+ ret = i2c_transfer(isl6421->i2c, msg, 2);
+ if (ret < 0)
+ return ret;
+ if (ret != 2)
+ return -EIO;
+
+ /* Store off status now incase future commands fail */
+ isl6421->is_off = is_off;
+
+ /* On overflow, the device will try again after 900 ms (typically) */
+ if (!is_off && (buf & ISL6421_OLF1))
+ msleep(1000);
+
+ /* Re-enable dynamic current limit */
+ if ((isl6421->config & ISL6421_DCL) &&
+ !(isl6421->override_or & ISL6421_DCL)) {
+ isl6421->config &= ~ISL6421_DCL;
+
+ ret = i2c_transfer(isl6421->i2c, msg, 2);
+ if (ret < 0)
+ return ret;
+ if (ret != 2)
+ return -EIO;
+ }
+
+ /* Check if overload flag is active. If so, disable power */
+ if (!is_off && (buf & ISL6421_OLF1)) {
+ isl6421->config &= ~(ISL6421_VSEL1 | ISL6421_EN1);
+ ret = i2c_transfer(isl6421->i2c, msg, 1);
+ if (ret < 0)
+ return ret;
+ if (ret != 1)
+ return -EIO;
+ isl6421->is_off = true;
+
+ dev_warn(&isl6421->i2c->dev,
+ "Overload current detected. disabling LNBf power\n");
+ return -EINVAL;
+ }
+
+ return 0;