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cnss2: add null pointer check

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The return value of the function cnss_bus_dev_to_plat_priv() has a
chance to NULL, So we have to check "plat_priv" if it is a null
pointer before it is dereferenced.

Change-Id: I8a5bbe5037d1f15113e58bb16b90f243ea8ef807
Signed-off-by: Ke Huang <keh@codeaurora.org>
Signed-off-by: Kuichu Ni <kuichun@codeaurora.org>
This commit is contained in:
Ke Huang 2020-04-29 17:14:45 +08:00 • committed by Kuichu Ni
commit 215bb42517
1 changed files with 9 additions and 0 deletions
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9
drivers/net/wireless/cnss2/main.c
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@ -284,6 +284,9 @@ int cnss_wlan_enable(struct device *dev,
struct cnss_plat_data *plat_priv = cnss_bus_dev_to_plat_priv(dev);
int ret = 0;
if (!plat_priv)
return -ENODEV;
if (plat_priv->device_id == QCA6174_DEVICE_ID)
return 0;
@ -320,6 +323,9 @@ int cnss_wlan_disable(struct device *dev, enum cnss_driver_mode mode)
struct cnss_plat_data *plat_priv = cnss_bus_dev_to_plat_priv(dev);
int ret = 0;
if (!plat_priv)
return -ENODEV;
if (plat_priv->device_id == QCA6174_DEVICE_ID)
return 0;
@ -395,6 +401,9 @@ int cnss_set_fw_log_mode(struct device *dev, u8 fw_log_mode)
{
struct cnss_plat_data *plat_priv = cnss_bus_dev_to_plat_priv(dev);
if (!plat_priv)
return -ENODEV;
if (plat_priv->device_id == QCA6174_DEVICE_ID)
return 0;