X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Ffx2lafw%2Fprotocol.c;h=ec2b5c011b27ab94add03bfde6e211c2f76ef3f9;hb=6c1a76d1263403f908ac31271a4fd01792488545;hp=95ce4bd3bd581e18459294b0e5ed011c3fa3a52d;hpb=b0acb693f94d920887684eb9fdae77e036965975;p=libsigrok.git

diff --git a/src/hardware/fx2lafw/protocol.c b/src/hardware/fx2lafw/protocol.c
index 95ce4bd3..ec2b5c01 100644
--- a/src/hardware/fx2lafw/protocol.c
+++ b/src/hardware/fx2lafw/protocol.c
@@ -147,7 +147,7 @@ SR_PRIV int fx2lafw_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di)
 	struct dev_context *devc;
 	struct drv_context *drvc;
 	struct version_info vi;
-	int ret, i, device_count;
+	int ret = SR_ERR, i, device_count;
 	uint8_t revid;
 	char connection_id[64];
 
@@ -155,10 +155,6 @@ SR_PRIV int fx2lafw_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di)
 	devc = sdi->priv;
 	usb = sdi->conn;
 
-	if (sdi->status == SR_ST_ACTIVE)
-		/* Device is already in use. */
-		return SR_ERR;
-
 	device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
 	if (device_count < 0) {
 		sr_err("Failed to get device list: %s.",
@@ -178,7 +174,9 @@ SR_PRIV int fx2lafw_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di)
 			/*
 			 * Check device by its physical USB bus/port address.
 			 */
-			usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
+			if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0)
+				continue;
+
 			if (strcmp(sdi->connection_id, connection_id))
 				/* This is not the one. */
 				continue;
@@ -194,6 +192,7 @@ SR_PRIV int fx2lafw_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di)
 		} else {
 			sr_err("Failed to open device: %s.",
 			       libusb_error_name(ret));
+			ret = SR_ERR;
 			break;
 		}
 
@@ -202,7 +201,8 @@ SR_PRIV int fx2lafw_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di)
 				if ((ret = libusb_detach_kernel_driver(usb->devhdl, USB_INTERFACE)) < 0) {
 					sr_err("Failed to detach kernel driver: %s.",
 						libusb_error_name(ret));
-					return SR_ERR;
+					ret = SR_ERR;
+					break;
 				}
 			}
 		}
@@ -231,7 +231,6 @@ SR_PRIV int fx2lafw_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di)
 			break;
 		}
 
-		sdi->status = SR_ST_ACTIVE;
 		sr_info("Opened device on %d.%d (logical) / %s (physical), "
 			"interface %d, firmware %d.%d.",
 			usb->bus, usb->address, connection_id,
@@ -240,14 +239,14 @@ SR_PRIV int fx2lafw_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di)
 		sr_info("Detected REVID=%d, it's a Cypress CY7C68013%s.",
 			revid, (revid != 1) ? " (FX2)" : "A (FX2LP)");
 
+		ret = SR_OK;
+
 		break;
 	}
-	libusb_free_device_list(devlist, 1);
 
-	if (sdi->status != SR_ST_ACTIVE)
-		return SR_ERR;
+	libusb_free_device_list(devlist, 1);
 
-	return SR_OK;
+	return ret;
 }
 
 SR_PRIV struct dev_context *fx2lafw_dev_new(void)
@@ -617,7 +616,7 @@ static int start_transfers(const struct sr_dev_inst *sdi)
 	if ((trigger = sr_session_trigger_get(sdi->session))) {
 		int pre_trigger_samples = 0;
 		if (devc->limit_samples > 0)
-			pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
+			pre_trigger_samples = (devc->capture_ratio * devc->limit_samples) / 100;
 		devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
 		if (!devc->stl)
 			return SR_ERR_MALLOC;
@@ -683,9 +682,6 @@ SR_PRIV int fx2lafw_start_acquisition(const struct sr_dev_inst *sdi)
 	int timeout, ret;
 	size_t size;
 
-	if (sdi->status != SR_ST_ACTIVE)
-		return SR_ERR_DEV_CLOSED;
-
 	di = sdi->driver;
 	drvc = di->context;
 	devc = sdi->priv;