[PATCH] firmware: imx: dsp: fix mailbox channel leak on kasprintf failure

[Frank Li]

On Thu, Aug 13, 2026 at 05:58:18PM +0800, Linkai Gong wrote:
> [You don't often get email from gonglinkai at kylinos.cn. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ]
>
> If kasprintf() fails while setting up mailbox channels, already
> requested channels from earlier iterations were never freed. Route
> the failure through the existing cleanup path.
>
> Fixes: ffbf23d50353 ("firmware: imx: Add DSP IPC protocol interface")
> Signed-off-by: Linkai Gong <gonglinkai at kylinos.cn>
> ---

Reviewed-by: Frank Li <Frank.Li at nxp.com>

>  drivers/firmware/imx/imx-dsp.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> diff --git a/drivers/firmware/imx/imx-dsp.c b/drivers/firmware/imx/imx-dsp.c
> index ed79e823157a..7e3f45ddf0c1 100644
> --- a/drivers/firmware/imx/imx-dsp.c
> +++ b/drivers/firmware/imx/imx-dsp.c
> @@ -99,8 +99,10 @@ static int imx_dsp_setup_channels(struct imx_dsp_ipc *dsp_ipc)
>                 else
>                         chan_name = kasprintf(GFP_KERNEL, "rxdb%d", i - 2);
>
> -               if (!chan_name)
> -                       return -ENOMEM;
> +               if (!chan_name) {
> +                       ret = -ENOMEM;
> +                       goto out;
> +               }
>
>                 dsp_chan = &dsp_ipc->chans[i];
>                 dsp_chan->name = chan_name;
> --
> 2.25.1
>