ENGR00309297-1 ASoC: imx-cs42888: Error out if failed to get p2p params

There's a possiblity that ASRC P2P would error out during its probe() due to
missing some DT bindings for example. If that happens, this asrc_p2p would
be a NULL pointer and accessing it would cause Kernel Panic.

Thus this patch adds an error out here to keep it safe.

Acked-by: Wang Shengjiu <b02247@freescale.com>
Signed-off-by: Nicolin Chen <Guangyu.Chen@freescale.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/sound/soc/fsl/imx-cs42888.c b/sound/soc/fsl/imx-cs42888.c
index db9f58d89868..a56f4f1984ed 100644
--- a/sound/soc/fsl/imx-cs42888.c
+++ b/sound/soc/fsl/imx-cs42888.c
@@ -247,6 +247,11 @@ static int imx_cs42888_probe(struct platform_device *pdev)
                 if (asrc_pdev) {
                         struct fsl_asrc_p2p *asrc_p2p;
                         asrc_p2p = platform_get_drvdata(asrc_pdev);
+                        if (!asrc_p2p) {
+                                dev_err(&pdev->dev, "failed to get p2p params\n");
+                                ret = -EINVAL;
+                                goto fail;
+                        }
                         asrc_p2p->per_dev = ESAI;
                         priv->fe_p2p_rate = asrc_p2p->p2p_rate;
                         priv->fe_p2p_width = asrc_p2p->p2p_width;