This patch converts the card object management with devres as a clean
up. The remove callback gets reduced by that.
This should give no user-visible functional changes.
Note that this converts only the mpu401 card driver. The mpu401_uart
component is still managed with snd_device. It's for the case where
the mpu401_uart component may be removed dynamically without the
actual device unbind.
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---
sound/drivers/mpu401/mpu401.c | 33 +++++----------------------------
1 file changed, 5 insertions(+), 28 deletions(-)
diff --git a/sound/drivers/mpu401/mpu401.c b/sound/drivers/mpu401/mpu401.c
index d0b55dbb411a..66b94f73956f 100644
--- a/sound/drivers/mpu401/mpu401.c
+++ b/sound/drivers/mpu401/mpu401.c
@@ -59,8 +59,8 @@ static int snd_mpu401_create(struct device *devptr, int dev,
snd_printk(KERN_ERR "the uart_enter option is obsolete; remove it\n");
*rcard = NULL;
- err = snd_card_new(devptr, index[dev], id[dev], THIS_MODULE,
- 0, &card);
+ err = snd_devm_card_new(devptr, index[dev], id[dev], THIS_MODULE,
+ 0, &card);
if (err < 0)
return err;
strcpy(card->driver, "MPU-401 UART");
@@ -76,15 +76,11 @@ static int snd_mpu401_create(struct device *devptr, int dev,
irq[dev], NULL);
if (err < 0) {
printk(KERN_ERR "MPU401 not detected at 0x%lx\n", port[dev]);
- goto _err;
+ return err;
}
*rcard = card;
return 0;
-
- _err:
- snd_card_free(card);
- return err;
}
static int snd_mpu401_probe(struct platform_device *devptr)
@@ -105,20 +101,12 @@ static int snd_mpu401_probe(struct platform_device *devptr)
if (err < 0)
return err;
err = snd_card_register(card);
- if (err < 0) {
- snd_card_free(card);
+ if (err < 0)
return err;
- }
platform_set_drvdata(devptr, card);
return 0;
}
-static int snd_mpu401_remove(struct platform_device *devptr)
-{
- snd_card_free(platform_get_drvdata(devptr));
- return 0;
-}
-
#define SND_MPU401_DRIVER "snd_mpu401"
static struct platform_driver snd_mpu401_driver = {
@@ -184,10 +172,8 @@ static int snd_mpu401_pnp_probe(struct pnp_dev *pnp_dev,
if (err < 0)
return err;
err = snd_card_register(card);
- if (err < 0) {
- snd_card_free(card);
+ if (err < 0)
return err;
- }
pnp_set_drvdata(pnp_dev, card);
snd_mpu401_devices++;
++dev;
@@ -196,19 +182,10 @@ static int snd_mpu401_pnp_probe(struct pnp_dev *pnp_dev,
return -ENODEV;
}
-static void snd_mpu401_pnp_remove(struct pnp_dev *dev)
-{
- struct snd_card *card = (struct snd_card *) pnp_get_drvdata(dev);
-
- snd_card_disconnect(card);
- snd_card_free_when_closed(card);
-}
-
static struct pnp_driver snd_mpu401_pnp_driver = {
.name = "mpu401",
.id_table = snd_mpu401_pnpids,
.probe = snd_mpu401_pnp_probe,
- .remove = snd_mpu401_pnp_remove,
};
#else
static struct pnp_driver snd_mpu401_pnp_driver;
--
2.26.2
