether: fix race in setting MAC address in setup phase") didn't take into account the fact that the interface must be marked as having a set MAC address when it's set as module argument. Fixed by marking the interface with NET_ADDR_SET when the "dev_addr" module argument is supplied. Fixes: 890d5b40908bfd1a ("usb: gadget: u_ether: fix race in setting MAC address in setup phase") Cc: stable@vger.kernel.org Signed-off-by: Marian Postevca <posteuca@mutex.one> Link: https://lore.kernel.org/r/20220603153459.32722-1-posteuca@mutex.one Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * usb: gadget: lpc32xx_udc: Fix refcount leak in lpc32xx_udc_probeMiaoqian Lin2022-06-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | of_parse_phandle() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak. of_node_put() will check NULL pointer. Fixes: 24a28e428351 ("USB: gadget driver for LPC32xx") Cc: stable <stable@kernel.org> Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Link: https://lore.kernel.org/r/20220603140246.64529-1-linmq006@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: add Aspeed ast2600 udc driverNeal Liu2022-06-123-0/+1610
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Aspeed udc is compliant with USB2.0, supports USB High Speed and Full Speed, backward compatible with USB1.1. Supports independent DMA channel for each generic endpoint. Supports 32/256 stages descriptor mode for all generic endpoints. This driver supports full functionality including single/multiple stages descriptor mode, and exposes 1 UDC gadget driver. Signed-off-by: Neal Liu <neal_liu@aspeedtech.com> Link: https://lore.kernel.org/r/20220523030134.2977116-2-neal_liu@aspeedtech.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: uvc: call uvc uvcg_warn on completed status instead of uvcg_infoMichael Grzeschik2022-06-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | Likewise to the uvcvideo hostside driver, this patch is changing the usb_request message of an non zero completion handler call from dev_info to dev_warn. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Link: https://lore.kernel.org/r/20220529223848.105914-4-m.grzeschik@pengutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: uvc: calculate the number of request depending on framesizeMichael Grzeschik2022-06-101-5/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current limitation of possible number of requests being handled is dependent on the gadget speed. It makes more sense to depend on the typical frame size when calculating the number of requests. This patch is changing this and is using the previous limits as boundaries for reasonable minimum and maximum number of requests. For a 1080p jpeg encoded video stream with a maximum imagesize of e.g. 800kB with a maxburst of 8 and an multiplier of 1 the resulting number of requests is calculated to 49. 800768 1 nreqs = ------ * -------------- ~= 49 2 (1024 * 8 * 1) Tested-by: Dan Vacura <w36195@motorola.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Link: https://lore.kernel.org/r/20220529223848.105914-2-m.grzeschik@pengutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: bdc: fix typo in commentJulia Lawall2022-06-101-1/+1
| | | | | | | | | | | | | | | | | | | | Spelling mistake (triple letters) in comment. Detected with the help of Coccinelle. Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> Link: https://lore.kernel.org/r/20220521111145.81697-92-Julia.Lawall@inria.fr Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: tegra-xudc: Fix error check in tegra_xudc_powerdomain_init()Tang Bin2022-06-101-4/+4
| | | | | | | | | | | | | | | | | | | | dev_pm_domain_attach_by_name() may return NULL in some cases, so IS_ERR() doesn't meet the requirements. Thus fix it. Fixes: 49db427232fe ("usb: gadget: Add UDC driver for tegra XUSB device mode controller") Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com> Link: https://lore.kernel.org/r/20220525135332.23144-1-tangbin@cmss.chinamobile.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | usb: gadget: uvc: Fix comment blocks styleLaurent Pinchart2022-06-103-17/+31
|/ | | | | | | | | | | | | | | | | | | | | | | | The UVC gadget driver historically uses the /* Comment * style */ for multi-line block comments, which is frowned upon. Patches for the driver are required to use the more standard /* * Comment * style */ style. This result in inconsistencies. Fix it by converting all remaining instances of the old style. Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Link: https://lore.kernel.org/r/20220608174918.14656-1-laurent.pinchart@ideasonboard.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge tag 'usb-5.19-rc1' of ↵Linus Torvalds2022-06-0323-327/+402
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB / Thunderbolt updates from Greg KH: "Here is the "big" set of USB and Thunderbolt driver changes for 5.18-rc1. For the most part it's been a quiet development cycle for the USB core, but there are the usual "hot spots" of development activity. Included in here are: - Thunderbolt driver updates: - fixes for devices without displayport adapters - lane bonding support and improvements - other minor changes based on device testing - dwc3 gadget driver changes. It seems this driver will never be finished given that the IP core is showing up in zillions of new devices and each implementation decides to do something different with it... - uvc gadget driver updates as more devices start to use and rely on this hardware as well - usb_maxpacket() api changes to remove an unneeded and unused parameter. - usb-serial driver device id updates and small cleanups - typec cleanups and fixes based on device testing - device tree updates for usb properties - lots of other small fixes and driver updates. All of these have been in linux-next for weeks with no reported problems" * tag 'usb-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (154 commits) USB: new quirk for Dell Gen 2 devices usb: dwc3: core: Add error log when core soft reset failed usb: dwc3: gadget: Move null pinter check to proper place usb: hub: Simplify error and success path in port_over_current_notify usb: cdns3: allocate TX FIFO size according to composite EP number usb: dwc3: Fix ep0 handling when getting reset while doing control transfer usb: Probe EHCI, OHCI controllers asynchronously usb: isp1760: Fix out-of-bounds array access xhci: Don't defer primary roothub registration if there is only one roothub USB: serial: option: add Quectel BG95 modem USB: serial: pl2303: fix type detection for odd device xhci: Allow host runtime PM as default for Intel Alder Lake N xHCI xhci: Remove quirk for over 10 year old evaluation hardware xhci: prevent U2 link power state if Intel tier policy prevented U1 xhci: use generic command timer for stop endpoint commands. usb: host: xhci-plat: omit shared hcd if either root hub has no ports usb: host: xhci-plat: prepare operation w/o shared hcd usb: host: xhci-plat: create shared hcd after having added main hcd xhci: prepare for operation w/o shared hcd xhci: factor out parts of xhci_gen_setup() ...
| * usb: gadget: udc: Remove useless variable assignment in xudc_read_fifo()Piyush Mehta2022-05-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | 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: Piyush Mehta <piyush.mehta@xilinx.com> Link: https://lore.kernel.org/r/20220506175349.10102-1-piyush.mehta@xilinx.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * USB: gadget: Add ID numbers to gadget namesAlan Stern2022-05-111-2/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: Alan Stern <stern@rowland.harvard.edu> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Fixes: fc274c1e9973 ("USB: gadget: Add a new bus for gadgets") Link: https://lore.kernel.org/r/YnqKAXKyp9Vq/pbn@rowland.harvard.edu Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * usb: gadget: uvc: track frames in format entriesMichael Grzeschik2022-05-052-1/+30
| | | | | | | | | | | | | | | | | | | | | | 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.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * usb: gadget: uvc: move structs to common headerMichael Grzeschik2022-05-053-111/+115
| | | | | | | | | | | | | | | | | | | | | | | | | | 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: Michael Grzeschik <m.grzeschik@pengutronix.de> Link: https://lore.kernel.org/r/20220421211427.3400834-5-m.grzeschik@pengutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * usb: gadget: uvc: prevent index variables to start from 0Michael Grzeschik2022-05-051-0/+12
| | | | | | | | | | | | | | | | | | | | 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: Michael Grzeschik <m.grzeschik@pengutronix.de> Link: https://lore.kernel.org/r/20220421211427.3400834-4-m.grzeschik@pengutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * USB: gadget: Fix return of -EBUSYColin Ian King2022-05-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: fc274c1e9973 ("USB: gadget: Add a new bus for gadgets") Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Link: https://lore.kernel.org/r/20220504135840.232209-1-colin.i.king@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * Merge 5.18-rc5 into usb-nextGreg Kroah-Hartman2022-05-032-0/+4
| |\ | | | | | | | | | | | | | | | | | | | | | We need the USB fixes in here, and this resolves a merge issue in drivers/usb/dwc3/drd.c Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | USB: gadget: Add a new bus for gadgetsAlan Stern2022-04-261-134/+122
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a "gadget" bus and uses it for registering gadgets and their drivers. From now on, bindings will be managed by the driver core rather than through ad-hoc manipulations in the UDC core. As part of this change, the driver_pending_list is removed. The UDC core won't need to keep track of unbound drivers for later binding, because the driver core handles all of that for us. However, we do need one new feature: a way to prevent gadget drivers from being bound to more than one gadget at a time. The existing code does this automatically, but the driver core doesn't -- it's perfectly happy to bind a single driver to all the matching devices on the bus. The patch adds a new bitflag to the usb_gadget_driver structure for this purpose. A nice side effect of this change is a reduction in the total lines of code, since now the driver core will do part of the work that the UDC used to do. A possible future patch could add udc devices to the gadget bus, say as a separate device type. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/YmSpdxaDNeC2BBOf@rowland.harvard.edu Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | USB: gadget: Fix mistakes in UDC core kerneldocAlan Stern2022-04-261-9/+5
| | | | | | | | | | | | | | | | | | | | | | | | This patch fixes some minor mistakes in the UDC core's kerneldoc. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/YmSpKpnWR8WWEk/p@rowland.harvard.edu Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | USB: gadget: Register udc before gadgetAlan Stern2022-04-261-8/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In preparation for adding a "gadget" bus, this patch reverses the order of registration of udc and gadget devices in usb_add_gadget(). The current code adds the gadget device first, probably because that was more convenient at the time and the order didn't really matter. But with the upcoming change, adding the gadget will cause driver probing to occur. Unwinding that on the error pathway will become much more obtrusive, not to mention the fact that a gadget driver might not work properly before the udc is registered. It's better to register the udc device first, particularly since that doesn't involve a bus or driver binding and therefore is simpler to unwind. For symmetry, the order of unregistration in usb_del_gadget() is likewise reversed. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/YmSo6fU1FlNq8cOZ@rowland.harvard.edu Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | USB: gadget: Rename usb_gadget_probe_driver()Alan Stern2022-04-266-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In preparation for adding a "gadget" bus, this patch renames usb_gadget_probe_driver() to usb_gadget_register_driver(). The new name will be more accurate, since gadget drivers will be registered on the gadget bus and the probing will be done by the driver core, not the UDC core. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/YmSc29YZvxgT5fEJ@rowland.harvard.edu Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | usb: gadget: net2272: clean up commentsTom Rix2022-04-211-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Spelling replacements definiton to definition acceptible to acceptable seperately to separately Signed-off-by: Tom Rix <trix@redhat.com> Link: https://lore.kernel.org/r/20220419182142.1805918-1-trix@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | usb: gadget: tegra-xudc: clean up commentsTom Rix2022-04-211-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Spelling replacements endpiont to endpoint Compliacne to Compliance Signed-off-by: Tom Rix <trix@redhat.com> Link: https://lore.kernel.org/r/20220417130712.3932247-1-trix@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | usb: gadget: s3c-hsudc: clean up commentsTom Rix2022-04-211-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Spelling replacements occured to occurred currenty to currently Signed-off-by: Tom Rix <trix@redhat.com> Link: https://lore.kernel.org/r/20220418133619.2852678-1-trix@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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