sysclk-lwla: Limit use of SR_ERR_ARG to user-supplied arguments.

[libsigrok.git] / hardware / sysclk-lwla / lwla.c

diff --git a/hardware/sysclk-lwla/lwla.c b/hardware/sysclk-lwla/lwla.c
index f1b765927fca7b31c9c95cfbafe67b86df0a1f0f..8a6496fba3b7f3f0015c7bb3aedff15c7e4083e0 100644 (file)
--- a/hardware/sysclk-lwla/lwla.c
+++ b/hardware/sysclk-lwla/lwla.c
@@ -137,8 +137,8 @@ SR_PRIV int lwla_send_command(const struct sr_usb_dev_inst *usb,
        int ret;
        int xfer_len;
 
-       if (usb == NULL || command == NULL || cmd_len <= 0)
-               return SR_ERR_ARG;
+       if (!usb || !command || cmd_len <= 0)
+               return SR_ERR_BUG;
 
        xfer_len = 0;
        ret = libusb_bulk_transfer(usb->devhdl, EP_COMMAND,
@@ -163,8 +163,8 @@ SR_PRIV int lwla_receive_reply(const struct sr_usb_dev_inst *usb,
        int ret;
        int xfer_len;
 
-       if (usb == NULL || reply == NULL || reply_len <= 0)
-               return SR_ERR_ARG;
+       if (!usb || !reply || reply_len <= 0)
+               return SR_ERR_BUG;
 
        xfer_len = 0;
        ret = libusb_bulk_transfer(usb->devhdl, EP_REPLY,