Re: [PATCH] slimbus: messaging: Fix runtime PM leak in slim_do_transfer()

From: Srinivas Kandagatla

Date: Fri Sep 18 2026 - 02:36:42 EST




On 9/17/26 4:22 PM, Wentao Liang wrote:
> slim_do_transfer() takes a runtime PM reference with
> pm_runtime_get_sync() before allocating a transaction id. The
> slim_alloc_txn_tid() failure path returns directly, skipping the
> slim_xfer_err cleanup that drops this reference.
>
> Jump to slim_xfer_err so the reference is always released.
>
Same question as your other patch,

BTW, please check the list before sending duplicate patch, there is
already an identical patch on the list.

--srini
> Fixes: d3062a210930 ("slimbus: messaging: add slim_alloc/free_txn_tid()")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Wentao Liang <vulab@xxxxxxxxxxx>
> ---
> drivers/slimbus/messaging.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/slimbus/messaging.c b/drivers/slimbus/messaging.c
> index e2dbe4a66b70..ee127ef42046 100644
> --- a/drivers/slimbus/messaging.c
> +++ b/drivers/slimbus/messaging.c
> @@ -139,7 +139,7 @@ int slim_do_transfer(struct slim_controller *ctrl, struct slim_msg_txn *txn)
> if (need_tid) {
> ret = slim_alloc_txn_tid(ctrl, txn);
> if (ret)
> - return ret;
> + goto slim_xfer_err;
>
> if (!txn->msg->comp)
> txn->comp = &done;