[adm5120] integrate 2.6.28 specific patch into the usb driver

[openwrt-10.03/.git] / target / linux / adm5120 / files / drivers / usb / host / adm5120-hcd.c

diff --git a/target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c b/target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c
index 725583cc832604d5a6ad2d04b0cb10421a4c0595..30310aa0c1a32dae36669a039c8549c603bb0ce9 100644 (file)
--- a/target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c
+++ b/target/linux/adm5120/files/drivers/usb/host/adm5120-hcd.c
@@ -1,7 +1,7 @@
 /*
  * ADM5120 HCD (Host Controller Driver) for USB
  *
- * Copyright (C) 2007,2008 Gabor Juhos <juhosg at openwrt.org>
+ * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
  *
  * This file was derived from: drivers/usb/host/ohci-hcd.c
  *   (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
@@ -35,6 +35,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/dmapool.h>
 #include <linux/reboot.h>
+#include <linux/debugfs.h>
 
 #include <asm/io.h>
 #include <asm/irq.h>
@@ -45,8 +46,8 @@
 #include "../core/hcd.h"
 #include "../core/hub.h"
 
-#define DRIVER_VERSION "0.16.1"
-#define DRIVER_AUTHOR  "Gabor Juhos <juhosg at openwrt.org>"
+#define DRIVER_VERSION "0.27.0"
+#define DRIVER_AUTHOR  "Gabor Juhos <juhosg@openwrt.org>"
 #define DRIVER_DESC    "ADMtek USB 1.1 Host Controller Driver"
 
 /*-------------------------------------------------------------------------*/
@@ -83,8 +84,8 @@ static void admhc_stop(struct usb_hcd *hcd);
 /*
  * queue up an urb for anything except the root hub
  */
-static int admhc_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep,
-       struct urb *urb, gfp_t mem_flags)
+static int admhc_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
+               gfp_t mem_flags)
 {
        struct admhcd   *ahcd = hcd_to_admhcd(hcd);
        struct ed       *ed;
@@ -96,12 +97,12 @@ static int admhc_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep,
 
 #ifdef ADMHC_VERBOSE_DEBUG
        spin_lock_irqsave(&ahcd->lock, flags);
-       urb_print(ahcd, urb, "ENQEUE", usb_pipein(pipe));
+       urb_print(ahcd, urb, "ENQEUE", usb_pipein(pipe), -EINPROGRESS);
        spin_unlock_irqrestore(&ahcd->lock, flags);
 #endif
 
        /* every endpoint has an ed, locate and maybe (re)initialize it */
-       ed = ed_get(ahcd, ep, urb->dev, pipe, urb->interval);
+       ed = ed_get(ahcd, urb->ep, urb->dev, pipe, urb->interval);
        if (!ed)
                return -ENOMEM;
 
@@ -161,22 +162,17 @@ static int admhc_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep,
                goto fail;
        }
 
-       /* in case of unlink-during-submit */
-       spin_lock(&urb->lock);
-       if (urb->status != -EINPROGRESS) {
-               spin_unlock(&urb->lock);
-               urb->hcpriv = urb_priv;
-               finish_urb(ahcd, urb);
-               ret = 0;
+       ret = usb_hcd_link_urb_to_ep(hcd, urb);
+       if (ret)
                goto fail;
-       }
 
        /* schedule the ed if needed */
        if (ed->state == ED_IDLE) {
                ret = ed_schedule(ahcd, ed);
-               if (ret < 0)
-                       goto fail0;
-
+               if (ret < 0) {
+                       usb_hcd_unlink_urb_from_ep(hcd, urb);
+                       goto fail;
+               }
                if (ed->type == PIPE_ISOCHRONOUS) {
                        u16     frame = admhc_frame_no(ahcd);
 
@@ -204,8 +200,6 @@ static int admhc_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *ep,
        admhc_dump_ed(ahcd, "admhc_urb_enqueue", urb_priv->ed, 1);
 #endif
 
-fail0:
-       spin_unlock(&urb->lock);
 fail:
        if (ret)
                urb_priv_free(ahcd, urb_priv);
@@ -215,23 +209,28 @@ fail:
 }
 
 /*
- * decouple the URB from the HC queues (TDs, urb_priv); it's
- * already marked using urb->status.  reporting is always done
+ * decouple the URB from the HC queues (TDs, urb_priv);
+ * reporting is always done
  * asynchronously, and we might be dealing with an urb that's
  * partially transferred, or an ED with other urbs being unlinked.
  */
-static int admhc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
+static int admhc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
+               int status)
 {
        struct admhcd *ahcd = hcd_to_admhcd(hcd);
        unsigned long flags;
+       int ret;
 
        spin_lock_irqsave(&ahcd->lock, flags);
 
 #ifdef ADMHC_VERBOSE_DEBUG
-       urb_print(ahcd, urb, "DEQUEUE", 1);
+       urb_print(ahcd, urb, "DEQUEUE", 1, status);
 #endif
-
-       if (HC_IS_RUNNING(hcd->state)) {
+       ret = usb_hcd_check_unlink_urb(hcd, urb, status);
+       if (ret) {
+               /* Do nothing */
+               ;
+       } else if (HC_IS_RUNNING(hcd->state)) {
                struct urb_priv *urb_priv;
 
                /* Unless an IRQ completed the unlink while it was being
@@ -249,11 +248,11 @@ static int admhc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
                 * any more ... just clean up every urb's memory.
                 */
                if (urb->hcpriv)
-                       finish_urb(ahcd, urb);
+                       finish_urb(ahcd, urb, status);
        }
        spin_unlock_irqrestore(&ahcd->lock, flags);
 
-       return 0;
+       return ret;
 }
 
 /*-------------------------------------------------------------------------*/
@@ -779,7 +778,7 @@ static void admhc_stop(struct usb_hcd *hcd)
 
 /*-------------------------------------------------------------------------*/
 
-#ifdef CONFIG_MIPS_ADM5120
+#ifdef CONFIG_ADM5120
 #include "adm5120-drv.c"
 #define PLATFORM_DRIVER                usb_hcd_adm5120_driver
 #endif
@@ -801,6 +800,14 @@ static int __init admhc_hcd_mod_init(void)
        pr_info("%s: block sizes: ed %Zd td %Zd\n", hcd_name,
                sizeof (struct ed), sizeof (struct td));
 
+#ifdef DEBUG
+       admhc_debug_root = debugfs_create_dir("admhc", NULL);
+       if (!admhc_debug_root) {
+               ret = -ENOENT;
+               goto error_debug;
+       }
+#endif
+
 #ifdef PLATFORM_DRIVER
        ret = platform_driver_register(&PLATFORM_DRIVER);
        if (ret < 0)
@@ -812,6 +819,12 @@ static int __init admhc_hcd_mod_init(void)
 #ifdef PLATFORM_DRIVER
        platform_driver_unregister(&PLATFORM_DRIVER);
 error_platform:
+#endif
+
+#ifdef DEBUG
+       debugfs_remove(admhc_debug_root);
+       admhc_debug_root = NULL;
+error_debug:
 #endif
        return ret;
 }
@@ -820,10 +833,13 @@ module_init(admhc_hcd_mod_init);
 static void __exit admhc_hcd_mod_exit(void)
 {
        platform_driver_unregister(&PLATFORM_DRIVER);
+#ifdef DEBUG
+       debugfs_remove(admhc_debug_root);
+#endif
 }
 module_exit(admhc_hcd_mod_exit);
 
 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_INFO);
 MODULE_VERSION(DRIVER_VERSION);
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");