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    USB: xhci: Print NEC firmware version. · 0238634d
    Sarah Sharp 提交于
    The NEC xHCI host controller firmware version can be found by putting a
    vendor-specific command on the command ring and extracting the BCD
    encoded-version out of the vendor-specific event TRB.
    
    The firmware version debug line in dmesg will look like:
    
    xhci_hcd 0000:05:00.0: NEC firmware version 30.21
    
    (NEC merged with Renesas Technologies and became Renesas Electronics on
    April 1, 2010.  I have their OK to merge this vendor-specific code.)
    Signed-off-by: NSarah Sharp <sarah.a.sharp@linux.intel.com>
    Cc: Satoshi Otani <satoshi.otani.xm@renesas.com>
    Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
    0238634d
xhci.c 73.2 KB