std_serial_dev_acquisition_stop(): Remove serial parameter

All callers of std_serial_dev_acquisition_stop() currently pass sdi->conn
for the serial parameter. And the other std_serial helper functions already
require that the conn field of the sr_driver_inst passed to the functions
points to the sr_serial_dev_inst associated with the device.

Modify std_serial_dev_acquisition_stop() to follow the same pattern and
remove the serial parameter. This simplifies the API and ensures consistent
behaviour between different drivers.

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

src/hardware/agilent-dmm/api.c

@@ -210,8 +210,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
-	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
+	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close);
-			sdi->conn);
 }
 
 static struct sr_dev_driver agdmm_driver_info = {

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

@@ -218,7 +218,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
 	return std_serial_dev_acquisition_stop(sdi,
-			std_serial_dev_close, sdi->conn);
+			std_serial_dev_close);
 }
 
 static struct sr_dev_driver appa_55ii_driver_info = {

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

@@ -338,7 +338,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
 	return std_serial_dev_acquisition_stop(sdi,
-		std_serial_dev_close, sdi->conn);
+		std_serial_dev_close);
 }
 
 static struct sr_dev_driver arachnid_labs_re_load_pro_driver_info = {

src/hardware/brymen-dmm/api.c

@@ -178,8 +178,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
-	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
+	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close);
-			sdi->conn);
 }
 
 static struct sr_dev_driver brymen_bm857_driver_info = {

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

@@ -369,8 +369,7 @@ static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 	if (sdi->status != SR_ST_ACTIVE)
 		return SR_ERR_DEV_CLOSED;
 
-	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
+	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close);
-			sdi->conn);
 }
 
 static struct sr_dev_driver cem_dt_885x_driver_info = {

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

@@ -186,7 +186,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi, int idx)
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
 	return std_serial_dev_acquisition_stop(sdi,
-			std_serial_dev_close, sdi->conn);
+			std_serial_dev_close);
 }
 
 /* Driver-specific API function wrappers */

src/hardware/colead-slm/api.c

@@ -139,8 +139,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
-	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
+	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close);
-			sdi->conn);
 }
 
 static struct sr_dev_driver colead_slm_driver_info = {

src/hardware/fluke-dmm/api.c

@@ -246,8 +246,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
-	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
+	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close);
-			sdi->conn);
 }
 
 static struct sr_dev_driver flukedmm_driver_info = {

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

@@ -470,8 +470,7 @@ static int dev_acquisition_start_2x_bd232(const struct sr_dev_inst *sdi)
 
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
-	return std_serial_dev_acquisition_stop(sdi, dev_close,
+	return std_serial_dev_acquisition_stop(sdi, dev_close);
-			sdi->conn);
 }
 
 static struct sr_dev_driver gmc_mh_1x_2x_rs232_driver_info = {

src/hardware/kern-scale/api.c

@@ -176,8 +176,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
-	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
+	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close);
-			sdi->conn);
 }
 
 #define SCALE(ID, CHIPSET, VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \

src/hardware/korad-kaxxxxp/api.c

@@ -366,7 +366,7 @@ static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 		return SR_ERR_DEV_CLOSED;
 
 	return std_serial_dev_acquisition_stop(sdi,
-		std_serial_dev_close, sdi->conn);
+		std_serial_dev_close);
 }
 
 static struct sr_dev_driver korad_kaxxxxp_driver_info = {

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

@@ -372,7 +372,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
 	return std_serial_dev_acquisition_stop(sdi,
-			std_serial_dev_close, sdi->conn);
+			std_serial_dev_close);
 }
 
 static struct sr_dev_driver manson_hcs_3xxx_driver_info = {

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

@@ -197,8 +197,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi, int idx)
 
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
-	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
+	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close);
-			sdi->conn);
 }
 
 /* Driver-specific API function wrappers */

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

@@ -782,8 +782,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
-	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
+	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close);
-			sdi->conn);
 }
 
 static struct sr_dev_driver motech_lps_301_driver_info = {

src/hardware/norma-dmm/api.c

@@ -221,8 +221,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
-	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
+	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close);
-			sdi->conn);
 }
 
 static struct sr_dev_driver norma_dmm_driver_info = {

src/hardware/pce-322a/api.c

@@ -321,8 +321,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
-	return std_serial_dev_acquisition_stop(sdi, dev_close,
+	return std_serial_dev_acquisition_stop(sdi, dev_close);
-			sdi->conn);
 }
 
 static struct sr_dev_driver pce_322a_driver_info = {

src/hardware/serial-dmm/api.c

@@ -197,8 +197,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
-	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
+	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close);
-			sdi->conn);
 }
 
 #define DMM(ID, CHIPSET, VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, TIMEOUT, \

src/hardware/teleinfo/api.c

@@ -182,7 +182,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
 	return std_serial_dev_acquisition_stop(sdi,
-			std_serial_dev_close, sdi->conn);
+			std_serial_dev_close);
 }
 
 static struct sr_dev_driver teleinfo_driver_info = {

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

@@ -151,8 +151,7 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 
 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 {
-	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
+	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close);
-			sdi->conn);
 }
 
 static struct sr_dev_driver tondaj_sl_814_driver_info = {

src/lcr/es51919.c

@@ -927,5 +927,5 @@ SR_PRIV int es51919_serial_acquisition_start(const struct sr_dev_inst *sdi)
 SR_PRIV int es51919_serial_acquisition_stop(struct sr_dev_inst *sdi)
 {
 	return std_serial_dev_acquisition_stop(sdi,
-			std_serial_dev_close, sdi->conn);
+			std_serial_dev_close);
 }

src/libsigrok-internal.h

@@ -927,8 +927,7 @@ 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);
 SR_PRIV int std_serial_dev_acquisition_stop(struct sr_dev_inst *sdi,
-		dev_close_callback dev_close_fn,
+		dev_close_callback dev_close_fn);
-		struct sr_serial_dev_inst *serial);
 #endif
 SR_PRIV int std_session_send_df_header(const struct sr_dev_inst *sdi);
 SR_PRIV int std_session_send_df_end(const struct sr_dev_inst *sdi);

src/std.c

@@ -206,8 +206,6 @@ SR_PRIV int std_serial_dev_close(struct sr_dev_inst *sdi)
  * @param cb_data Opaque 'cb_data' pointer. Must not be NULL.
  * @param dev_close_fn Function pointer to the driver's dev_close().
  *               	  Must not be NULL.
- * @param serial The serial device instance (struct serial_dev_inst *).
- *               Must not be NULL.
  *
  * @retval SR_OK Success.
  * @retval SR_ERR_ARG Invalid arguments.
@@ -215,9 +213,9 @@ SR_PRIV int std_serial_dev_close(struct sr_dev_inst *sdi)
  * @retval SR_ERR Other errors.
  */
 SR_PRIV int std_serial_dev_acquisition_stop(struct sr_dev_inst *sdi,
-			dev_close_callback dev_close_fn,
+			dev_close_callback dev_close_fn)
-			struct sr_serial_dev_inst *serial)
 {
+	struct sr_serial_dev_inst *serial = sdi->conn;
 	const char *prefix = sdi->driver->name;
 	int ret;