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authorJulius Werner <jwerner@chromium.org>2013-04-15 15:55:04 -0700
committerSarah Sharp <sarah.a.sharp@linux.intel.com>2013-06-05 16:41:47 -0700
commit01c5f4477d527732ecaf92d9b3d2201c8030000b (patch)
tree408de03b6f45f1127290b49bb416bbb2dc35b5e7 /drivers/usb/host/xhci.h
parent0c967e7ecdc2cf42853b4c76f0b2e94ba53c5b92 (diff)
downloadop-kernel-dev-01c5f4477d527732ecaf92d9b3d2201c8030000b.zip
op-kernel-dev-01c5f4477d527732ecaf92d9b3d2201c8030000b.tar.gz
usb: xhci-dbg: Display endpoint number and direction in context dump
When CONFIG_XHCI_HCD_DEBUGGING is activated, the XHCI driver can dump device and input contexts to the console. The endpoint contexts in that dump are labeled "Endpoint N Context", where N is the XHCI endpoint index (DCI - 1). This can be very confusing, especially for people who are not that familiar with the XHCI specification. This patch introduces an xhci_get_endpoint_address function (as a counterpart to the reverse xhci_get_endpoint_index), and uses it to additionally display the endpoint number and direction when dumping contexts, which are much more commonly used concepts in USB. Signed-off-by: Julius Werner <jwerner@chromium.org> Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Diffstat (limited to 'drivers/usb/host/xhci.h')
-rw-r--r--drivers/usb/host/xhci.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 29c978e..3ee79d6 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1641,6 +1641,7 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
void xhci_copy_ep0_dequeue_into_input_ctx(struct xhci_hcd *xhci,
struct usb_device *udev);
unsigned int xhci_get_endpoint_index(struct usb_endpoint_descriptor *desc);
+unsigned int xhci_get_endpoint_address(unsigned int ep_index);
unsigned int xhci_get_endpoint_flag(struct usb_endpoint_descriptor *desc);
unsigned int xhci_get_endpoint_flag_from_index(unsigned int ep_index);
unsigned int xhci_last_valid_endpoint(u32 added_ctxs);
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