X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Fkecheng-kc-330b%2Fapi.c;h=86ac30b15a5dfd7f435129adf4cefde36b553441;hb=efa9840222f2925c187715377e3646679fd8496c;hp=d30f1604ec8aaaeea00e008902038125a5a6e1eb;hpb=700d6b64d578ce10e57f6a2289e37a5564eccf1c;p=libsigrok.git

diff --git a/src/hardware/kecheng-kc-330b/api.c b/src/hardware/kecheng-kc-330b/api.c
index d30f1604..86ac30b1 100644
--- a/src/hardware/kecheng-kc-330b/api.c
+++ b/src/hardware/kecheng-kc-330b/api.c
@@ -160,23 +160,13 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
 	return devices;
 }
 
-static GSList *dev_list(const struct sr_dev_driver *di)
-{
-	return ((struct drv_context *)(di->context))->instances;
-}
-
 static int dev_open(struct sr_dev_inst *sdi)
 {
 	struct sr_dev_driver *di = sdi->driver;
-	struct drv_context *drvc;
+	struct drv_context *drvc = di->context;
 	struct sr_usb_dev_inst *usb;
 	int ret;
 
-	if (!(drvc = di->context)) {
-		sr_err("Driver was not initialized.");
-		return SR_ERR;
-	}
-
 	usb = sdi->conn;
 
 	if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK)
@@ -198,15 +188,9 @@ static int dev_open(struct sr_dev_inst *sdi)
 
 static int dev_close(struct sr_dev_inst *sdi)
 {
-	struct sr_dev_driver *di = sdi->driver;
 	struct dev_context *devc;
 	struct sr_usb_dev_inst *usb;
 
-	if (!di->context) {
-		sr_err("Driver was not initialized.");
-		return SR_ERR;
-	}
-
 	usb = sdi->conn;
 
 	if (!usb->devhdl)
@@ -279,7 +263,6 @@ static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *s
 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 		const struct sr_channel_group *cg)
 {
-	struct sr_dev_driver *di = sdi->driver;
 	struct dev_context *devc;
 	uint64_t p, q;
 	unsigned int i;
@@ -291,11 +274,6 @@ static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sd
 	if (sdi->status != SR_ST_ACTIVE)
 		return SR_ERR_DEV_CLOSED;
 
-	if (!di->context) {
-		sr_err("Driver was not initialized.");
-		return SR_ERR;
-	}
-
 	devc = sdi->priv;
 	ret = SR_OK;
 	switch (key) {
@@ -537,7 +515,7 @@ SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info = {
 	.init = init,
 	.cleanup = std_cleanup,
 	.scan = scan,
-	.dev_list = dev_list,
+	.dev_list = std_dev_list,
 	.dev_clear = NULL,
 	.config_get = config_get,
 	.config_set = config_set,