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@suse.de --- 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..3cbc7a4adcb4 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(card->dev, 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, },