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(parent: 7b05d3b) | patch
usb: ch9: Add size macro for SSP dev cap descriptor
authorJohn Youn <John.Youn@synopsys.com>
Sat, 6 Feb 2016 01:05:12 +0000 (17:05 -0800)
committerFelipe Balbi <balbi@kernel.org>
Fri, 4 Mar 2016 13:14:22 +0000 (15:14 +0200)
commit446fa3a95df1e8b78f25e1babc41e46edd200821
tree0e5d8aad4c5c142907309bd7fa827d5d65ba273ftree | snapshot (tar.gz zip)
parent7b05d3b37437f8d50a75545a0fd56ee585c58821commit | diff
usb: ch9: Add size macro for SSP dev cap descriptor

The SuperspeedPlus Device Capability Descriptor has a variable size
depending on the number of sublink speed attributes.

This patch adds a macro to calculate that size. The macro takes one
argument, the Sublink Speed Attribute Count (SSAC) as reported by the
descriptor in bmAttributes[4:0].

See USB 3.1 9.6.2.5, Table 9-19.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
include/uapi/linux/usb/ch9.h diff | blob | blame | history