Emil Obalski 1b353d5726 usb: Avoid creating duplicate OUT transfers. ... This commit fixes an issue when more than one USB transfer is reserved for same OUT endpoint. There are 2 scenarios when this could happen: - The Host sends SET_CONFIGURATION(1) request twice. - The Host triggers Suspend->Resume->Configured event sequence for the device. USB tranfers are not canceled on SUSPEND event when the device was not configred previously. Because of that USB transfer slot is reserved twice for the same OUT endpoint and lead to shortage of USB transfer slots quickly. Without this patch CDC ACM class reserves duplicated USB transfer slots for one transfer. The sequence of Suspend->Resume events is genereted alongside with Configured and the stack will shortly run out of transfer slots. If the Host, for some reason, decides to send SET_CONFIGURATION request twice the same issue is seen. This patch prevents from reserving additional USB transfer slots twice. Signed-off-by: Emil Obalski <emil.obalski@nordicsemi.no>		2020-08-19 13:19:56 +02:00
..
class	usb: Avoid creating duplicate OUT transfers.	2020-08-19 13:19:56 +02:00
bos.c
CMakeLists.txt
Kconfig
os_desc.c
os_desc.h
usb_descriptor.c	device: Apply config_info rename everywhere	2020-08-11 19:30:53 +02:00
usb_descriptor.h
usb_device.c
usb_transfer.c
usb_transfer.h