rigol-ds: Fix crash when fetching logic channels

[libsigrok.git] / src / hardware / hantek-dso / protocol.c

diff --git a/src/hardware/hantek-dso/protocol.c b/src/hardware/hantek-dso/protocol.c
index bf91de451483f19fce735d942d532bdab4b03f2c..644ac0d24dc913a636be63943f24db67072ee26e 100644 (file)
--- a/src/hardware/hantek-dso/protocol.c
+++ b/src/hardware/hantek-dso/protocol.c
@@ -27,8 +27,6 @@
 #include "libsigrok-internal.h"
 #include "protocol.h"
 
-#define NUM_CHANNELS 2
-
 static int send_begin(const struct sr_dev_inst *sdi)
 {
        struct sr_usb_dev_inst *usb;
@@ -119,10 +117,6 @@ SR_PRIV int dso_open(struct sr_dev_inst *sdi)
        devc = sdi->priv;
        usb = sdi->conn;
 
-       if (sdi->status == SR_ST_ACTIVE)
-               /* already in use */
-               return SR_ERR;
-
        libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
        for (i = 0; devlist[i]; i++) {
                libusb_get_device_descriptor(devlist[i], &des);