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@vger.kernel.org Signed-off-by: Haoxiang Li haoxiang_li2024@163.com --- drivers/usb/renesas_usbhs/pipe.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/usb/renesas_usbhs/pipe.c b/drivers/usb/renesas_usbhs/pipe.c index 75fff2e4cbc6..56fc3ff5016f 100644 --- a/drivers/usb/renesas_usbhs/pipe.c +++ b/drivers/usb/renesas_usbhs/pipe.c @@ -713,11 +713,13 @@ struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv, /* 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; }