Document if or why sometimes digits/spec_digits is 0.

src/hardware/atten-pps3xxx/protocol.c

@@ -47,6 +47,7 @@ static void handle_packet(const struct sr_dev_inst *sdi)
 	devc = sdi->priv;
 	dump_packet("received", devc->packet);
 
+	/* Note: digits/spec_digits will be overridden later. */
 	sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
 
 	packet.type = SR_DF_ANALOG;

src/hardware/brymen-bm86x/protocol.c

@@ -218,6 +218,7 @@ static void brymen_bm86x_handle_packet(const struct sr_dev_inst *sdi,
 
 	devc = sdi->priv;
 
+	/* Note: digits/spec_digits will be overridden later. */
 	sr_analog_init(&analog[0], &encoding[0], &meaning[0], &spec[0], 0);
 	sr_analog_init(&analog[1], &encoding[1], &meaning[1], &spec[1], 0);
 

src/hardware/center-3xx/protocol.c

@@ -139,6 +139,7 @@ static int handle_packet(const uint8_t *buf, struct sr_dev_inst *sdi, int idx)
 
 	devc = sdi->priv;
 
+	/* Note: digits/spec_digits will be overridden later. */
 	sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
 	memset(&info, 0, sizeof(struct center_info));
 

src/hardware/kern-scale/protocol.c

@@ -43,6 +43,7 @@ static void handle_packet(const uint8_t *buf, struct sr_dev_inst *sdi,
 
 	devc = sdi->priv;
 
+	/* Note: digits/spec_digits will be overridden later. */
 	sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
 
 	analog.meaning->channels = sdi->channels;

src/hardware/korad-kaxxxxp/protocol.c

@@ -348,6 +348,7 @@ SR_PRIV int korad_kaxxxxp_receive_data(int fd, int revents, void *cb_data)
 		/* Get the value. */
 		korad_kaxxxxp_get_reply(serial, devc);
 
+		/* Note: digits/spec_digits will be overridden later. */
 		sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
 
 		/* Send the value forward. */

src/hardware/lascar-el-usb/protocol.c

@@ -398,6 +398,7 @@ static void lascar_el_usb_dispatch(struct sr_dev_inst *sdi, unsigned char *buf,
 
 	devc = sdi->priv;
 
+	/* Note: digits/spec_digits will be overridden later. */
 	sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
 
 	samples = buflen / devc->sample_size;

src/hardware/motech-lps-30x/protocol.c

@@ -44,6 +44,7 @@ static void send_data(struct sr_dev_inst *sdi)
 	packet.type = SR_DF_ANALOG;
 	packet.payload = &analog;
 
+	/* Note: digits/spec_digits will be overridden later. */
 	sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
 
 	analog.meaning->channels = sdi->channels;

src/hardware/scpi-pps/protocol.c

@@ -87,6 +87,7 @@ SR_PRIV int scpi_pps_receive_data(int fd, int revents, void *cb_data)
 		ch_spec = &devc->device->channels[pch->hw_output_idx];
 		packet.type = SR_DF_ANALOG;
 		packet.payload = &analog;
+		/* Note: digits/spec_digits will be overridden later. */
 		sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
 		analog.meaning->channels = g_slist_append(NULL, devc->cur_channel);
 		analog.num_samples = 1;

src/hardware/serial-dmm/protocol.c

@@ -55,6 +55,7 @@ static void handle_packet(const uint8_t *buf, struct sr_dev_inst *sdi,
 	log_dmm_packet(buf);
 	devc = sdi->priv;
 
+	/* Note: digits/spec_digits will be overridden by the DMM parsers. */
 	sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
 
 	analog.meaning->channels = sdi->channels;

src/hardware/teleinfo/protocol.c

@@ -70,6 +70,7 @@ static void teleinfo_send_value(struct sr_dev_inst *sdi, const char *channel_nam
 	if (!ch || !ch->enabled)
 		return;
 
+	/* Note: digits/spec_digits is actually really 0 for this device! */
 	sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
 	analog.meaning->channels = g_slist_append(analog.meaning->channels, ch);
 	analog.num_samples = 1;

src/hardware/uni-t-dmm/protocol.c

@@ -67,6 +67,7 @@ static void decode_packet(struct sr_dev_inst *sdi, const uint8_t *buf)
 
 	devc = sdi->priv;
 	dmm = (struct dmm_info *)sdi->driver;
+	/* Note: digits/spec_digits will be overridden by the DMM parsers. */
 	sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
 	info = g_malloc(dmm->info_size);
 

src/lcr/es51919.c

@@ -644,6 +644,7 @@ static void handle_packet(struct sr_dev_inst *sdi, const uint8_t *pkt)
 
 	frame = FALSE;
 
+	/* Note: digits/spec_digits will be overridden later. */
 	sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
 
 	analog.num_samples = 1;