1 files changed, 10 insertions, 10 deletions

diff --git a/sound/drivers/mpu401/mpu401_uart.c b/sound/drivers/mpu401/mpu401_uart.c
index 2af09996a3d0..9d01c181feca 100644
--- a/sound/drivers/mpu401/mpu401_uart.c
+++ b/sound/drivers/mpu401/mpu401_uart.c
@@ -3,7 +3,7 @@
  *  Routines for control of MPU-401 in UART mode
  *
  *  MPU-401 supports UART mode which is not capable generate transmit
- *  interrupts thus output is done via polling. Also, if irq < 0, then
+ *  interrupts thus output is done via polling. Without interrupt,
  *  input is done also via polling. Do not expect good performance.
  *
  *
@@ -374,7 +374,7 @@ snd_mpu401_uart_input_trigger(struct snd_rawmidi_substream *substream, int up)
                         /* first time - flush FIFO */
                         while (max-- > 0)
                                 mpu->read(mpu, MPU401D(mpu));
-                        if (mpu->irq < 0)
+                        if (mpu->info_flags & MPU401_INFO_USE_TIMER)
                                 snd_mpu401_uart_add_timer(mpu, 1);
                 }
                 
@@ -383,7 +383,7 @@ snd_mpu401_uart_input_trigger(struct snd_rawmidi_substream *substream, int up)
                 snd_mpu401_uart_input_read(mpu);
                 spin_unlock_irqrestore(&mpu->input_lock, flags);
         } else {
-                if (mpu->irq < 0)
+                if (mpu->info_flags & MPU401_INFO_USE_TIMER)
                         snd_mpu401_uart_remove_timer(mpu, 1);
                 clear_bit(MPU401_MODE_BIT_INPUT_TRIGGER, &mpu->mode);
         }
@@ -496,7 +496,7 @@ static struct snd_rawmidi_ops snd_mpu401_uart_input =
 static void snd_mpu401_uart_free(struct snd_rawmidi *rmidi)
 {
         struct snd_mpu401 *mpu = rmidi->private_data;
-        if (mpu->irq_flags && mpu->irq >= 0)
+        if (mpu->irq >= 0)
                 free_irq(mpu->irq, (void *) mpu);
         release_and_free_resource(mpu->res);
         kfree(mpu);
@@ -509,8 +509,7 @@ static void snd_mpu401_uart_free(struct snd_rawmidi *rmidi)
  * @hardware: the hardware type, MPU401_HW_XXXX
  * @port: the base address of MPU401 port
  * @info_flags: bitflags MPU401_INFO_XXX
- * @irq: the irq number, -1 if no interrupt for mpu
- * @irq_flags: the irq request flags (SA_XXX), 0 if irq was already reserved.
+ * @irq: the ISA irq number, -1 if not to be allocated
  * @rrawmidi: the pointer to store the new rawmidi instance
  *
  * Creates a new MPU-401 instance.
@@ -525,7 +524,7 @@ int snd_mpu401_uart_new(struct snd_card *card, int device,
                         unsigned short hardware,
                         unsigned long port,
                         unsigned int info_flags,
-                        int irq, int irq_flags,
+                        int irq,
                         struct snd_rawmidi ** rrawmidi)
 {
         struct snd_mpu401 *mpu;
@@ -577,8 +576,8 @@ int snd_mpu401_uart_new(struct snd_card *card, int device,
                 mpu->cport = port + 2;
         else
                 mpu->cport = port + 1;
-        if (irq >= 0 && irq_flags) {
-                if (request_irq(irq, snd_mpu401_uart_interrupt, irq_flags,
+        if (irq >= 0) {
+                if (request_irq(irq, snd_mpu401_uart_interrupt, IRQF_DISABLED,
                                 "MPU401 UART", (void *) mpu)) {
                         snd_printk(KERN_ERR "mpu401_uart: "
                                    "unable to grab IRQ %d\n", irq);
@@ -586,9 +585,10 @@ int snd_mpu401_uart_new(struct snd_card *card, int device,
                         return -EBUSY;
                 }
         }
+        if (irq < 0 && !(info_flags & MPU401_INFO_IRQ_HOOK))
+                info_flags |= MPU401_INFO_USE_TIMER;
         mpu->info_flags = info_flags;
         mpu->irq = irq;
-        mpu->irq_flags = irq_flags;
         if (card->shortname[0])
                 snprintf(rmidi->name, sizeof(rmidi->name), "%s MIDI",
                          card->shortname);