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usb: hub: Clear BH reset status change for a 3.0 hub

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USB 3.0 hubs report bit[5] in the port status change response as BH
reset. The hub shall set the C_BH_PORT_RESET field for this port.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Bin Meng
2017-09-18 06:40:46 -07:00
committed by Marek Vasut
parent b90203526f
commit 061895fbe5
1 changed files with 6 additions and 0 deletions
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6
common/usb_hub.c
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@@ -494,6 +494,12 @@ static int usb_scan_port(struct usb_device_scan *usb_scan)
usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_RESET); usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_RESET);
} }
if ((portchange & USB_SS_PORT_STAT_C_BH_RESET) &&
usb_hub_is_superspeed(dev)) {
debug("port %d BH reset change\n", i + 1);
usb_clear_port_feature(dev, i + 1, USB_SS_PORT_FEAT_C_BH_RESET);
}
/* A new USB device is ready at this point */ /* A new USB device is ready at this point */
debug("devnum=%d port=%d: USB dev found\n", dev->devnum, i + 1); debug("devnum=%d port=%d: USB dev found\n", dev->devnum, i + 1);