std_init(): Drop check if pass in driver is non-NULL

std_init() checks if the pass in struct sr_dev_driver is non-NULL and
prints a error message and returns an error if it is NULL.

std_init() is exclusively called from driver init() callbacks for which the
core already checks if the struct sr_dev_driver is non-NULL before invoking
the callback. This means the check in std_init() will always evaluate to
false. So drop this check.

This also means that the prefix parameter that was used in the error
message is no longer needed and can be removed from the function signature.
Doing so will make the std_init() function signature identical to the
init() callback signature which will allow to directly use it as such.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

src/hardware/agilent-dmm/api.c

@@ -74,7 +74,7 @@ SR_PRIV struct sr_dev_driver agdmm_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/appa-55ii/api.c

@@ -46,7 +46,7 @@ SR_PRIV struct sr_dev_driver appa_55ii_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/arachnid-labs-re-load-pro/api.c

@@ -60,7 +60,7 @@ SR_PRIV struct sr_dev_driver arachnid_labs_re_load_pro_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/asix-sigma/api.c

@@ -65,7 +65,7 @@ static int dev_clear(const struct sr_dev_driver *di)
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/atten-pps3xxx/api.c

@@ -79,7 +79,7 @@ SR_PRIV struct sr_dev_driver atten_pps3203_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options, int modelid)

src/hardware/baylibre-acme/api.c

@@ -55,7 +55,7 @@ static const uint64_t samplerates[] = {
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/beaglelogic/api.c

@@ -62,7 +62,7 @@ static const uint64_t samplerates[] = {
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static struct dev_context *beaglelogic_devc_alloc(void)

src/hardware/brymen-bm86x/api.c

@@ -37,7 +37,7 @@ SR_PRIV struct sr_dev_driver brymen_bm86x_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/brymen-dmm/api.c

@@ -37,7 +37,7 @@ static struct sr_dev_driver *di = &brymen_bm857_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *brymen_scan(const char *conn, const char *serialcomm)

src/hardware/cem-dt-885x/api.c

@@ -73,7 +73,7 @@ SR_PRIV struct sr_dev_driver cem_dt_885x_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

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

@@ -58,7 +58,7 @@ SR_PRIV const struct center_dev_info center_devs[] = {
 
 static int init(struct sr_context *sr_ctx, int idx)
 {
-	return std_init(center_devs[idx].di, sr_ctx, LOG_PREFIX);
+	return std_init(center_devs[idx].di, sr_ctx);
 }
 
 static GSList *center_scan(const char *conn, const char *serialcomm, int idx)

src/hardware/chronovu-la/api.c

@@ -66,7 +66,7 @@ static int dev_clear(const struct sr_dev_driver *di)
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static int add_device(int model, struct libusb_device_descriptor *des,

src/hardware/colead-slm/api.c

@@ -46,7 +46,7 @@ SR_PRIV struct sr_dev_driver colead_slm_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/conrad-digi-35-cpu/api.c

@@ -43,7 +43,7 @@ SR_PRIV struct sr_dev_driver conrad_digi_35_cpu_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/demo/demo.c

@@ -181,7 +181,7 @@ static int dev_acquisition_stop(struct sr_dev_inst *sdi);
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static void generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate)

src/hardware/deree-de5000/api.c

@@ -41,7 +41,7 @@ SR_PRIV struct sr_dev_driver deree_de5000_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static int dev_clear(const struct sr_dev_driver *di)

src/hardware/fluke-dmm/api.c

@@ -61,7 +61,7 @@ static const struct flukedmm_profile supported_flukedmm[] = {
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *fluke_scan(struct sr_dev_driver *di, const char *conn,

src/hardware/ftdi-la/api.c

@@ -86,7 +86,7 @@ static const struct ftdi_chip_desc *chip_descs[] = {
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static void scan_device(struct sr_dev_driver *di, struct libusb_device *dev, GSList **devices)

src/hardware/fx2lafw/api.c

@@ -183,7 +183,7 @@ SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/gmc-mh-1x-2x/api.c

@@ -68,7 +68,7 @@ static const uint32_t devopts_bd[] = {
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 /**

src/hardware/gwinstek-gds-800/api.c

@@ -35,7 +35,7 @@ SR_PRIV struct sr_dev_driver gwinstek_gds_800_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)

src/hardware/hameg-hmo/api.c

@@ -49,7 +49,7 @@ enum {
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static int check_manufacturer(const char *manufacturer)

src/hardware/hantek-6xxx/api.c

@@ -165,7 +165,7 @@ static int dev_clear(const struct sr_dev_driver *di)
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/hantek-dso/api.c

@@ -256,7 +256,7 @@ static int dev_clear(const struct sr_dev_driver *di)
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/hp-3457a/api.c

@@ -168,7 +168,7 @@ static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/hung-chang-dso-2100/api.c

@@ -106,7 +106,7 @@ static const uint8_t coupling_map[] = {
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan_port(GSList *devices, struct sr_dev_driver *di,

src/hardware/ikalogic-scanalogic2/api.c

@@ -56,7 +56,7 @@ SR_PRIV struct sr_dev_driver ikalogic_scanalogic2_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/ikalogic-scanaplus/api.c

@@ -67,7 +67,7 @@ static int dev_clear(const struct sr_dev_driver *di)
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/kecheng-kc-330b/api.c

@@ -65,7 +65,7 @@ SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static int scan_kecheng(struct sr_dev_driver *di,

src/hardware/kern-scale/api.c

@@ -38,7 +38,7 @@ static const uint32_t devopts[] = {
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/korad-kaxxxxp/api.c

@@ -66,7 +66,7 @@ SR_PRIV struct sr_dev_driver korad_kaxxxxp_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

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

@@ -40,7 +40,7 @@ static const uint32_t devopts[] = {
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/lecroy-logicstudio/api.c

@@ -75,7 +75,7 @@ SR_PRIV struct sr_dev_driver lecroy_logicstudio_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static struct sr_dev_inst *create_device(struct sr_dev_driver *di,

src/hardware/link-mso19/api.c

@@ -87,7 +87,7 @@ static int dev_clear(const struct sr_dev_driver *di)
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/manson-hcs-3xxx/api.c

@@ -77,7 +77,7 @@ SR_PRIV struct sr_dev_driver manson_hcs_3xxx_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/maynuo-m97/api.c

@@ -113,7 +113,7 @@ SR_PRIV struct sr_dev_driver maynuo_m97_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static struct sr_dev_inst *probe_device(struct sr_modbus_dev_inst *modbus)

src/hardware/mic-985xx/api.c

@@ -59,7 +59,7 @@ SR_PRIV const struct mic_dev_info mic_devs[] = {
 
 static int init(struct sr_context *sr_ctx, int idx)
 {
-	return std_init(mic_devs[idx].di, sr_ctx, LOG_PREFIX);
+	return std_init(mic_devs[idx].di, sr_ctx);
 }
 
 static GSList *mic_scan(const char *conn, const char *serialcomm, int idx)

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

@@ -135,7 +135,7 @@ static const struct lps_modelspec models[] = {
 
 static int init_lps301(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 /** Send command to device with va_list.

src/hardware/norma-dmm/api.c

@@ -67,7 +67,7 @@ static const char *get_typestr(int type, struct sr_dev_driver *drv)
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *drv, GSList *options)

src/hardware/openbench-logic-sniffer/api.c

@@ -89,7 +89,7 @@ SR_PRIV struct sr_dev_driver ols_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/pipistrello-ols/api.c

@@ -79,7 +79,7 @@ SR_PRIV struct sr_dev_driver p_ols_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/rigol-ds/api.c

@@ -274,7 +274,7 @@ static int dev_clear(const struct sr_dev_driver *di)
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)

src/hardware/saleae-logic16/api.c

@@ -97,7 +97,7 @@ static const uint64_t samplerates[] = {
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static gboolean check_conf_profile(libusb_device *dev)

src/hardware/scpi-pps/api.c

@@ -43,7 +43,7 @@ static const struct pps_channel_instance pci[] = {
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)

src/hardware/serial-dmm/api.c

@@ -43,7 +43,7 @@ static const uint32_t devopts[] = {
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/sysclk-lwla/api.c

@@ -65,7 +65,7 @@ static const char *const signal_edge_names[] = {
  */
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 /* Create a new sigrok device instance for the indicated LWLA model.

src/hardware/teleinfo/api.c

@@ -40,7 +40,7 @@ SR_PRIV struct sr_dev_driver teleinfo_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/testo/api.c

@@ -45,7 +45,7 @@ static const struct testo_model models[] = {
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/tondaj-sl-814/api.c

@@ -43,7 +43,7 @@ SR_PRIV struct sr_dev_driver tondaj_sl_814_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

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

@@ -48,7 +48,7 @@ static const uint32_t devopts[] = {
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/uni-t-ut32x/api.c

@@ -41,7 +41,7 @@ SR_PRIV struct sr_dev_driver uni_t_ut32x_driver_info;
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/victor-dmm/api.c

@@ -52,7 +52,7 @@ static const uint32_t devopts[] = {
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/hardware/yokogawa-dlm/api.c

@@ -65,7 +65,7 @@ enum {
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static struct sr_dev_inst *probe_usbtmc_device(struct sr_scpi_dev_inst *scpi)

src/hardware/zeroplus-logic-cube/api.c

@@ -157,7 +157,7 @@ SR_PRIV int zp_set_samplerate(struct dev_context *devc, uint64_t samplerate)
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static GSList *scan(struct sr_dev_driver *di, GSList *options)

src/libsigrok-internal.h

@@ -859,8 +859,7 @@ SR_PRIV int sr_analog_init(struct sr_datafeed_analog *analog,
 typedef int (*dev_close_callback)(struct sr_dev_inst *sdi);
 typedef void (*std_dev_clear_callback)(void *priv);
 
-SR_PRIV int std_init(struct sr_dev_driver *di, struct sr_context *sr_ctx,
+SR_PRIV int std_init(struct sr_dev_driver *di, struct sr_context *sr_ctx);
-		const char *prefix);
 SR_PRIV int std_cleanup(const struct sr_dev_driver *di);
 #ifdef HAVE_LIBSERIALPORT
 SR_PRIV int std_serial_dev_open(struct sr_dev_inst *sdi);

src/session_driver.c

@@ -208,7 +208,7 @@ static int receive_data(int fd, int revents, void *cb_data)
 
 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 {
-	return std_init(di, sr_ctx, LOG_PREFIX);
+	return std_init(di, sr_ctx);
 }
 
 static int dev_clear(const struct sr_dev_driver *di)

src/std.c

@@ -41,20 +41,13 @@
  *
  * @param di The driver instance to use.
  * @param sr_ctx The libsigrok context to assign.
- * @param[in] prefix A driver-specific prefix string used for log messages.
  *
  * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments.
  */
-SR_PRIV int std_init(struct sr_dev_driver *di, struct sr_context *sr_ctx,
+SR_PRIV int std_init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
-		     const char *prefix)
 {
 	struct drv_context *drvc;
 
-	if (!di) {
-		sr_err("%s: Invalid driver, cannot initialize.", prefix);
-		return SR_ERR_ARG;
-	}
-
 	drvc = g_malloc0(sizeof(struct drv_context));
 	drvc->sr_ctx = sr_ctx;
 	drvc->instances = NULL;