usb bug fixes

This series contains two usb related bug fixes, one regarding the power cycling of hub ports, and the other- a memory leak in ehci-hcd.

Nikita Kiryanov (2):
usb_hub: fix power cycling logic
ehci-hcd: fix memory leak in lowlevel init

 common/usb_hub.c            | 4 ++--
 drivers/usb/host/ehci-hcd.c | 4 +++-
 2 files changed, 5 insertions(+), 3 deletions(-)

1.8.1.2

When power cycling the hub ports, a misbehaving port will prevent all ports from being powered on because we quit at the first sign of trouble.

Skip problematic ports instead of failing the entire power on.

---
 common/usb_hub.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

index 754d436..a11b401 100644
@@ -110,7 +110,7 @@ static void usb_hub_power_on(struct usb_hub_device *hub)
 		ret = usb_get_port_status(dev, i + 1, portsts);
 		if (ret < 0) {
 			debug("port %d: get_port_status failed\n", i + 1);
-			return;
+			continue;
 		}
 
 		/*

@@ -125,7 +125,7 @@ static void usb_hub_power_on(struct usb_hub_device *hub)
 		portstatus = le16_to_cpu(portsts->wPortStatus);
 		if (portstatus & (USB_PORT_STAT_POWER << 1)) {
 			debug("port %d: Port power change failed\n", i + 1);
-			return;
+			continue;
 		}
 	}
 

1.8.1.2

usb_lowlevel_init() allocates a new periodic_list each time it is invoked, without freeing the original list. Since it is initialized later on in the code, just reuse the first-allocated list in future invocations of usb_lowlevel_init.

---
 drivers/usb/host/ehci-hcd.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

index 706cf0c..eab1046 100644
@@ -954,7 +954,9 @@ int usb_lowlevel_init(int index, void **controller)
 	 *         Split Transactions will be spread across microframes using
 	 *         S-mask and C-mask.
 	 */
-	ehcic[index].periodic_list = memalign(4096, 1024*4);
+	if (ehcic[index].periodic_list == NULL)
+		ehcic[index].periodic_list = memalign(4096, 1024 * 4);
+
 	if (!ehcic[index].periodic_list)
 		return -ENOMEM;
 	for (i = 0; i < 1024; i++) {

1.8.1.2

Dear Nikita Kiryanov,

Applied both, thanks!

Best regards,
Marek Vasut