From: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Date: Wed, 22 Nov 2017 16:15:17 +0000 (+0100)
Subject: usb: hub: identify the hub-device to usb_hub_reset_devices
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=883946e8e7c5dacb5e12f18703e20d49a4886f0e;p=u-boot.git

usb: hub: identify the hub-device to usb_hub_reset_devices

When usb_hub_reset_devices is called, it should be passed both an
indicator which hub it should operate on and what port number (local
to that hub) should be reset.

Previously, the usb_hub.c code did not include such context and
always started resets from port number 1, performing multiple
reset-requests for the same devices:

       /*
        * 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);

This adds an additional 'hub' parameter to usb_hub_reset_devices
that provides the context to fully qualify the port-number in.

Existing implementations are changed to accept and ignore the new
parameter.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Tested-by: Jakob Unterwurzacher <jakob.unterwurzacher@theobroma-systems.com>
---

diff --git a/board/compulab/cm_t54/cm_t54.c b/board/compulab/cm_t54/cm_t54.c
index 31730a4d1c..3e6235a3b7 100644
--- a/board/compulab/cm_t54/cm_t54.c
+++ b/board/compulab/cm_t54/cm_t54.c
@@ -246,7 +246,7 @@ int ehci_hcd_stop(void)
 	return ret;
 }
 
-void usb_hub_reset_devices(int port)
+void usb_hub_reset_devices(struct usb_hub_device *hub, int port)
 {
 	/* The LAN9730 needs to be reset after the port power has been set. */
 	if (port == 3) {
diff --git a/board/ti/omap5_uevm/evm.c b/board/ti/omap5_uevm/evm.c
index 4b25cc2d7c..67242f5cc8 100644
--- a/board/ti/omap5_uevm/evm.c
+++ b/board/ti/omap5_uevm/evm.c
@@ -249,7 +249,7 @@ int ehci_hcd_stop(void)
 	return omap_ehci_hcd_stop();
 }
 
-void usb_hub_reset_devices(int port)
+void usb_hub_reset_devices(struct usb_hub_device *hub, int port)
 {
 	/* The LAN9730 needs to be reset after the port power has been set. */
 	if (port == 3) {
diff --git a/common/usb_hub.c b/common/usb_hub.c
index 325d16dfc8..024dadb277 100644
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -57,7 +57,7 @@ struct usb_device_scan {
 
 static LIST_HEAD(usb_scan_list);
 
-__weak void usb_hub_reset_devices(int port)
+__weak void usb_hub_reset_devices(struct usb_hub_device *hub, int port)
 {
 	return;
 }
@@ -853,7 +853,7 @@ static int usb_hub_configure(struct usb_device *dev)
 	 * should occur in the board file of the device.
 	 */
 	for (i = 0; i < dev->maxchild; i++)
-		usb_hub_reset_devices(i + 1);
+		usb_hub_reset_devices(hub, i + 1);
 
 	/*
 	 * Only add the connected USB devices, including potential hubs,