Simplify channel creation.

[libsigrok.git] / src / device.c

diff --git a/src/device.c b/src/device.c
index 1945f01a9fb4a2ad0b8c5989677abc46bab6cf58..1c84a7df48d6823f03543f6c580ffe72f94dd5ad 100644 (file)
--- a/src/device.c
+++ b/src/device.c
@@ -42,7 +42,8 @@
  */
 
 /** @private
- *  Allocate and initialize new struct sr_channel
+ *  Allocate and initialize new struct sr_channel and add to sdi.
+ *  @param[in]  sdi The device instance the channel is connected to.
  *  @param[in]  index @copydoc sr_channel::index
  *  @param[in]  type @copydoc sr_channel::type
  *  @param[in]  enabled @copydoc sr_channel::enabled
@@ -50,8 +51,8 @@
  *
  *  @return A new struct sr_channel*.
  */
-SR_PRIV struct sr_channel *sr_channel_new(int index, int type,
-               gboolean enabled, const char *name)
+SR_PRIV struct sr_channel *sr_channel_new(struct sr_dev_inst *sdi,
+               int index, int type, gboolean enabled, const char *name)
 {
        struct sr_channel *ch;
 
@@ -62,6 +63,8 @@ SR_PRIV struct sr_channel *sr_channel_new(int index, int type,
        if (name)
                ch->name = g_strdup(name);
 
+       sdi->channels = g_slist_append(sdi->channels, ch);
+
        return ch;
 }
 
@@ -227,13 +230,10 @@ SR_API struct sr_dev_inst *sr_dev_inst_user_new(const char *vendor,
  */
 SR_API int sr_dev_inst_channel_add(struct sr_dev_inst *sdi, int index, int type, const char *name)
 {
-       struct sr_channel *ch;
-
        if (!sdi || sdi->inst_type != SR_INST_USER || index < 0)
                return SR_ERR_ARG;
 
-       ch = sr_channel_new(index, type, TRUE, name);
-       sdi->channels = g_slist_append(sdi->channels, ch);
+       sr_channel_new(sdi, index, type, TRUE, name);
 
        return SR_OK;
 }
@@ -281,7 +281,6 @@ SR_PRIV void sr_dev_inst_free(struct sr_dev_inst *sdi)
  *  @param[in]  address @copydoc sr_usb_dev_inst::address
  *  @param[in]  hdl @copydoc sr_usb_dev_inst::devhdl
  *
- *  @retval NULL Error
  *  @retval other struct sr_usb_dev_inst * for USB device instance.
  */
 SR_PRIV struct sr_usb_dev_inst *sr_usb_dev_inst_new(uint8_t bus,
@@ -289,11 +288,7 @@ SR_PRIV struct sr_usb_dev_inst *sr_usb_dev_inst_new(uint8_t bus,
 {
        struct sr_usb_dev_inst *udi;
 
-       if (!(udi = g_try_malloc(sizeof(struct sr_usb_dev_inst)))) {
-               sr_err("USB device instance malloc failed.");
-               return NULL;
-       }
-
+       udi = g_malloc0(sizeof(struct sr_usb_dev_inst));
        udi->bus = bus;
        udi->address = address;
        udi->devhdl = hdl;
@@ -322,10 +317,11 @@ SR_PRIV void sr_usb_dev_inst_free(struct sr_usb_dev_inst *usb)
  *
  * @param[in] port OS-specific serial port specification. Examples:
  *                 "/dev/ttyUSB0", "/dev/ttyACM1", "/dev/tty.Modem-0", "COM1".
+ *                 Must not be NULL.
  * @param[in] serialcomm A serial communication parameters string, in the form
  *              of \<speed\>/\<data bits\>\<parity\>\<stopbits\>, for example
  *              "9600/8n1" or "600/7o2". This is an optional parameter;
- *              it may be filled in later.
+ *              it may be filled in later. Can be NULL.
  *
  * @return A pointer to a newly initialized struct sr_serial_dev_inst,
  *         or NULL on error.
@@ -335,16 +331,7 @@ SR_PRIV struct sr_serial_dev_inst *sr_serial_dev_inst_new(const char *port,
 {
        struct sr_serial_dev_inst *serial;
 
-       if (!port) {
-               sr_err("Serial port required.");
-               return NULL;
-       }
-
-       if (!(serial = g_try_malloc0(sizeof(struct sr_serial_dev_inst)))) {
-               sr_err("Serial device instance malloc failed.");
-               return NULL;
-       }
-
+       serial = g_malloc0(sizeof(struct sr_serial_dev_inst));
        serial->port = g_strdup(port);
        if (serialcomm)
                serial->serialcomm = g_strdup(serialcomm);
@@ -369,16 +356,7 @@ SR_PRIV struct sr_usbtmc_dev_inst *sr_usbtmc_dev_inst_new(const char *device)
 {
        struct sr_usbtmc_dev_inst *usbtmc;
 
-       if (!device) {
-               sr_err("Device name required.");
-               return NULL;
-       }
-
-       if (!(usbtmc = g_try_malloc0(sizeof(struct sr_usbtmc_dev_inst)))) {
-               sr_err("USBTMC device instance malloc failed.");
-               return NULL;
-       }
-
+       usbtmc = g_malloc0(sizeof(struct sr_usbtmc_dev_inst));
        usbtmc->device = g_strdup(device);
        usbtmc->fd = -1;