diff options
| author | Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-04-07 16:56:56 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-04-08 12:17:41 +0200 |
| commit | 52407729fbeabb654d38c0c99661a41a481092d1 (patch) | |
| tree | cd93814b36953114aee37171fff1b9b4d04374f7 | |
| parent | usb: host: xhci: print device slot from URB tracers (diff) | |
| download | linux-52407729fbeabb654d38c0c99661a41a481092d1.tar.xz linux-52407729fbeabb654d38c0c99661a41a481092d1.zip | |
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>
| -rw-r--r-- | drivers/usb/host/xhci-dbg.c | 14 | ||||
| -rw-r--r-- | drivers/usb/host/xhci.h | 16 |
2 files changed, 18 insertions, 12 deletions
diff --git a/drivers/usb/host/xhci-dbg.c b/drivers/usb/host/xhci-dbg.c index 2b4a00fa735d..4cfdd51340d4 100644 --- a/drivers/usb/host/xhci-dbg.c +++ b/drivers/usb/host/xhci-dbg.c @@ -451,19 +451,9 @@ char *xhci_get_slot_state(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx) { struct xhci_slot_ctx *slot_ctx = xhci_get_slot_ctx(xhci, ctx); + int state = GET_SLOT_STATE(le32_to_cpu(slot_ctx->dev_state)); - switch (GET_SLOT_STATE(le32_to_cpu(slot_ctx->dev_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"; - } + return xhci_slot_state_string(state); } static void xhci_dbg_slot_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx) 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) { |