--- zzzz-none-000/linux-3.10.107/sound/oss/mpu401.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/sound/oss/mpu401.c	2021-02-04 17:41:59.000000000 +0000
@@ -316,6 +316,7 @@
 				case 0xf6:
 					/* printk( "tune_request\n"); */
 					devc->m_state = ST_INIT;
+					break;
 
 					/*
 					 *    Real time messages
@@ -567,7 +568,6 @@
 static int mpu401_command(int dev, mpu_command_rec * cmd)
 {
 	int i, timeout, ok;
-	int ret = 0;
 	unsigned long   flags;
 	struct mpu_config *devc;
 
@@ -644,7 +644,6 @@
 			}
 		}
 	}
-	ret = 0;
 	cmd->data[0] = 0;
 
 	if (cmd->nr_returns)
@@ -666,7 +665,7 @@
 		}
 	}
 	spin_unlock_irqrestore(&devc->lock,flags);
-	return ret;
+	return 0;
 }
 
 static int mpu_cmd(int dev, int cmd, int data)
@@ -974,7 +973,6 @@
 	devc->m_busy = 0;
 	devc->m_state = ST_INIT;
 	devc->shared_irq = hw_config->always_detect;
-	devc->irq = hw_config->irq;
 	spin_lock_init(&devc->lock);
 
 	if (devc->irq < 0)