diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 38e775629c1..96bf25ccc1c 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -367,9 +367,8 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
 
     Module for C-Media CMI8338/8738/8768/8770 PCI sound cards.
 
-    mpu_port    - port address of MIDI interface:
+    mpu_port    - port address of MIDI interface (8338 only):
 		  0x300,0x310,0x320,0x330 = legacy port,
-		  1 = integrated PCI port (8738 or later),
 		  0 = disable (default)
     fm_port     - port address of OPL-3 FM synthesizer (8x38 only):
 		  0x388 = legacy port,
diff --git a/Documentation/sound/alsa/CMIPCI.txt b/Documentation/sound/alsa/CMIPCI.txt
index 664be46566b..16935c8561f 100644
--- a/Documentation/sound/alsa/CMIPCI.txt
+++ b/Documentation/sound/alsa/CMIPCI.txt
@@ -209,12 +209,13 @@ In addition to the standard SB mixer, CM8x38 provides more functions.
 MIDI CONTROLLER
 ---------------
 
-The MPU401-UART interface is disabled as default.  You need to set
-module option "mpu_port" with a valid I/O port address to enable the
-MIDI support.  The valid I/O ports are 0x300, 0x310, 0x320 and 0x330.
-Choose the value which doesn't conflict with other cards.  With
-CMI8738 and newer chips, you can use "mpu_port=1" to use a PCI port
-address that does not conflict with any other card.
+With CMI8338 chips, the MPU401-UART interface is disabled as default.
+You need to set the module option "mpu_port" to a valid I/O port address
+to enable MIDI support.  Valid I/O ports are 0x300, 0x310, 0x320 and
+0x330.  Choose a value that doesn't conflict with other cards.
+
+With CMI8738 and newer chips, the MIDI interface is enabled by default
+and the driver automatically chooses a port address.
 
 There is _no_ hardware wavetable function on this chip (except for
 OPL3 synth below).
diff --git a/sound/pci/cmipci.c b/sound/pci/cmipci.c
index af266eb8305..fdc4615ea0e 100644
--- a/sound/pci/cmipci.c
+++ b/sound/pci/cmipci.c
@@ -2798,7 +2798,7 @@ static int __devinit snd_cmipci_create_fm(struct cmipci *cm, long fm_port)
 	if (!fm_port)
 		goto disable_fm;
 
-	if (cm->chip_version > 33) {
+	if (cm->chip_version >= 39) {
 		/* first try FM regs in PCI port range */
 		iosynth = cm->iobase + CM_REG_FM_PCI;
 		err = snd_opl3_create(cm->card, iosynth, iosynth + 2,
@@ -2990,8 +2990,7 @@ static int __devinit snd_cmipci_create(struct snd_card *card, struct pci_dev *pc
 		return err;
 	}
 
-	val = 0;
-	if (cm->chip_version > 33 && mpu_port[dev] == 1) {
+	if (cm->chip_version >= 39) {
 		val = snd_cmipci_read_b(cm, CM_REG_MPU_PCI + 1);
 		if (val != 0x00 && val != 0xff) {
 			iomidi = cm->iobase + CM_REG_MPU_PCI;
@@ -2999,6 +2998,7 @@ static int __devinit snd_cmipci_create(struct snd_card *card, struct pci_dev *pc
 		}
 	}
 	if (!integrated_midi) {
+		val = 0;
 		iomidi = mpu_port[dev];
 		switch (iomidi) {
 		case 0x320: val = CM_VMPU_320; break;