--- zzzz-none-000/linux-3.10.107/sound/usb/6fire/firmware.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/sound/usb/6fire/firmware.c	2021-02-04 17:41:59.000000000 +0000
@@ -219,16 +219,16 @@
 	ret = request_firmware(&fw, fwname, &device->dev);
 	if (ret < 0) {
 		kfree(rec);
-		snd_printk(KERN_ERR PREFIX "error requesting ezusb "
-				"firmware %s.\n", fwname);
+		dev_err(&intf->dev,
+			"error requesting ezusb firmware %s.\n", fwname);
 		return ret;
 	}
 	ret = usb6fire_fw_ihex_init(fw, rec);
 	if (ret < 0) {
 		kfree(rec);
 		release_firmware(fw);
-		snd_printk(KERN_ERR PREFIX "error validating ezusb "
-				"firmware %s.\n", fwname);
+		dev_err(&intf->dev,
+			"error validating ezusb firmware %s.\n", fwname);
 		return ret;
 	}
 	/* upload firmware image */
@@ -237,8 +237,9 @@
 	if (ret < 0) {
 		kfree(rec);
 		release_firmware(fw);
-		snd_printk(KERN_ERR PREFIX "unable to upload ezusb "
-				"firmware %s: begin message.\n", fwname);
+		dev_err(&intf->dev,
+			"unable to upload ezusb firmware %s: begin message.\n",
+			fwname);
 		return ret;
 	}
 
@@ -248,8 +249,9 @@
 		if (ret < 0) {
 			kfree(rec);
 			release_firmware(fw);
-			snd_printk(KERN_ERR PREFIX "unable to upload ezusb "
-					"firmware %s: data urb.\n", fwname);
+			dev_err(&intf->dev,
+				"unable to upload ezusb firmware %s: data urb.\n",
+				fwname);
 			return ret;
 		}
 	}
@@ -260,8 +262,9 @@
 		ret = usb6fire_fw_ezusb_write(device, 0xa0, postaddr,
 				postdata, postlen);
 		if (ret < 0) {
-			snd_printk(KERN_ERR PREFIX "unable to upload ezusb "
-					"firmware %s: post urb.\n", fwname);
+			dev_err(&intf->dev,
+				"unable to upload ezusb firmware %s: post urb.\n",
+				fwname);
 			return ret;
 		}
 	}
@@ -269,8 +272,9 @@
 	data = 0x00; /* resume ezusb cpu */
 	ret = usb6fire_fw_ezusb_write(device, 0xa0, 0xe600, &data, 1);
 	if (ret < 0) {
-		snd_printk(KERN_ERR PREFIX "unable to upload ezusb "
-				"firmware %s: end message.\n", fwname);
+		dev_err(&intf->dev,
+			"unable to upload ezusb firmware %s: end message.\n",
+			fwname);
 		return ret;
 	}
 	return 0;
@@ -292,7 +296,7 @@
 
 	ret = request_firmware(&fw, fwname, &device->dev);
 	if (ret < 0) {
-		snd_printk(KERN_ERR PREFIX "unable to get fpga firmware %s.\n",
+		dev_err(&intf->dev, "unable to get fpga firmware %s.\n",
 				fwname);
 		kfree(buffer);
 		return -EIO;
@@ -305,21 +309,21 @@
 	if (ret < 0) {
 		kfree(buffer);
 		release_firmware(fw);
-		snd_printk(KERN_ERR PREFIX "unable to upload fpga firmware: "
-				"begin urb.\n");
+		dev_err(&intf->dev,
+			"unable to upload fpga firmware: begin urb.\n");
 		return ret;
 	}
 
 	while (c != end) {
 		for (i = 0; c != end && i < FPGA_BUFSIZE; i++, c++)
-			buffer[i] = byte_rev_table[(u8) *c];
+			buffer[i] = bitrev8((u8)*c);
 
 		ret = usb6fire_fw_fpga_write(device, buffer, i);
 		if (ret < 0) {
 			release_firmware(fw);
 			kfree(buffer);
-			snd_printk(KERN_ERR PREFIX "unable to upload fpga "
-					"firmware: fw urb.\n");
+			dev_err(&intf->dev,
+				"unable to upload fpga firmware: fw urb.\n");
 			return ret;
 		}
 	}
@@ -328,8 +332,8 @@
 
 	ret = usb6fire_fw_ezusb_write(device, 9, 0, NULL, 0);
 	if (ret < 0) {
-		snd_printk(KERN_ERR PREFIX "unable to upload fpga firmware: "
-				"end urb.\n");
+		dev_err(&intf->dev,
+			"unable to upload fpga firmware: end urb.\n");
 		return ret;
 	}
 	return 0;
@@ -338,7 +342,7 @@
 /* check, if the firmware version the devices has currently loaded
  * is known by this driver. 'version' needs to have 4 bytes version
  * info data. */
-static int usb6fire_fw_check(u8 *version)
+static int usb6fire_fw_check(struct usb_interface *intf, const u8 *version)
 {
 	int i;
 
@@ -346,10 +350,10 @@
 		if (!memcmp(version, known_fw_versions + i, 2))
 			return 0;
 
-	snd_printk(KERN_ERR PREFIX "invalid fimware version in device: %*ph. "
+	dev_err(&intf->dev, "invalid fimware version in device: %4ph. "
 			"please reconnect to power. if this failure "
 			"still happens, check your firmware installation.",
-			4, version);
+			version);
 	return -EINVAL;
 }
 
@@ -364,16 +368,16 @@
 
 	ret = usb6fire_fw_ezusb_read(device, 1, 0, buffer, 8);
 	if (ret < 0) {
-		snd_printk(KERN_ERR PREFIX "unable to receive device "
-				"firmware state.\n");
+		dev_err(&intf->dev,
+			"unable to receive device firmware state.\n");
 		return ret;
 	}
 	if (buffer[0] != 0xeb || buffer[1] != 0xaa || buffer[2] != 0x55) {
-		snd_printk(KERN_ERR PREFIX "unknown device firmware state "
-				"received from device: ");
+		dev_err(&intf->dev,
+			"unknown device firmware state received from device:");
 		for (i = 0; i < 8; i++)
-			snd_printk("%02x ", buffer[i]);
-		snd_printk("\n");
+			printk(KERN_CONT "%02x ", buffer[i]);
+		printk(KERN_CONT "\n");
 		return -EIO;
 	}
 	/* do we need fpga loader ezusb firmware? */
@@ -386,7 +390,7 @@
 	}
 	/* do we need fpga firmware and application ezusb firmware? */
 	else if (buffer[3] == 0x02) {
-		ret = usb6fire_fw_check(buffer + 4);
+		ret = usb6fire_fw_check(intf, buffer + 4);
 		if (ret < 0)
 			return ret;
 		ret = usb6fire_fw_fpga_upload(intf, "6fire/dmx6firecf.bin");
@@ -402,14 +406,14 @@
 	}
 	/* all fw loaded? */
 	else if (buffer[3] == 0x03)
-		return usb6fire_fw_check(buffer + 4);
+		return usb6fire_fw_check(intf, buffer + 4);
 	/* unknown data? */
 	else {
-		snd_printk(KERN_ERR PREFIX "unknown device firmware state "
-				"received from device: ");
+		dev_err(&intf->dev,
+			"unknown device firmware state received from device: ");
 		for (i = 0; i < 8; i++)
-			snd_printk("%02x ", buffer[i]);
-		snd_printk("\n");
+			printk(KERN_CONT "%02x ", buffer[i]);
+		printk(KERN_CONT "\n");
 		return -EIO;
 	}
 	return 0;