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| author | Johan Hovold <johan@kernel.org> | 2017-05-10 18:18:25 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-05-17 11:53:02 +0200 |
| commit | d81182ce30dbd497a1e7047d7fda2af040347790 (patch) | |
| tree | a9e09d6c4ee380b39c9472c59c90dbc2362e9027 /drivers | |
| parent | 5383fae76b8224a8f0465be6ab9c7a645042951a (diff) | |
| download | linux-d81182ce30dbd497a1e7047d7fda2af040347790.tar.gz linux-d81182ce30dbd497a1e7047d7fda2af040347790.tar.bz2 linux-d81182ce30dbd497a1e7047d7fda2af040347790.zip | |
USB: gadget: dummy_hcd: fix hub-descriptor removable fields
Flag the first and only port as removable while also leaving the
remaining bits (including the reserved bit zero) unset in accordance
with the specifications:
"Within a byte, if no port exists for a given location, the bit
field representing the port characteristics shall be 0."
Also add a comment marking the legacy PortPwrCtrlMask field.
Fixes: 1cd8fd2887e1 ("usb: gadget: dummy_hcd: add SuperSpeed support")
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: Tatyana Brokhman <tlinder@codeaurora.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/gadget/udc/dummy_hcd.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c index c79081952ea0..ccabb51cb98d 100644 --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -2008,7 +2008,7 @@ ss_hub_descriptor(struct usb_hub_descriptor *desc) HUB_CHAR_COMMON_OCPM); desc->bNbrPorts = 1; desc->u.ss.bHubHdrDecLat = 0x04; /* Worst case: 0.4 micro sec*/ - desc->u.ss.DeviceRemovable = 0xffff; + desc->u.ss.DeviceRemovable = 0; } static inline void hub_descriptor(struct usb_hub_descriptor *desc) @@ -2020,8 +2020,8 @@ static inline void hub_descriptor(struct usb_hub_descriptor *desc) HUB_CHAR_INDV_PORT_LPSM | HUB_CHAR_COMMON_OCPM); desc->bNbrPorts = 1; - desc->u.hs.DeviceRemovable[0] = 0xff; - desc->u.hs.DeviceRemovable[1] = 0xff; + desc->u.hs.DeviceRemovable[0] = 0; + desc->u.hs.DeviceRemovable[1] = 0xff; /* PortPwrCtrlMask */ } static int dummy_hub_control( |