diff options
| author | Raul E Rangel <rrangel@chromium.org> | 2018-07-17 13:27:44 -0600 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2018-07-17 20:38:46 +0000 |
| commit | 1b43ad7149ebae684b0cbd08d293117a7304249d (patch) | |
| tree | 2fb0f96517574349ba9e13a37353ec9f976e87f0 /payloads/libpayload/drivers/usb | |
| parent | 5fed693a52ed9746900ce58ec12a2b245f08202e (diff) | |
| download | coreboot-1b43ad7149ebae684b0cbd08d293117a7304249d.tar.xz | |
libpayload/generic_hub: Detect port disconnect after reset
If a port disconnects after a reset we should abort any initialization
on the port. This might mean the device has re-enumerated as a 3.0 device
so the hub should be scanned again.
BUG=b:76831439
TEST=Verified USB-C devices that get detected correctly in depthcharge.
Change-Id: Iad899544684312df1bef08d69b5c7f41eac3a21c
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-on: https://review.coreboot.org/27477
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Diffstat (limited to 'payloads/libpayload/drivers/usb')
| -rw-r--r-- | payloads/libpayload/drivers/usb/generic_hub.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/payloads/libpayload/drivers/usb/generic_hub.c b/payloads/libpayload/drivers/usb/generic_hub.c index 9f8670597e..9d444ee792 100644 --- a/payloads/libpayload/drivers/usb/generic_hub.c +++ b/payloads/libpayload/drivers/usb/generic_hub.c @@ -157,6 +157,15 @@ generic_hub_attach_dev(usbdev_t *const dev, const int port) if (hub->ops->reset_port) { if (hub->ops->reset_port(dev, port) < 0) return -1; + + if (!hub->ops->port_connected(dev, port)) { + usb_debug( + "generic_hub: Port %d disconnected after " + "reset. Possibly upgraded, rescan required.\n", + port); + return 0; + } + /* after reset the port will be enabled automatically */ const int ret = generic_hub_wait_for_port( /* time out after 1,000 * 10us = 10ms */ |