From 3615a996ab91b5cdf8d89359150aff3d754db8d8 Mon Sep 17 00:00:00 2001 From: Dan Murphy Date: Thu, 1 Aug 2013 14:06:01 -0500 Subject: [PATCH] USB: usb-hub: Add a weak function for resetting devices Add a __weak function that can be overridden to reset devices attached to an ehci devices after the FEAT_POWER has been submitted Signed-off-by: Dan Murphy --- common/usb_hub.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/common/usb_hub.c b/common/usb_hub.c index a11b401e62..fd2b4ed4f4 100644 --- a/common/usb_hub.c +++ b/common/usb_hub.c @@ -44,6 +44,10 @@ static struct usb_hub_device hub_dev[USB_MAX_HUB]; static int usb_hub_index; +__weak void usb_hub_reset_devices(int port) +{ + return; +} static int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size) { @@ -426,6 +430,14 @@ static int usb_hub_configure(struct usb_device *dev) "" : "no "); usb_hub_power_on(hub); + /* + * Reset any devices that may be in a bad state when applying + * the power. This is a __weak function. Resetting of the devices + * should occur in the board file of the device. + */ + for (i = 0; i < dev->maxchild; i++) + usb_hub_reset_devices(i + 1); + for (i = 0; i < dev->maxchild; i++) { ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1); unsigned short portstatus, portchange; -- 2.30.2