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authorLiang He <windhl@126.com>2022-06-18 05:32:05 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-06-21 17:39:03 +0300
commit9d6d5303c39b8bc182475b22f45504106a07f086 (patch)
treec8b0b2a9d6d1621ec0b250127d8821f6c1f17a5e /drivers/usb/renesas_usbhs
parent40a959d7042bb7711e404ad2318b30e9f92c6b9b (diff)
downloadlinux-9d6d5303c39b8bc182475b22f45504106a07f086.tar.xz
usb: renesas: Fix refcount leak bug
In usbhs_rza1_hardware_init(), of_find_node_by_name() will return a node pointer with refcount incremented. We should use of_node_put() when it is not used anymore. Signed-off-by: Liang He <windhl@126.com> Link: https://lore.kernel.org/r/20220618023205.4056548-1-windhl@126.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/renesas_usbhs')
-rw-r--r--drivers/usb/renesas_usbhs/rza.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/renesas_usbhs/rza.c b/drivers/usb/renesas_usbhs/rza.c
index 24de64edb674..2d77edefb4b3 100644
--- a/drivers/usb/renesas_usbhs/rza.c
+++ b/drivers/usb/renesas_usbhs/rza.c
@@ -23,6 +23,10 @@ static int usbhs_rza1_hardware_init(struct platform_device *pdev)
extal_clk = of_find_node_by_name(NULL, "extal");
of_property_read_u32(usb_x1_clk, "clock-frequency", &freq_usb);
of_property_read_u32(extal_clk, "clock-frequency", &freq_extal);
+
+ of_node_put(usb_x1_clk);
+ of_node_put(extal_clk);
+
if (freq_usb == 0) {
if (freq_extal == 12000000) {
/* Select 12MHz XTAL */