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| author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2015-12-10 09:59:29 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-01-24 20:16:52 -0800 |
| commit | 0cdd49a1d1a483d80170d9e592f832274e8bce1b (patch) | |
| tree | ac9bafe08c7d07e1e4fa97b53580d37d86137510 /drivers/usb/core/hcd.c | |
| parent | 9508e3b7a70c11370d70252147b75d3024754970 (diff) | |
| download | linux-0cdd49a1d1a483d80170d9e592f832274e8bce1b.tar.bz2 | |
usb: Support USB 3.1 extended port status request
usb 3.1 extend the hub get-port-status request by adding different
request types. the new request types return 4 additional bytes called
extended port status, these bytes are returned after the regular
portstatus and portchange values.
The extended port status contains a speed ID for the currently used
sublink speed. A table of supported Speed IDs with details about the link
is provided by the hub in the device descriptor BOS SuperSpeedPlus
device capability Sublink Speed Attributes.
Support this new request. Ask for the extended port status after port
reset if hub supports USB 3.1. If link is running at SuperSpeedPlus
set the device speed to USB_SPEED_SUPER_PLUS
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core/hcd.c')
| -rw-r--r-- | drivers/usb/core/hcd.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index bca13a0e0326..9af9506352f3 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -668,9 +668,15 @@ nongeneric: /* non-generic request */ switch (typeReq) { case GetHubStatus: - case GetPortStatus: len = 4; break; + case GetPortStatus: + if (wValue == HUB_PORT_STATUS) + len = 4; + else + /* other port status types return 8 bytes */ + len = 8; + break; case GetHubDescriptor: len = sizeof (struct usb_hub_descriptor); break; |