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authorLiang He <windhl@126.com>2022-07-13 15:05:28 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-07-14 17:10:12 +0300
commit220fafb4ed04187e9c17be4152da5a7f2ffbdd8c (patch)
tree5a9016e3e92f6552200db9b13cc0e4a0267efd43 /drivers/usb/gadget/udc/aspeed-vhub
parentefa2bebf2a9fde638644d6fb0fb776345ac6fcc1 (diff)
downloadlinux-220fafb4ed04187e9c17be4152da5a7f2ffbdd8c.tar.xz
usb: aspeed-vhub: Fix refcount leak bug in ast_vhub_init_desc()
We should call of_node_put() for the reference returned by of_get_child_by_name() which has increased the refcount. Fixes: 30d2617fd7ed ("usb: gadget: aspeed: allow to set usb strings in device tree") Signed-off-by: Liang He <windhl@126.com> Link: https://lore.kernel.org/r/20220713120528.368168-1-windhl@126.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/gadget/udc/aspeed-vhub')
-rw-r--r--drivers/usb/gadget/udc/aspeed-vhub/hub.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/gadget/udc/aspeed-vhub/hub.c b/drivers/usb/gadget/udc/aspeed-vhub/hub.c
index 65cd4e46f031..e2207d014620 100644
--- a/drivers/usb/gadget/udc/aspeed-vhub/hub.c
+++ b/drivers/usb/gadget/udc/aspeed-vhub/hub.c
@@ -1059,8 +1059,10 @@ static int ast_vhub_init_desc(struct ast_vhub *vhub)
/* Initialize vhub String Descriptors. */
INIT_LIST_HEAD(&vhub->vhub_str_desc);
desc_np = of_get_child_by_name(vhub_np, "vhub-strings");
- if (desc_np)
+ if (desc_np) {
ret = ast_vhub_of_parse_str_desc(vhub, desc_np);
+ of_node_put(desc_np);
+ }
else
ret = ast_vhub_str_alloc_add(vhub, &ast_vhub_strings);