firmware: imx: Save channel name for further use

We want to request / free channels on demand later in order
to save power.

For this for each channel we save the name and use it to
reference the channel later.

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Paul Olaru <paul.olaru@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/drivers/firmware/imx/imx-dsp.c b/drivers/firmware/imx/imx-dsp.c
index a3a018c..b6e95d6 100644 (file)
--- a/drivers/firmware/imx/imx-dsp.c
+++ b/drivers/firmware/imx/imx-dsp.c
@@ -79,6 +79,7 @@ static int imx_dsp_setup_channels(struct imx_dsp_ipc *dsp_ipc)
                        return -ENOMEM;
 
                dsp_chan = &dsp_ipc->chans[i];
+               dsp_chan->name = chan_name;
                cl = &dsp_chan->cl;
                cl->dev = dev;
                cl->tx_block = false;
@@ -97,16 +98,14 @@ static int imx_dsp_setup_channels(struct imx_dsp_ipc *dsp_ipc)
                }
 
                dev_dbg(dev, "request mbox chan %s\n", chan_name);
-               /* chan_name is not used anymore by framework */
-               kfree(chan_name);
        }
 
        return 0;
 out:
-       kfree(chan_name);
        for (j = 0; j < i; j++) {
                dsp_chan = &dsp_ipc->chans[j];
                mbox_free_channel(dsp_chan->ch);
+               kfree(dsp_chan->name);
        }
 
        return ret;
@@ -147,6 +146,7 @@ static int imx_dsp_remove(struct platform_device *pdev)
        for (i = 0; i < DSP_MU_CHAN_NUM; i++) {
                dsp_chan = &dsp_ipc->chans[i];
                mbox_free_channel(dsp_chan->ch);
+               kfree(dsp_chan->name);
        }
 
        return 0;