From 7a8d03f88efadcfe5963bc72a03fedc9a04f7f5a Mon Sep 17 00:00:00 2001
From: Vignesh Raghavendra <vigneshr@ti.com>
Date: Fri, 14 Feb 2020 17:52:17 +0530
Subject: [PATCH] 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>
---
drivers/misc/k3_avs.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/misc/k3_avs.c b/drivers/misc/k3_avs.c
index 47e42738e04..90df3772505 100644
--- 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;
--
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