From: Sudip Mukherjee sudipm.mukherjee@gmail.com
[ Upstream commit 7440f518dad9d861d76c64956641eeddd3586f75 ]
On error the function ti_bandgap_get_sensor_data() returns the error code in ERR_PTR() but we only checked if the return value is NULL or not. And, so we can dereference an error code inside ERR_PTR. While at it, convert a check to IS_ERR_OR_NULL.
Signed-off-by: Sudip Mukherjee sudipm.mukherjee@gmail.com Reviewed-by: Amit Kucheria amit.kucheria@linaro.org Signed-off-by: Daniel Lezcano daniel.lezcano@linaro.org Link: https://lore.kernel.org/r/20200424161944.6044-1-sudipm.mukherjee@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/thermal/ti-soc-thermal/ti-thermal-common.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/thermal/ti-soc-thermal/ti-thermal-common.c b/drivers/thermal/ti-soc-thermal/ti-thermal-common.c index b4f981daeaf2..452e034aedc1 100644 --- a/drivers/thermal/ti-soc-thermal/ti-thermal-common.c +++ b/drivers/thermal/ti-soc-thermal/ti-thermal-common.c @@ -183,7 +183,7 @@ int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id,
data = ti_bandgap_get_sensor_data(bgp, id);
- if (!data || IS_ERR(data)) + if (!IS_ERR_OR_NULL(data)) data = ti_thermal_build_data(bgp, id);
if (!data) @@ -210,7 +210,7 @@ int ti_thermal_remove_sensor(struct ti_bandgap *bgp, int id)
data = ti_bandgap_get_sensor_data(bgp, id);
- if (data && data->ti_thermal) { + if (!IS_ERR_OR_NULL(data) && data->ti_thermal) { if (data->our_zone) thermal_zone_device_unregister(data->ti_thermal); } @@ -276,7 +276,7 @@ int ti_thermal_unregister_cpu_cooling(struct ti_bandgap *bgp, int id)
data = ti_bandgap_get_sensor_data(bgp, id);
- if (data) { + if (!IS_ERR_OR_NULL(data)) { cpufreq_cooling_unregister(data->cool_dev); if (data->policy) cpufreq_cpu_put(data->policy);