drivers: return SR_ERR_NA on unsupported config key

[libsigrok.git] / libsigrok.h

diff --git a/libsigrok.h b/libsigrok.h
index 4212c59c4f046d77522b81a12b9a949568664123..294bb15d7d3ba0a5fd7827ddf89b9640dfaead1a 100644 (file)
--- a/libsigrok.h
+++ b/libsigrok.h
@@ -70,6 +70,7 @@ enum {
        SR_ERR_ARG        = -3, /**< Function argument error. */
        SR_ERR_BUG        = -4, /**< Errors hinting at internal bugs. */
        SR_ERR_SAMPLERATE = -5, /**< Incorrect samplerate. */
+       SR_ERR_NA         = -6, /**< Not applicable. */
 };
 
 #define SR_MAX_NUM_PROBES    64 /* Limited by uint64_t. */