diff options
| author |   Lorenzo Colitti <lorenzo@google.com> | 2020-08-25 14:55:04 +0900 |
|---|---|---|
| committer |   Felipe Balbi <balbi@kernel.org> | 2020-10-02 09:57:41 +0300 |
| commit | a176b1a2a73c9598f77f2fa3df67184321092f55 (patch) | |
| tree | 31fd0efc97e23e3753756055d65554ae1148c5f9 /drivers/usb/gadget/function/f_ncm.c | |
| parent | usb: gadget: f_ncm: fix ncm_bitrate for SuperSpeed and above. (diff) | |
| download | linux-dev-a176b1a2a73c9598f77f2fa3df67184321092f55.tar.xz linux-dev-a176b1a2a73c9598f77f2fa3df67184321092f55.zip | |
usb: gadget: f_ncm: set SuperSpeed bulk descriptor bMaxBurst to 15
This improves performance on fast connections. When directly
connecting to a Linux laptop running 5.6, single-stream iperf3
goes from ~1.7Gbps to ~2.3Gbps out, and from ~620Mbps to ~720Mbps
in.
Reviewed-by: Maciej Żenczykowski <maze@google.com>
Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Diffstat (limited to 'drivers/usb/gadget/function/f_ncm.c')
| -rw-r--r-- | drivers/usb/gadget/function/f_ncm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c index 7672fa25085b..ffa397a1c3d4 100644 --- a/drivers/usb/gadget/function/f_ncm.c +++ b/drivers/usb/gadget/function/f_ncm.c @@ -378,7 +378,7 @@ static struct usb_ss_ep_comp_descriptor ss_ncm_bulk_comp_desc = { .bDescriptorType = USB_DT_SS_ENDPOINT_COMP, /* the following 2 values can be tweaked if necessary */ - /* .bMaxBurst = 0, */ + .bMaxBurst = 15, /* .bmAttributes = 0, */ }; |