From 7a8d03f88efadcfe5963bc72a03fedc9a04f7f5a Mon Sep 17 00:00:00 2001 From: Vignesh Raghavendra 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 --- 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 47e42738e0..90df377250 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; -- 2.39.5