usb: host: xhci: add Slot and EP Context tracers

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With these, we can track what's happening with the HW while executing
each and every command. It will give us visibility into how the
different contexts are being modified by xHC which can bring insight
into problems while debugging.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Felipe Balbi 2017-04-07 17:56:57 +03:00 • committed by Greg Kroah-Hartman

parent 52407729fb

commit 19a7d0d65c

4 changed files with 302 additions and 2 deletions

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42

drivers/usb/host/xhci-ring.c

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101

drivers/usb/host/xhci-trace.h

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15

drivers/usb/host/xhci.c

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146

drivers/usb/host/xhci.h

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