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authorAlan Stern <stern@rowland.harvard.edu>2007-07-18 12:08:02 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2007-07-19 20:46:08 -0400
commit32aca5600526189dd876e6c92b64fd88cf052c8d (patch)
tree576e556090c39ae10c6a510c28ba3d2a75b12d5f /drivers/usb
parent82210d377468f59745303b96473e30e60b33434d (diff)
USB: move routines in hcd.c
This patch (as939) moves a couple of routine in hcd.c around. The purpose is to put all the general URB- and endpoint-related routines (submit, unlink, giveback, and disable) together in one spot. There are no functional changes. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/core/hcd.c82
1 files changed, 41 insertions, 41 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 963520fbef9..032b118c288 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1033,18 +1033,6 @@ done:
1033 1033
1034/*-------------------------------------------------------------------------*/ 1034/*-------------------------------------------------------------------------*/
1035 1035
1036/* called in any context */
1037int usb_hcd_get_frame_number (struct usb_device *udev)
1038{
1039 struct usb_hcd *hcd = bus_to_hcd(udev->bus);
1040
1041 if (!HC_IS_RUNNING (hcd->state))
1042 return -ESHUTDOWN;
1043 return hcd->driver->get_frame_number (hcd);
1044}
1045
1046/*-------------------------------------------------------------------------*/
1047
1048/* this makes the hcd giveback() the urb more quickly, by kicking it 1036/* this makes the hcd giveback() the urb more quickly, by kicking it
1049 * off hardware queues (which may take a while) and returning it as 1037 * off hardware queues (which may take a while) and returning it as
1050 * soon as practical. we've already set up the urb's return status, 1038 * soon as practical. we've already set up the urb's return status,
@@ -1167,6 +1155,35 @@ done:
1167 1155
1168/*-------------------------------------------------------------------------*/ 1156/*-------------------------------------------------------------------------*/
1169 1157
1158/**
1159 * usb_hcd_giveback_urb - return URB from HCD to device driver
1160 * @hcd: host controller returning the URB
1161 * @urb: urb being returned to the USB device driver.
1162 * Context: in_interrupt()
1163 *
1164 * This hands the URB from HCD to its USB device driver, using its
1165 * completion function. The HCD has freed all per-urb resources
1166 * (and is done using urb->hcpriv). It also released all HCD locks;
1167 * the device driver won't cause problems if it frees, modifies,
1168 * or resubmits this URB.
1169 */
1170void usb_hcd_giveback_urb (struct usb_hcd *hcd, struct urb *urb)
1171{
1172 urb_unlink(hcd, urb);
1173 usbmon_urb_complete (&hcd->self, urb);
1174 usb_unanchor_urb(urb);
1175
1176 /* pass ownership to the completion handler */
1177 urb->complete (urb);
1178 atomic_dec (&urb->use_count);
1179 if (unlikely (urb->reject))
1180 wake_up (&usb_kill_urb_queue);
1181 usb_put_urb (urb);
1182}
1183EXPORT_SYMBOL (usb_hcd_giveback_urb);
1184
1185/*-------------------------------------------------------------------------*/
1186
1170/* disables the endpoint: cancels any pending urbs, then synchronizes with 1187/* disables the endpoint: cancels any pending urbs, then synchronizes with
1171 * the hcd to make sure all endpoint state is gone from hardware, and then 1188 * the hcd to make sure all endpoint state is gone from hardware, and then
1172 * waits until the endpoint's queue is completely drained. use for 1189 * waits until the endpoint's queue is completely drained. use for
@@ -1260,6 +1277,18 @@ rescan:
1260 1277
1261/*-------------------------------------------------------------------------*/ 1278/*-------------------------------------------------------------------------*/
1262 1279
1280/* called in any context */
1281int usb_hcd_get_frame_number (struct usb_device *udev)
1282{
1283 struct usb_hcd *hcd = bus_to_hcd(udev->bus);
1284
1285 if (!HC_IS_RUNNING (hcd->state))
1286 return -ESHUTDOWN;
1287 return hcd->driver->get_frame_number (hcd);
1288}
1289
1290/*-------------------------------------------------------------------------*/
1291
1263#ifdef CONFIG_PM 1292#ifdef CONFIG_PM
1264 1293
1265int hcd_bus_suspend(struct usb_device *rhdev) 1294int hcd_bus_suspend(struct usb_device *rhdev)
@@ -1395,35 +1424,6 @@ EXPORT_SYMBOL (usb_bus_start_enum);
1395/*-------------------------------------------------------------------------*/ 1424/*-------------------------------------------------------------------------*/
1396 1425
1397/** 1426/**
1398 * usb_hcd_giveback_urb - return URB from HCD to device driver
1399 * @hcd: host controller returning the URB
1400 * @urb: urb being returned to the USB device driver.
1401 * Context: in_interrupt()
1402 *
1403 * This hands the URB from HCD to its USB device driver, using its
1404 * completion function. The HCD has freed all per-urb resources
1405 * (and is done using urb->hcpriv). It also released all HCD locks;
1406 * the device driver won't cause problems if it frees, modifies,
1407 * or resubmits this URB.
1408 */
1409void usb_hcd_giveback_urb (struct usb_hcd *hcd, struct urb *urb)
1410{
1411 urb_unlink(hcd, urb);
1412 usbmon_urb_complete (&hcd->self, urb);
1413 usb_unanchor_urb(urb);
1414
1415 /* pass ownership to the completion handler */
1416 urb->complete (urb);
1417 atomic_dec (&urb->use_count);
1418 if (unlikely (urb->reject))
1419 wake_up (&usb_kill_urb_queue);
1420 usb_put_urb (urb);
1421}
1422EXPORT_SYMBOL (usb_hcd_giveback_urb);
1423
1424/*-------------------------------------------------------------------------*/
1425
1426/**
1427 * usb_hcd_irq - hook IRQs to HCD framework (bus glue) 1427 * usb_hcd_irq - hook IRQs to HCD framework (bus glue)
1428 * @irq: the IRQ being raised 1428 * @irq: the IRQ being raised
1429 * @__hcd: pointer to the HCD whose IRQ is being signaled 1429 * @__hcd: pointer to the HCD whose IRQ is being signaled