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dreamsourcelab-dslogic: avoid NULL pointer dereference 

Check pointers' validity before dereferencing them.

This was reported by clang's scan-build.
This commit is contained in:
Gerhard Sittig 2018-02-08 23:11:59 +01:00 committed by Uwe Hermann
parent 755eb22156
commit 8e2fd23acb
1 changed files with 4 additions and 0 deletions
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4
src/hardware/dreamsourcelab-dslogic/api.c
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@ -514,12 +514,16 @@ static int config_list(uint32_t key, GVariant **data,
case SR_CONF_DEVICE_OPTIONS:
return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
case SR_CONF_VOLTAGE_THRESHOLD:
if (!devc || !devc->profile)
return SR_ERR_ARG;
if (!strcmp(devc->profile->model, "DSLogic"))
*data = std_gvar_thresholds(ARRAY_AND_SIZE(thresholds));
else
*data = std_gvar_min_max_step_thresholds(0.0, 5.0, 0.1);
break;
case SR_CONF_SAMPLERATE:
if (!devc)
return SR_ERR_ARG;
*data = std_gvar_samplerates(devc->samplerates, devc->num_samplerates);
break;
case SR_CONF_TRIGGER_MATCH: