6.6-stable review patch. If anyone has any objections, please let me know.
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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; }