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Commit 52407729 authored by Felipe Balbi's avatar Felipe Balbi Committed by Greg Kroah-Hartman
Browse files

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: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: default avatarMathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent eaa9eb71

drivers/usb/host/xhci-dbg.c

+2 −12
Original line number Diff line number Diff line
@@ -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)

drivers/usb/host/xhci.h

+16 −0
Original line number Diff line number Diff line
@@ -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)

{