[U-Boot] [PATCH 2/2] ehci-hcd: fix memory leak in lowlevel init

[Nikita Kiryanov]

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.

Cc: Marek Vasut <marex at denx.de>
Cc: Igor Grinberg <grinberg at compulab.co.il>
Signed-off-by: Nikita Kiryanov <nikita at compulab.co.il>
---
 drivers/usb/host/ehci-hcd.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 706cf0c..eab1046 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -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