From: Lorenzo Colitti lorenzo@google.com
[ Upstream commit 7974ecd7d3c0f42a98566f281e44ea8573a2ad88 ]
Currently, enabling f_ncm at SuperSpeed Plus speeds results in an oops in config_ep_by_speed because ncm_set_alt passes in NULL ssp_descriptors. Fix this by re-using the SuperSpeed descriptors. This is safe because usb_assign_descriptors calls usb_copy_descriptors.
Tested: enabled f_ncm on a dwc3 gadget and 10Gbps link, ran iperf Reviewed-by: Maciej Żenczykowski maze@google.com Signed-off-by: Lorenzo Colitti lorenzo@google.com Signed-off-by: Felipe Balbi balbi@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/gadget/function/f_ncm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/gadget/function/f_ncm.c +++ b/drivers/usb/gadget/function/f_ncm.c @@ -1536,7 +1536,7 @@ static int ncm_bind(struct usb_configura fs_ncm_notify_desc.bEndpointAddress;
status = usb_assign_descriptors(f, ncm_fs_function, ncm_hs_function, - ncm_ss_function, NULL); + ncm_ss_function, ncm_ss_function); if (status) goto fail;