misc: k3_avs: Fix possible NULL pointer deference

Its possible that k3_avs_priv is NULL because the driver may not have
been probed yet. Therefore check if pointer is valid before
dereferencing it.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

diff --git a/drivers/misc/k3_avs.c b/drivers/misc/k3_avs.c
index 47e42738e04764a093e5344c471f5ccafb01be74..90df377250511166cc5c03f3f5c86dd339c4cb88 100644 (file)
--- a/drivers/misc/k3_avs.c
+++ b/drivers/misc/k3_avs.c
@@ -191,6 +191,10 @@ int k3_avs_notify_freq(int dev_id, int clk_id, u32 freq)
        struct k3_avs_privdata *priv = k3_avs_priv;
        struct vd_data *vd;
 
+       /* Driver may not be probed yet */
+       if (!priv)
+               return -EINVAL;
+
        for (vd = priv->vd_config->vds; vd->id >= 0; vd++) {
                if (vd->dev_id != dev_id || vd->clk_id != clk_id)
                        continue;