diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/usb-uclass.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/usb/host/usb-uclass.c b/drivers/usb/host/usb-uclass.c index bc44fc3394..8a9f810bf8 100644 --- a/drivers/usb/host/usb-uclass.c +++ b/drivers/usb/host/usb-uclass.c @@ -164,6 +164,7 @@ int usb_get_max_xfer_size(struct usb_device *udev, size_t *size) int usb_stop(void) { struct udevice *bus; + struct udevice *rh; struct uclass *uc; struct usb_uclass_priv *uc_priv; int err = 0, ret; @@ -179,6 +180,18 @@ int usb_stop(void) ret = device_remove(bus, DM_REMOVE_NORMAL); if (ret && !err) err = ret; + + /* Locate root hub device */ + device_find_first_child(bus, &rh); + if (rh) { + /* + * All USB devices are children of root hub. + * Unbinding root hub will unbind all of its children. + */ + ret = device_unbind(rh); + if (ret && !err) + err = ret; + } } #ifdef CONFIG_BLK ret = blk_unbind_all(IF_TYPE_USB); @@ -262,6 +275,21 @@ int usb_init(void) /* init low_level USB */ printf("USB%d: ", count); count++; + +#ifdef CONFIG_SANDBOX + /* + * For Sandbox, we need scan the device tree each time when we + * start the USB stack, in order to re-create the emulated USB + * devices and bind drivers for them before we actually do the + * driver probe. + */ + ret = dm_scan_fdt_dev(bus); + if (ret) { + printf("Sandbox USB device scan failed (%d)\n", ret); + continue; + } +#endif + ret = device_probe(bus); if (ret == -ENODEV) { /* No such device. */ puts("Port not available.\n"); |