This patch converts the resource management in serial u16550 driver
with devres as a clean up. Each manual resource management is
converted with the corresponding devres helper, and the card object
release is managed now via card->private_free instead of a lowlevel
snd_device.
This should give no user-visible functional changes.
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---
sound/drivers/serial-u16550.c | 57 ++++++-----------------------------
1 file changed, 9 insertions(+), 48 deletions(-)
diff --git a/sound/drivers/serial-u16550.c b/sound/drivers/serial-u16550.c
index da9983cba01c..d3bb5d177569 100644
--- a/sound/drivers/serial-u16550.c
+++ b/sound/drivers/serial-u16550.c
@@ -115,7 +115,6 @@ struct snd_uart16550 {
int irq;
unsigned long base;
- struct resource *res_base;
unsigned int speed;
unsigned int speed_base;
@@ -323,8 +322,7 @@ static int snd_uart16550_detect(struct snd_uart16550 *uart)
return -ENODEV; /* Not configured */
}
- uart->res_base = request_region(io_base, 8, "Serial MIDI");
- if (uart->res_base == NULL) {
+ if (!devm_request_region(uart->card->dev, io_base, 8, "Serial MIDI")) {
snd_printk(KERN_ERR "u16550: can't grab port 0x%lx\n", io_base);
return -EBUSY;
}
@@ -752,21 +750,6 @@ static const struct snd_rawmidi_ops snd_uart16550_input =
.trigger = snd_uart16550_input_trigger,
};
-static int snd_uart16550_free(struct snd_uart16550 *uart)
-{
- if (uart->irq >= 0)
- free_irq(uart->irq, uart);
- release_and_free_resource(uart->res_base);
- kfree(uart);
- return 0;
-};
-
-static int snd_uart16550_dev_free(struct snd_device *device)
-{
- struct snd_uart16550 *uart = device->device_data;
- return snd_uart16550_free(uart);
-}
-
static int snd_uart16550_create(struct snd_card *card,
unsigned long iobase,
int irq,
@@ -776,14 +759,11 @@ static int snd_uart16550_create(struct snd_card *card,
int droponfull,
struct snd_uart16550 **ruart)
{
- static const struct snd_device_ops ops = {
- .dev_free = snd_uart16550_dev_free,
- };
struct snd_uart16550 *uart;
int err;
- uart = kzalloc(sizeof(*uart), GFP_KERNEL);
+ uart = devm_kzalloc(sizeof(*uart), GFP_KERNEL);
if (!uart)
return -ENOMEM;
uart->adaptor = adaptor;
@@ -796,13 +776,12 @@ static int snd_uart16550_create(struct snd_card *card,
err = snd_uart16550_detect(uart);
if (err <= 0) {
printk(KERN_ERR "no UART detected at 0x%lx\n", iobase);
- snd_uart16550_free(uart);
return -ENODEV;
}
if (irq >= 0 && irq != SNDRV_AUTO_IRQ) {
- if (request_irq(irq, snd_uart16550_interrupt,
- 0, "Serial MIDI", uart)) {
+ if (devm_request_irq(card->dev, irq, snd_uart16550_interrupt,
+ 0, "Serial MIDI", uart)) {
snd_printk(KERN_WARNING
"irq %d busy. Using Polling.\n", irq);
} else {
@@ -819,13 +798,6 @@ static int snd_uart16550_create(struct snd_card *card,
timer_setup(&uart->buffer_timer, snd_uart16550_buffer_timer, 0);
uart->timer_running = 0;
- /* Register device */
- err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, uart, &ops);
- if (err < 0) {
- snd_uart16550_free(uart);
- return err;
- }
-
switch (uart->adaptor) {
case SNDRV_SERIAL_MS124W_SA:
case SNDRV_SERIAL_MS124W_MB:
@@ -927,8 +899,8 @@ static int snd_serial_probe(struct platform_device *devptr)
return -ENODEV;
}
- err = snd_card_new(&devptr->dev, index[dev], id[dev], THIS_MODULE,
- 0, &card);
+ err = snd_devm_card_new(&devptr->dev, index[dev], id[dev], THIS_MODULE,
+ 0, &card);
if (err < 0)
return err;
@@ -939,11 +911,11 @@ static int snd_serial_probe(struct platform_device *devptr)
base[dev], adaptor[dev], droponfull[dev],
&uart);
if (err < 0)
- goto _err;
+ return err;
err = snd_uart16550_rmidi(uart, 0, outs[dev], ins[dev], &uart->rmidi);
if (err < 0)
- goto _err;
+ return err;
sprintf(card->longname, "%s [%s] at %#lx, irq %d",
card->shortname,
@@ -953,27 +925,16 @@ static int snd_serial_probe(struct platform_device *devptr)
err = snd_card_register(card);
if (err < 0)
- goto _err;
+ return err;
platform_set_drvdata(devptr, card);
return 0;
-
- _err:
- snd_card_free(card);
- return err;
-}
-
-static int snd_serial_remove(struct platform_device *devptr)
-{
- snd_card_free(platform_get_drvdata(devptr));
- return 0;
}
#define SND_SERIAL_DRIVER "snd_serial_u16550"
static struct platform_driver snd_serial_driver = {
.probe = snd_serial_probe,
- .remove = snd_serial_remove,
.driver = {
.name = SND_SERIAL_DRIVER,
},
--
2.26.2
