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| author | Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-04-07 17:56:56 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-04-08 13:17:41 +0300 |
| commit | 52407729fbeabb654d38c0c99661a41a481092d1 (patch) | |
| tree | cd93814b36953114aee37171fff1b9b4d04374f7 /drivers/usb/host/xhci.h | |
| parent | eaa9eb71a277149a2241b24f27aa09258745b4dd (diff) | |
| download | linux-52407729fbeabb654d38c0c99661a41a481092d1.tar.xz | |
usb: host: xhci: extract xhci_slot_state_string()
By extracting and exposing xhci_slot_state_string() in a header file, we
can re-use it to print Slot Context State from our tracepoints, which
can aid in tracking down problems related to command execution.
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>
Diffstat (limited to 'drivers/usb/host/xhci.h')
| -rw-r--r-- | drivers/usb/host/xhci.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 675d552e420e..44d031c87108 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -2158,6 +2158,22 @@ static inline struct xhci_ring *xhci_urb_to_transfer_ring(struct xhci_hcd *xhci, urb->stream_id); } +static inline char *xhci_slot_state_string(u32 state) +{ + switch (state) { + case SLOT_STATE_ENABLED: + return "enabled/disabled"; + case SLOT_STATE_DEFAULT: + return "default"; + case SLOT_STATE_ADDRESSED: + return "addressed"; + case SLOT_STATE_CONFIGURED: + return "configured"; + default: + return "reserved"; + } +} + static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2, u32 field3) { |