On 18.09.2017 15:40, Bin Meng wrote:
During usb_hub_port_connect_change(), a port reset set feature
request is issued to the port, and later a port reset clear feature
is done to the same port before the function returns. However at
the end of usb_scan_port(), we attempt to clear port reset again
on a cached port status change variable, which should not be done.
Adjust the call to clear port reset to right before the call to
usb_hub_port_connect_change().
Signed-off-by: Bin Meng <bmeng...@gmail.com>
---
common/usb_hub.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/common/usb_hub.c b/common/usb_hub.c
index 86a3477..a9d21bc 100644
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -489,6 +489,11 @@ static int usb_scan_port(struct usb_device_scan *usb_scan)
return 0;
}
+ if (portchange & USB_PORT_STAT_C_RESET) {
+ debug("port %d reset change\n", i + 1);
+ usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_RESET);
+ }
+
/* A new USB device is ready at this point */
debug("devnum=%d port=%d: USB dev found\n", dev->devnum, i + 1);
@@ -543,11 +548,6 @@ static int usb_scan_port(struct usb_device_scan *usb_scan)
hub->overcurrent_count[i]);
}
- if (portchange & USB_PORT_STAT_C_RESET) {
- debug("port %d reset change\n", i + 1);
- usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_RESET);
- }
-
/*
* We're done with this device, so let's remove this device from
* scanning list
Reviewed-by: Stefan Roese <s...@denx.de>
Tested-by: Stefan Roese <s...@denx.de>
Thanks,
Stefan
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