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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 <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
parent
111601ff76
commit
bddc2ef132
@ -327,17 +327,6 @@ static void activate_ad1845_unsafe(unsigned io_base)
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sscape_write_unsafe(io_base, GA_CDCFG_REG, 0x80);
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}
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/*
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* Do the necessary ALSA-level cleanup to deallocate our driver ...
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*/
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static void soundscape_free(struct snd_card *c)
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{
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struct soundscape *sscape = get_card_soundscape(c);
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release_and_free_resource(sscape->io_res);
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release_and_free_resource(sscape->wss_res);
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free_dma(sscape->chip->dma1);
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}
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/*
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* Tell the SoundScape to begin a DMA transfer using the given channel.
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* All locking issues are left to the caller.
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@ -941,7 +930,7 @@ static int create_sscape(int dev, struct snd_card *card)
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* Grab IO ports that we will need to probe so that we
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* can detect and control this hardware ...
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*/
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io_res = request_region(port[dev], 8, "SoundScape");
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io_res = devm_request_region(card->dev, port[dev], 8, "SoundScape");
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if (!io_res) {
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snd_printk(KERN_ERR
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"sscape: can't grab port 0x%lx\n", port[dev]);
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@ -949,22 +938,22 @@ static int create_sscape(int dev, struct snd_card *card)
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}
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wss_res = NULL;
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if (sscape->type == SSCAPE_VIVO) {
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wss_res = request_region(wss_port[dev], 4, "SoundScape");
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wss_res = devm_request_region(card->dev, wss_port[dev], 4,
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"SoundScape");
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if (!wss_res) {
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snd_printk(KERN_ERR "sscape: can't grab port 0x%lx\n",
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wss_port[dev]);
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err = -EBUSY;
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goto _release_region;
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return -EBUSY;
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}
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}
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/*
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* Grab one DMA channel ...
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*/
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err = request_dma(dma[dev], "SoundScape");
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err = snd_devm_request_dma(card->dev, dma[dev], "SoundScape");
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if (err < 0) {
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snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", dma[dev]);
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goto _release_region;
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return err;
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}
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spin_lock_init(&sscape->lock);
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@ -975,8 +964,7 @@ static int create_sscape(int dev, struct snd_card *card)
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if (!detect_sscape(sscape, wss_port[dev])) {
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printk(KERN_ERR "sscape: hardware not detected at 0x%x\n",
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sscape->io_base);
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err = -ENODEV;
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goto _release_dma;
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return -ENODEV;
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}
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switch (sscape->type) {
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@ -1006,15 +994,13 @@ static int create_sscape(int dev, struct snd_card *card)
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irq_cfg = get_irq_config(sscape->type, irq[dev]);
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if (irq_cfg == INVALID_IRQ) {
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snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", irq[dev]);
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err = -ENXIO;
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goto _release_dma;
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return -ENXIO;
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}
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mpu_irq_cfg = get_irq_config(sscape->type, mpu_irq[dev]);
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if (mpu_irq_cfg == INVALID_IRQ) {
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snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", mpu_irq[dev]);
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err = -ENXIO;
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goto _release_dma;
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return -ENXIO;
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}
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/*
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@ -1060,7 +1046,7 @@ static int create_sscape(int dev, struct snd_card *card)
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snd_printk(KERN_ERR
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"sscape: No AD1845 device at 0x%lx, IRQ %d\n",
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wss_port[dev], irq[dev]);
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goto _release_dma;
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return err;
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}
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strcpy(card->driver, "SoundScape");
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strcpy(card->shortname, name);
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@ -1082,7 +1068,7 @@ static int create_sscape(int dev, struct snd_card *card)
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snd_printk(KERN_ERR "sscape: Failed to create "
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"MPU-401 device at 0x%lx\n",
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port[dev]);
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goto _release_dma;
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return err;
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}
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/*
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@ -1109,24 +1095,7 @@ static int create_sscape(int dev, struct snd_card *card)
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}
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}
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/*
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* Now that we have successfully created this sound card,
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* it is safe to store the pointer.
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* NOTE: we only register the sound card's "destructor"
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* function now that our "constructor" has completed.
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*/
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card->private_free = soundscape_free;
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return 0;
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_release_dma:
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free_dma(dma[dev]);
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_release_region:
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release_and_free_resource(wss_res);
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release_and_free_resource(io_res);
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return err;
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}
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@ -1156,8 +1125,8 @@ static int snd_sscape_probe(struct device *pdev, unsigned int dev)
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struct soundscape *sscape;
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int ret;
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ret = snd_card_new(pdev, index[dev], id[dev], THIS_MODULE,
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sizeof(struct soundscape), &card);
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ret = snd_devm_card_new(pdev, index[dev], id[dev], THIS_MODULE,
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sizeof(struct soundscape), &card);
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if (ret < 0)
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return ret;
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@ -1168,24 +1137,15 @@ static int snd_sscape_probe(struct device *pdev, unsigned int dev)
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ret = create_sscape(dev, card);
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if (ret < 0)
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goto _release_card;
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return ret;
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ret = snd_card_register(card);
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if (ret < 0) {
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snd_printk(KERN_ERR "sscape: Failed to register sound card\n");
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goto _release_card;
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return ret;
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}
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dev_set_drvdata(pdev, card);
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return 0;
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_release_card:
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snd_card_free(card);
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return ret;
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}
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static void snd_sscape_remove(struct device *devptr, unsigned int dev)
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{
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snd_card_free(dev_get_drvdata(devptr));
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}
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#define DEV_NAME "sscape"
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@ -1193,7 +1153,6 @@ static void snd_sscape_remove(struct device *devptr, unsigned int dev)
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static struct isa_driver snd_sscape_driver = {
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.match = snd_sscape_match,
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.probe = snd_sscape_probe,
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.remove = snd_sscape_remove,
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/* FIXME: suspend/resume */
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.driver = {
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.name = DEV_NAME
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@ -1244,9 +1203,9 @@ static int sscape_pnp_detect(struct pnp_card_link *pcard,
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* Create a new ALSA sound card entry, in anticipation
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* of detecting our hardware ...
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*/
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ret = snd_card_new(&pcard->card->dev,
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index[idx], id[idx], THIS_MODULE,
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sizeof(struct soundscape), &card);
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ret = snd_devm_card_new(&pcard->card->dev,
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index[idx], id[idx], THIS_MODULE,
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sizeof(struct soundscape), &card);
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if (ret < 0)
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return ret;
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@ -1277,27 +1236,17 @@ static int sscape_pnp_detect(struct pnp_card_link *pcard,
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ret = create_sscape(idx, card);
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if (ret < 0)
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goto _release_card;
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return ret;
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ret = snd_card_register(card);
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if (ret < 0) {
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snd_printk(KERN_ERR "sscape: Failed to register sound card\n");
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goto _release_card;
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return ret;
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}
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pnp_set_card_drvdata(pcard, card);
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++idx;
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return 0;
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_release_card:
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snd_card_free(card);
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return ret;
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}
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static void sscape_pnp_remove(struct pnp_card_link *pcard)
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{
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snd_card_free(pnp_get_card_drvdata(pcard));
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pnp_set_card_drvdata(pcard, NULL);
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}
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static struct pnp_card_driver sscape_pnpc_driver = {
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@ -1305,7 +1254,6 @@ static struct pnp_card_driver sscape_pnpc_driver = {
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.name = "sscape",
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.id_table = sscape_pnpids,
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.probe = sscape_pnp_detect,
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.remove = sscape_pnp_remove,
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};
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#endif /* CONFIG_PNP */
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