diff options
| author | Johan Hovold <johan@kernel.org> | 2017-05-10 18:18:29 +0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2017-09-15 18:29:42 +0100 |
| commit | f6021896f0331b0e51878ed5064ce5fb250c0e77 (patch) | |
| tree | eceea44999b74753c083cbbae411263495bb8acd /include | |
| parent | a42987c9b4b631f38b147d07f8a920b38973557a (diff) | |
USB: hub: fix SS max number of ports
commit 93491ced3c87c94b12220dbac0527e1356702179 upstream.
Add define for the maximum number of ports on a SuperSpeed hub as per
USB 3.1 spec Table 10-5, and use it when verifying the retrieved hub
descriptor.
This specifically avoids benign attempts to update the DeviceRemovable
mask for non-existing ports (should we get that far).
Fixes: dbe79bbe9dcb ("USB 3.0 Hub Changes")
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/usb/ch11.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/usb/ch11.h b/include/uapi/linux/usb/ch11.h index 331499d597fa..9ce10d4a0245 100644 --- a/include/uapi/linux/usb/ch11.h +++ b/include/uapi/linux/usb/ch11.h @@ -22,6 +22,9 @@ */ #define USB_MAXCHILDREN 31 +/* See USB 3.1 spec Table 10-5 */ +#define USB_SS_MAXPORTS 15 + /* * Hub request types */ |