From bddc2ef1323588caa69b6b806c193db4d1f97dad Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 15 Jul 2021 09:59:32 +0200 Subject: ALSA: sscape: Allocate resources with device-managed APIs This patch converts the resource management in ISA sscape driver with devres as a clean up. Each manual resource management is converted with the corresponding devres helper. The remove callback became superfluous and dropped. This should give no user-visible functional changes. Link: https://lore.kernel.org/r/20210715075941.23332-71-tiwai@suse.de Signed-off-by: Takashi Iwai --- sound/isa/sscape.c | 92 ++++++++++++------------------------------------------ 1 file changed, 20 insertions(+), 72 deletions(-) (limited to 'sound/isa') diff --git a/sound/isa/sscape.c b/sound/isa/sscape.c index e70ef9aee545..0bc0025f7c19 100644 --- a/sound/isa/sscape.c +++ b/sound/isa/sscape.c @@ -327,17 +327,6 @@ static void activate_ad1845_unsafe(unsigned io_base) sscape_write_unsafe(io_base, GA_CDCFG_REG, 0x80); } -/* - * Do the necessary ALSA-level cleanup to deallocate our driver ... - */ -static void soundscape_free(struct snd_card *c) -{ - struct soundscape *sscape = get_card_soundscape(c); - release_and_free_resource(sscape->io_res); - release_and_free_resource(sscape->wss_res); - free_dma(sscape->chip->dma1); -} - /* * Tell the SoundScape to begin a DMA transfer using the given channel. * All locking issues are left to the caller. @@ -941,7 +930,7 @@ static int create_sscape(int dev, struct snd_card *card) * Grab IO ports that we will need to probe so that we * can detect and control this hardware ... */ - io_res = request_region(port[dev], 8, "SoundScape"); + io_res = devm_request_region(card->dev, port[dev], 8, "SoundScape"); if (!io_res) { snd_printk(KERN_ERR "sscape: can't grab port 0x%lx\n", port[dev]); @@ -949,22 +938,22 @@ static int create_sscape(int dev, struct snd_card *card) } wss_res = NULL; if (sscape->type == SSCAPE_VIVO) { - wss_res = request_region(wss_port[dev], 4, "SoundScape"); + wss_res = devm_request_region(card->dev, wss_port[dev], 4, + "SoundScape"); if (!wss_res) { snd_printk(KERN_ERR "sscape: can't grab port 0x%lx\n", wss_port[dev]); - err = -EBUSY; - goto _release_region; + return -EBUSY; } } /* * Grab one DMA channel ... */ - err = request_dma(dma[dev], "SoundScape"); + err = snd_devm_request_dma(card->dev, dma[dev], "SoundScape"); if (err < 0) { snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", dma[dev]); - goto _release_region; + return err; } spin_lock_init(&sscape->lock); @@ -975,8 +964,7 @@ static int create_sscape(int dev, struct snd_card *card) if (!detect_sscape(sscape, wss_port[dev])) { printk(KERN_ERR "sscape: hardware not detected at 0x%x\n", sscape->io_base); - err = -ENODEV; - goto _release_dma; + return -ENODEV; } switch (sscape->type) { @@ -1006,15 +994,13 @@ static int create_sscape(int dev, struct snd_card *card) irq_cfg = get_irq_config(sscape->type, irq[dev]); if (irq_cfg == INVALID_IRQ) { snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", irq[dev]); - err = -ENXIO; - goto _release_dma; + return -ENXIO; } mpu_irq_cfg = get_irq_config(sscape->type, mpu_irq[dev]); if (mpu_irq_cfg == INVALID_IRQ) { snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", mpu_irq[dev]); - err = -ENXIO; - goto _release_dma; + return -ENXIO; } /* @@ -1060,7 +1046,7 @@ static int create_sscape(int dev, struct snd_card *card) snd_printk(KERN_ERR "sscape: No AD1845 device at 0x%lx, IRQ %d\n", wss_port[dev], irq[dev]); - goto _release_dma; + return err; } strcpy(card->driver, "SoundScape"); strcpy(card->shortname, name); @@ -1082,7 +1068,7 @@ static int create_sscape(int dev, struct snd_card *card) snd_printk(KERN_ERR "sscape: Failed to create " "MPU-401 device at 0x%lx\n", port[dev]); - goto _release_dma; + return err; } /* @@ -1109,24 +1095,7 @@ static int create_sscape(int dev, struct snd_card *card) } } - /* - * Now that we have successfully created this sound card, - * it is safe to store the pointer. - * NOTE: we only register the sound card's "destructor" - * function now that our "constructor" has completed. - */ - card->private_free = soundscape_free; - return 0; - -_release_dma: - free_dma(dma[dev]); - -_release_region: - release_and_free_resource(wss_res); - release_and_free_resource(io_res); - - return err; } @@ -1156,8 +1125,8 @@ static int snd_sscape_probe(struct device *pdev, unsigned int dev) struct soundscape *sscape; int ret; - ret = snd_card_new(pdev, index[dev], id[dev], THIS_MODULE, - sizeof(struct soundscape), &card); + ret = snd_devm_card_new(pdev, index[dev], id[dev], THIS_MODULE, + sizeof(struct soundscape), &card); if (ret < 0) return ret; @@ -1168,24 +1137,15 @@ static int snd_sscape_probe(struct device *pdev, unsigned int dev) ret = create_sscape(dev, card); if (ret < 0) - goto _release_card; + return ret; ret = snd_card_register(card); if (ret < 0) { snd_printk(KERN_ERR "sscape: Failed to register sound card\n"); - goto _release_card; + return ret; } dev_set_drvdata(pdev, card); return 0; - -_release_card: - snd_card_free(card); - return ret; -} - -static void snd_sscape_remove(struct device *devptr, unsigned int dev) -{ - snd_card_free(dev_get_drvdata(devptr)); } #define DEV_NAME "sscape" @@ -1193,7 +1153,6 @@ static void snd_sscape_remove(struct device *devptr, unsigned int dev) static struct isa_driver snd_sscape_driver = { .match = snd_sscape_match, .probe = snd_sscape_probe, - .remove = snd_sscape_remove, /* FIXME: suspend/resume */ .driver = { .name = DEV_NAME @@ -1244,9 +1203,9 @@ static int sscape_pnp_detect(struct pnp_card_link *pcard, * Create a new ALSA sound card entry, in anticipation * of detecting our hardware ... */ - ret = snd_card_new(&pcard->card->dev, - index[idx], id[idx], THIS_MODULE, - sizeof(struct soundscape), &card); + ret = snd_devm_card_new(&pcard->card->dev, + index[idx], id[idx], THIS_MODULE, + sizeof(struct soundscape), &card); if (ret < 0) return ret; @@ -1277,27 +1236,17 @@ static int sscape_pnp_detect(struct pnp_card_link *pcard, ret = create_sscape(idx, card); if (ret < 0) - goto _release_card; + return ret; ret = snd_card_register(card); if (ret < 0) { snd_printk(KERN_ERR "sscape: Failed to register sound card\n"); - goto _release_card; + return ret; } pnp_set_card_drvdata(pcard, card); ++idx; return 0; - -_release_card: - snd_card_free(card); - return ret; -} - -static void sscape_pnp_remove(struct pnp_card_link *pcard) -{ - snd_card_free(pnp_get_card_drvdata(pcard)); - pnp_set_card_drvdata(pcard, NULL); } static struct pnp_card_driver sscape_pnpc_driver = { @@ -1305,7 +1254,6 @@ static struct pnp_card_driver sscape_pnpc_driver = { .name = "sscape", .id_table = sscape_pnpids, .probe = sscape_pnp_detect, - .remove = sscape_pnp_remove, }; #endif /* CONFIG_PNP */ -- cgit v1.2.3