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usb: gadget: f_ncm: allow using NCM in SuperSpeed Plus gadgets. 

[ Upstream commit 7974ecd7d3 ]

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>
5.4-rM2-2.2.x-imx-squashed
Lorenzo Colitti 2020-08-25 14:55:05 +09:00 committed by Greg Kroah-Hartman
parent efb893a56c
commit 3c7ccd7d4a
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/gadget/function/f_ncm.c
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@ -1536,7 +1536,7 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f)
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;