[PATCH 6.12 190/567] usb: renesas_usbhs: Fix a resource leak in usbhs_pipe_malloc()

Greg Kroah-Hartman
2026-01-06T17:24:42Z

From: Haoxiang Li <haoxiang_li2024@163.com>

commit 36cc7e09df9e43db21b46519b740145410dd9f4a upstream.

usbhsp_get_pipe() set pipe's flags to IS_USED. In error paths,
usbhsp_put_pipe() is required to clear pipe's flags to prevent
pipe exhaustion.

Fixes: f1407d5c6624 ("usb: renesas_usbhs: Add Renesas USBHS common code")
Cc: stable <stable@kernel.org>
Signed-off-by: Haoxiang Li <haoxiang_li2024@163.com>
Link: https://patch.msgid.link/20251204132129.109234-1-haoxiang_li2024@163.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/renesas_usbhs/pipe.c | 2 ++
1 file changed, 2 insertions(+)

--- a/drivers/usb/renesas_usbhs/pipe.c
+++ b/drivers/usb/renesas_usbhs/pipe.c
@@ -713,11 +713,13 @@ struct usbhs_pipe *usbhs_pipe_malloc(str
/* make sure pipe is not busy */
ret = usbhsp_pipe_barrier(pipe);
if (ret < 0) {
+ usbhsp_put_pipe(pipe);
dev_err(dev, "pipe setup failed %d\n", usbhs_pipe_number(pipe));
return NULL;
}

if (usbhsp_setup_pipecfg(pipe, is_host, dir_in, &pipecfg)) {
+ usbhsp_put_pipe(pipe);
dev_err(dev, "can't setup pipe\n");
return NULL;
}