ALSA: add/change some comments describing function return values

[karo-tx-linux.git] / sound / drivers / mpu401 / mpu401_uart.c

diff --git a/sound/drivers/mpu401/mpu401_uart.c b/sound/drivers/mpu401/mpu401_uart.c
index 4608c2ca43f84601643be8a6cdba6451d3953a22..e3a90d043f03aa7025cbbd2609b44eedab41d298 100644 (file)
--- a/sound/drivers/mpu401/mpu401_uart.c
+++ b/sound/drivers/mpu401/mpu401_uart.c
@@ -129,6 +129,8 @@ static void _snd_mpu401_uart_interrupt(struct snd_mpu401 *mpu)
  * @dev_id: mpu401 instance
  *
  * Processes the interrupt for MPU401-UART i/o.
+ *
+ * Return: %IRQ_HANDLED if the interrupt was handled. %IRQ_NONE otherwise.
  */
 irqreturn_t snd_mpu401_uart_interrupt(int irq, void *dev_id)
 {
@@ -148,6 +150,8 @@ EXPORT_SYMBOL(snd_mpu401_uart_interrupt);
  * @dev_id: mpu401 instance
  *
  * Processes the interrupt for MPU401-UART output.
+ *
+ * Return: %IRQ_HANDLED if the interrupt was handled. %IRQ_NONE otherwise.
  */
 irqreturn_t snd_mpu401_uart_interrupt_tx(int irq, void *dev_id)
 {
@@ -519,7 +523,7 @@ static void snd_mpu401_uart_free(struct snd_rawmidi *rmidi)
  * not the mpu401 instance itself.  To access to the mpu401 instance,
  * cast from rawmidi->private_data (with struct snd_mpu401 magic-cast).
  *
- * Returns zero if successful, or a negative error code.
+ * Return: Zero if successful, or a negative error code.
  */
 int snd_mpu401_uart_new(struct snd_card *card, int device,
                        unsigned short hardware,