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| author | Minda Chen <minda.chen@starfivetech.com> | 2023-10-10 12:10:18 +0300 |
|---|---|---|
| committer | Minda Chen <minda.chen@starfivetech.com> | 2023-10-10 12:23:31 +0300 |
| commit | 25ce4e7598e5ed6bdc268b8444a0ea88000eeb1b (patch) | |
| tree | aa4f2b5a25be36e84a2835ea3d1fee99c5687f65 | |
| parent | 5a6195d02812c3fb8629276cea63a95ae79e8afa (diff) | |
| download | u-boot-25ce4e7598e5ed6bdc268b8444a0ea88000eeb1b.tar.xz | |
usb: hub: Do NOT add device if portchanged over current bit is set
USB hub should not add the usb devices if over current bit
is set in portchange. For later usb_scan_port will still return
with error and rescan and add device again.
it will generate dulplicated device and cause crash issue.
Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
| -rw-r--r-- | common/usb_hub.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/common/usb_hub.c b/common/usb_hub.c index ba11a188ca..d0f4b8c2a7 100644 --- a/common/usb_hub.c +++ b/common/usb_hub.c @@ -376,6 +376,9 @@ int usb_hub_port_connect_change(struct usb_device *dev, int port) return ret; } + if (le16_to_cpu(portsts->wPortChange) & USB_PORT_STAT_C_OVERCURRENT) + return -EIO; + switch (portstatus & USB_PORT_STAT_SPEED_MASK) { case USB_PORT_STAT_SUPER_SPEED: speed = USB_SPEED_SUPER; |