Andrey Konovalov 45285dba03 usb: raw-gadget: properly handle interrupted requests ... commit e8033bde451eddfb9b1bbd6e2d848c1b5c277222 upstream. Currently, if a USB request that was queued by Raw Gadget is interrupted (via a signal), wait_for_completion_interruptible returns -ERESTARTSYS. Raw Gadget then attempts to propagate this value to userspace as a return value from its ioctls. However, when -ERESTARTSYS is returned by a syscall handler, the kernel internally restarts the syscall. This doesn't allow userspace applications to interrupt requests queued by Raw Gadget (which is required when the emulated device is asked to switch altsettings). It also violates the implied interface of Raw Gadget that a single ioctl must only queue a single USB request. Instead, make Raw Gadget do what GadgetFS does: check whether the request was interrupted (dequeued with status == -ECONNRESET) and report -EINTR to userspace. Fixes: f2c2e71764 ("usb: gadget: add raw-gadget interface") Cc: stable <stable@kernel.org> Signed-off-by: Andrey Konovalov <andreyknvl@gmail.com> Link: https://lore.kernel.org/r/0db45b1d7cc466e3d4d1ab353f61d63c977fbbc5.1698350424.git.andreyknvl@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-11-08 11:56:22 +01:00
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function	usb: gadget: ncm: Handle decoding of multiple NTB's in unwrap call	2023-10-02 13:38:10 +02:00
legacy	usb: raw-gadget: properly handle interrupted requests	2023-11-08 11:56:22 +01:00
udc	usb: gadget: udc-xilinx: replace memcpy with memcpy_toio	2023-10-02 14:26:36 +02:00
composite.c	usb: gadget: composite: cleanup function config_ep_by_speed_and_alt()	2023-08-22 14:48:33 +02:00
config.c	usb: gadget: config: remove max speed check in usb_assign_descriptors()	2023-08-22 14:48:33 +02:00
configfs.c	usb: gadget: Properly configure the device for remote wakeup	2023-03-29 10:27:00 +02:00
configfs.h
epautoconf.c	usb: gadget: fix for a typo that conveys logically-inverted information.	2021-09-14 10:27:54 +02:00
functions.c
Kconfig	usb: gadget: Add support for USB MIDI 2.0 function driver	2023-07-26 06:38:14 +02:00
Makefile	usb: gadget: Makefile: remove ccflags-y	2022-03-18 12:56:08 +01:00
u_f.c
u_f.h	USB: gadget: u_f: Unbreak offset calculation in VLAs	2020-08-27 09:25:06 +02:00
u_os_desc.h
usbstring.c