configs: blackfin: move CONFIG_USB to defconfig

[people/ms/u-boot.git] / common / usb.c

diff --git a/common/usb.c b/common/usb.c
index 9f67cc1e8e8c7af62489b440f85151a9c841965d..8d9efe516b7571247b979f067b02962f0d6ad9d7 100644 (file)
--- a/common/usb.c
+++ b/common/usb.c
@@ -210,7 +210,7 @@ int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe,
  * clear keyboards LEDs). For data transfers, (storage transfers) we don't
  * allow control messages with 0 timeout, by previousely resetting the flag
  * asynch_allowed (usb_disable_asynch(1)).
- * returns the transfered length if OK or -1 if error. The transfered length
+ * returns the transferred length if OK or -1 if error. The transferred length
  * and the current status are stored in the dev->act_len and dev->status.
  */
 int usb_control_msg(struct usb_device *dev, unsigned int pipe,
@@ -456,7 +456,7 @@ static int usb_parse_config(struct usb_device *dev,
                        }
                        epno = dev->config.if_desc[ifno].no_of_ep;
                        if_desc = &dev->config.if_desc[ifno];
-                       if (epno > USB_MAXENDPOINTS) {
+                       if (epno >= USB_MAXENDPOINTS) {
                                printf("Interface %d has too many endpoints!\n",
                                        if_desc->desc.bInterfaceNumber);
                                return -EINVAL;
@@ -919,19 +919,8 @@ __weak int usb_alloc_device(struct usb_device *udev)
 
 static int usb_hub_port_reset(struct usb_device *dev, struct usb_device *hub)
 {
-       if (hub) {
-               unsigned short portstatus;
-               int err;
-
-               /* reset the port for the second time */
-               err = legacy_hub_port_reset(hub, dev->portnr - 1, &portstatus);
-               if (err < 0) {
-                       printf("\n     Couldn't reset port %i\n", dev->portnr);
-                       return err;
-               }
-       } else {
+       if (!hub)
                usb_reset_root_port(dev);
-       }
 
        return 0;
 }
@@ -1075,7 +1064,7 @@ static int usb_prepare_device(struct usb_device *dev, int addr, bool do_read,
 
 int usb_select_config(struct usb_device *dev)
 {
-       unsigned char *tmpbuf = 0;
+       unsigned char *tmpbuf = NULL;
        int err;
 
        err = get_descriptor_len(dev, USB_DT_DEVICE_SIZE, USB_DT_DEVICE_SIZE);
@@ -1088,6 +1077,14 @@ int usb_select_config(struct usb_device *dev)
        le16_to_cpus(&dev->descriptor.idProduct);
        le16_to_cpus(&dev->descriptor.bcdDevice);
 
+       /*
+        * Kingston DT Ultimate 32GB USB 3.0 seems to be extremely sensitive
+        * about this first Get Descriptor request. If there are any other
+        * requests in the first microframe, the stick crashes. Wait about
+        * one microframe duration here (1mS for USB 1.x , 125uS for USB 2.0).
+        */
+       mdelay(1);
+
        /* only support for one config for now */
        err = usb_get_configuration_len(dev, 0);
        if (err >= 0) {
@@ -1118,6 +1115,14 @@ int usb_select_config(struct usb_device *dev)
                        "len %d, status %lX\n", dev->act_len, dev->status);
                return err;
        }
+
+       /*
+        * Wait until the Set Configuration request gets processed by the
+        * device. This is required by at least SanDisk Cruzer Pop USB 2.0
+        * and Kingston DT Ultimate 32GB USB 3.0 on DWC2 OTG controller.
+        */
+       mdelay(10);
+
        debug("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n",
              dev->descriptor.iManufacturer, dev->descriptor.iProduct,
              dev->descriptor.iSerialNumber);