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usb: Add USB 3.1 Precision time measurement capability descriptor support

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USB 3.1 devices that support precision time measurement have an
additional PTM cabaility descriptor as part of the full BOS descriptor

Look for this descriptor while parsing the BOS descriptor, and store it in
struct usb_hub_bos if it exists.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathias Nyman
2016-02-12 16:40:14 +02:00
committed by Greg Kroah-Hartman
parent b37d83a6a4
commit faee822c5a
3 changed files with 14 additions and 0 deletions
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include/linux/usb.h
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@@ -332,6 +332,7 @@ struct usb_host_bos {
struct usb_ss_cap_descriptor *ss_cap;
struct usb_ssp_cap_descriptor *ssp_cap;
struct usb_ss_container_id_descriptor *ss_id;
struct usb_ptm_cap_descriptor *ptm_cap;
};
int __usb_get_extra_descriptor(char *buffer, unsigned size,