[PATCH 2/3] ALSA: mpu401: Use common error handling code in snd_mpu401_uart_new()

SF Markus Elfring
2017-08-12T19:12:39Z

Date: Sat, 12 Aug 2017 20:40:17 +0200

Add a jump target so that a bit of exception handling can be better reused
at the end of this function.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
sound/drivers/mpu401/mpu401_uart.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/sound/drivers/mpu401/mpu401_uart.c b/sound/drivers/mpu401/mpu401_uart.c
index cc347386fc2b..e8bdea193eab 100644
--- a/sound/drivers/mpu401/mpu401_uart.c
+++ b/sound/drivers/mpu401/mpu401_uart.c
@@ -545,8 +545,8 @@ int snd_mpu401_uart_new(struct snd_card *card, int device,
return err;
mpu = kzalloc(sizeof(*mpu), GFP_KERNEL);
if (mpu = NULL) {
- snd_device_free(card, rmidi);
- return -ENOMEM;
+ err = -ENOMEM;
+ goto free_device;
}
rmidi->private_data = mpu;
rmidi->private_free = snd_mpu401_uart_free;
@@ -562,8 +562,8 @@ int snd_mpu401_uart_new(struct snd_card *card, int device,
snd_printk(KERN_ERR "mpu401_uart: "
"unable to grab port 0x%lx size %d\n",
port, res_size);
- snd_device_free(card, rmidi);
- return -EBUSY;
+ err = -EBUSY;
+ goto free_device;
}
}
if (info_flags & MPU401_INFO_MMIO) {
@@ -583,8 +583,8 @@ int snd_mpu401_uart_new(struct snd_card *card, int device,
"MPU401 UART", (void *) mpu)) {
snd_printk(KERN_ERR "mpu401_uart: "
"unable to grab IRQ %d\n", irq);
- snd_device_free(card, rmidi);
- return -EBUSY;
+ err = -EBUSY;
+ goto free_device;
}
}
if (irq < 0 && !(info_flags & MPU401_INFO_IRQ_HOOK))
@@ -612,6 +612,9 @@ int snd_mpu401_uart_new(struct snd_card *card, int device,
if (rrawmidi)
*rrawmidi = rmidi;
return 0;
+free_device:
+ snd_device_free(card, rmidi);
+ return err;
}

EXPORT_SYMBOL(snd_mpu401_uart_new);
--
2.14.0