ALSA: opti9xx: Allocate resources with device-managed APIs

This patch converts the resource management in ISA als100 driver with
devres as a clean up.  Each manual resource management is converted
with the corresponding devres helper.

This should give no user-visible functional changes.

Link: https://lore.kernel.org/r/20210715075941.23332-68-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/isa/opti9xx/miro.c

@@ -1159,12 +1159,13 @@ static int snd_miro_configure(struct snd_miro *chip)
 	return 0;
 }
 
-static int snd_miro_opti_check(struct snd_miro *chip)
+static int snd_miro_opti_check(struct snd_card *card, struct snd_miro *chip)
 {
 	unsigned char value;
 
-	chip->res_mc_base = request_region(chip->mc_base, chip->mc_base_size,
-					   "OPTi9xx MC");
+	chip->res_mc_base =
+		devm_request_region(card->dev, chip->mc_base,
+				    chip->mc_base_size, "OPTi9xx MC");
 	if (chip->res_mc_base == NULL)
 		return -ENOMEM;
 
@@ -1173,7 +1174,7 @@ static int snd_miro_opti_check(struct snd_miro *chip)
 		if (value == snd_miro_read(chip, OPTi9XX_MC_REG(1)))
 			return 0;
 
-	release_and_free_resource(chip->res_mc_base);
+	devm_release_resource(card->dev, chip->res_mc_base);
 	chip->res_mc_base = NULL;
 
 	return -ENODEV;
@@ -1190,7 +1191,7 @@ static int snd_card_miro_detect(struct snd_card *card,
 		if (err < 0)
 			return err;
 
-		err = snd_miro_opti_check(chip);
+		err = snd_miro_opti_check(card, chip);
 		if (err == 0)
 			return 1;
 	}
@@ -1214,7 +1215,8 @@ static int snd_card_miro_aci_detect(struct snd_card *card,
 	regval=inb(miro->mc_base + 4);
 	aci->aci_port = (regval & 0x10) ? 0x344 : 0x354;
 
-	miro->res_aci_port = request_region(aci->aci_port, 3, "miro aci");
+	miro->res_aci_port =
+		devm_request_region(card->dev, aci->aci_port, 3, "miro aci");
 	if (miro->res_aci_port == NULL) {
 		snd_printk(KERN_ERR "aci i/o area 0x%lx-0x%lx already used.\n", 
 			   aci->aci_port, aci->aci_port+2);
@@ -1253,16 +1255,6 @@ static int snd_card_miro_aci_detect(struct snd_card *card,
 	return 0;
 }
 
-static void snd_card_miro_free(struct snd_card *card)
-{
-	struct snd_miro *miro = card->private_data;
-
-	release_and_free_resource(miro->res_aci_port);
-	if (miro->aci)
-		miro->aci->aci_port = 0;
-	release_and_free_resource(miro->res_mc_base);
-}
-
 static int snd_miro_probe(struct snd_card *card)
 {
 	int error;
@@ -1271,9 +1263,10 @@ static int snd_miro_probe(struct snd_card *card)
 	struct snd_rawmidi *rmidi;
 
 	if (!miro->res_mc_base) {
-		miro->res_mc_base = request_region(miro->mc_base,
-						miro->mc_base_size,
-						"miro (OPTi9xx MC)");
+		miro->res_mc_base = devm_request_region(card->dev,
+							miro->mc_base,
+							miro->mc_base_size,
+							"miro (OPTi9xx MC)");
 		if (miro->res_mc_base == NULL) {
 			snd_printk(KERN_ERR "request for OPTI9xx MC failed\n");
 			return -ENOMEM;
@@ -1408,17 +1401,15 @@ static int snd_miro_isa_probe(struct device *devptr, unsigned int n)
 	struct snd_miro *miro;
 	struct snd_card *card;
 
-	error = snd_card_new(devptr, index, id, THIS_MODULE,
-			     sizeof(struct snd_miro), &card);
+	error = snd_devm_card_new(devptr, index, id, THIS_MODULE,
+				  sizeof(struct snd_miro), &card);
 	if (error < 0)
 		return error;
 
-	card->private_free = snd_card_miro_free;
 	miro = card->private_data;
 
 	error = snd_card_miro_detect(card, miro);
 	if (error < 0) {
-		snd_card_free(card);
 		snd_printk(KERN_ERR "unable to detect OPTi9xx chip\n");
 		return -ENODEV;
 	}
@@ -1426,7 +1417,6 @@ static int snd_miro_isa_probe(struct device *devptr, unsigned int n)
 	if (port == SNDRV_AUTO_PORT) {
 		port = snd_legacy_find_free_ioport(possible_ports, 4);
 		if (port < 0) {
-			snd_card_free(card);
 			snd_printk(KERN_ERR "unable to find a free WSS port\n");
 			return -EBUSY;
 		}
@@ -1435,7 +1425,6 @@ static int snd_miro_isa_probe(struct device *devptr, unsigned int n)
 	if (mpu_port == SNDRV_AUTO_PORT) {
 		mpu_port = snd_legacy_find_free_ioport(possible_mpu_ports, 2);
 		if (mpu_port < 0) {
-			snd_card_free(card);
 			snd_printk(KERN_ERR
 				   "unable to find a free MPU401 port\n");
 			return -EBUSY;
@@ -1445,7 +1434,6 @@ static int snd_miro_isa_probe(struct device *devptr, unsigned int n)
 	if (irq == SNDRV_AUTO_IRQ) {
 		irq = snd_legacy_find_free_irq(possible_irqs);
 		if (irq < 0) {
-			snd_card_free(card);
 			snd_printk(KERN_ERR "unable to find a free IRQ\n");
 			return -EBUSY;
 		}
@@ -1453,7 +1441,6 @@ static int snd_miro_isa_probe(struct device *devptr, unsigned int n)
 	if (mpu_irq == SNDRV_AUTO_IRQ) {
 		mpu_irq = snd_legacy_find_free_irq(possible_mpu_irqs);
 		if (mpu_irq < 0) {
-			snd_card_free(card);
 			snd_printk(KERN_ERR
 				   "unable to find a free MPU401 IRQ\n");
 			return -EBUSY;
@@ -1462,7 +1449,6 @@ static int snd_miro_isa_probe(struct device *devptr, unsigned int n)
 	if (dma1 == SNDRV_AUTO_DMA) {
 		dma1 = snd_legacy_find_free_dma(possible_dma1s);
 		if (dma1 < 0) {
-			snd_card_free(card);
 			snd_printk(KERN_ERR "unable to find a free DMA1\n");
 			return -EBUSY;
 		}
@@ -1470,34 +1456,24 @@ static int snd_miro_isa_probe(struct device *devptr, unsigned int n)
 	if (dma2 == SNDRV_AUTO_DMA) {
 		dma2 = snd_legacy_find_free_dma(possible_dma2s[dma1 % 4]);
 		if (dma2 < 0) {
-			snd_card_free(card);
 			snd_printk(KERN_ERR "unable to find a free DMA2\n");
 			return -EBUSY;
 		}
 	}
 
 	error = snd_miro_probe(card);
-	if (error < 0) {
-		snd_card_free(card);
+	if (error < 0)
 		return error;
-	}
 
 	dev_set_drvdata(devptr, card);
 	return 0;
 }
 
-static void snd_miro_isa_remove(struct device *devptr,
-			       unsigned int dev)
-{
-	snd_card_free(dev_get_drvdata(devptr));
-}
-
 #define DEV_NAME "miro"
 
 static struct isa_driver snd_miro_driver = {
 	.match		= snd_miro_isa_match,
 	.probe		= snd_miro_isa_probe,
-	.remove		= snd_miro_isa_remove,
 	/* FIXME: suspend/resume */
 	.driver		= {
 		.name	= DEV_NAME
@@ -1578,39 +1554,31 @@ static int snd_miro_pnp_probe(struct pnp_card_link *pcard,
 		return -EBUSY;
 	if (!isapnp)
 		return -ENODEV;
-	err = snd_card_new(&pcard->card->dev, index, id, THIS_MODULE,
-			   sizeof(struct snd_miro), &card);
+	err = snd_devm_card_new(&pcard->card->dev, index, id, THIS_MODULE,
+				sizeof(struct snd_miro), &card);
 	if (err < 0)
 		return err;
 
-	card->private_free = snd_card_miro_free;
 	miro = card->private_data;
 
 	err = snd_card_miro_pnp(miro, pcard, pid);
-	if (err) {
-		snd_card_free(card);
+	if (err)
 		return err;
-	}
 
 	/* only miroSOUND PCM20 and PCM12 == OPTi924 */
 	err = snd_miro_init(miro, OPTi9XX_HW_82C924);
-	if (err) {
-		snd_card_free(card);
+	if (err)
 		return err;
-	}
 
-	err = snd_miro_opti_check(miro);
+	err = snd_miro_opti_check(card, miro);
 	if (err) {
 		snd_printk(KERN_ERR "OPTI chip not found\n");
-		snd_card_free(card);
 		return err;
 	}
 
 	err = snd_miro_probe(card);
-	if (err < 0) {
-		snd_card_free(card);
+	if (err < 0)
 		return err;
-	}
 	pnp_set_card_drvdata(pcard, card);
 	snd_miro_pnp_is_probed = 1;
 	return 0;
@@ -1618,8 +1586,6 @@ static int snd_miro_pnp_probe(struct pnp_card_link *pcard,
 
 static void snd_miro_pnp_remove(struct pnp_card_link *pcard)
 {
-	snd_card_free(pnp_get_card_drvdata(pcard));
-	pnp_set_card_drvdata(pcard, NULL);
 	snd_miro_pnp_is_probed = 0;
 }
 

sound/isa/opti9xx/opti92x-ad1848.c

@@ -654,16 +654,18 @@ static irqreturn_t snd_opti93x_interrupt(int irq, void *dev_id)
 
 #endif /* OPTi93X */
 
-static int snd_opti9xx_read_check(struct snd_opti9xx *chip)
+static int snd_opti9xx_read_check(struct snd_card *card,
+				  struct snd_opti9xx *chip)
 {
 	unsigned char value;
 #ifdef OPTi93X
 	unsigned long flags;
 #endif
 
-	chip->res_mc_base = request_region(chip->mc_base, chip->mc_base_size,
-					   "OPTi9xx MC");
-	if (chip->res_mc_base == NULL)
+	chip->res_mc_base =
+		devm_request_region(card->dev, chip->mc_base,
+				    chip->mc_base_size, "OPTi9xx MC");
+	if (!chip->res_mc_base)
 		return -EBUSY;
 #ifndef OPTi93X
 	value = snd_opti9xx_read(chip, OPTi9XX_MC_REG(1));
@@ -671,9 +673,10 @@ static int snd_opti9xx_read_check(struct snd_opti9xx *chip)
 		if (value == snd_opti9xx_read(chip, OPTi9XX_MC_REG(1)))
 			return 0;
 #else	/* OPTi93X */
-	chip->res_mc_indir = request_region(chip->mc_indir_index, 2,
-					    "OPTi93x MC");
-	if (chip->res_mc_indir == NULL)
+	chip->res_mc_indir =
+		devm_request_region(card->dev, chip->mc_indir_index, 2,
+				    "OPTi93x MC");
+	if (!chip->res_mc_indir)
 		return -EBUSY;
 
 	spin_lock_irqsave(&chip->lock, flags);
@@ -686,10 +689,10 @@ static int snd_opti9xx_read_check(struct snd_opti9xx *chip)
 	if (snd_opti9xx_read(chip, OPTi9XX_MC_REG(7)) == 0xff - value)
 		return 0;
 
-	release_and_free_resource(chip->res_mc_indir);
+	devm_release_resource(card->dev, chip->res_mc_indir);
 	chip->res_mc_indir = NULL;
 #endif	/* OPTi93X */
-	release_and_free_resource(chip->res_mc_base);
+	devm_release_resource(card->dev, chip->res_mc_base);
 	chip->res_mc_base = NULL;
 
 	return -ENODEV;
@@ -709,7 +712,7 @@ static int snd_card_opti9xx_detect(struct snd_card *card,
 		if (err < 0)
 			return err;
 
-		err = snd_opti9xx_read_check(chip);
+		err = snd_opti9xx_read_check(card, chip);
 		if (err == 0)
 			return 1;
 #ifdef OPTi93X
@@ -789,22 +792,6 @@ static int snd_card_opti9xx_pnp(struct snd_opti9xx *chip,
 }
 #endif	/* CONFIG_PNP */
 
-static void snd_card_opti9xx_free(struct snd_card *card)
-{
-	struct snd_opti9xx *chip = card->private_data;
-
-	if (chip) {
-#ifdef OPTi93X
-		if (chip->irq > 0) {
-			disable_irq(chip->irq);
-			free_irq(chip->irq, chip);
-		}
-		release_and_free_resource(chip->res_mc_indir);
-#endif
-		release_and_free_resource(chip->res_mc_base);
-	}
-}
-
 static int snd_opti9xx_probe(struct snd_card *card)
 {
 	static const long possible_ports[] = {0x530, 0xe80, 0xf40, 0x604, -1};
@@ -860,8 +847,8 @@ static int snd_opti9xx_probe(struct snd_card *card)
 		return error;
 #endif
 #ifdef OPTi93X
-	error = request_irq(irq, snd_opti93x_interrupt,
-			    0, DEV_NAME" - WSS", chip);
+	error = devm_request_irq(card->dev, irq, snd_opti93x_interrupt,
+				 0, DEV_NAME" - WSS", chip);
 	if (error < 0) {
 		snd_printk(KERN_ERR "opti9xx: can't grab IRQ %d\n", irq);
 		return error;
@@ -931,11 +918,10 @@ static int snd_opti9xx_card_new(struct device *pdev, struct snd_card **cardp)
 	struct snd_card *card;
 	int err;
 
-	err = snd_card_new(pdev, index, id, THIS_MODULE,
-			   sizeof(struct snd_opti9xx), &card);
+	err = snd_devm_card_new(pdev, index, id, THIS_MODULE,
+				sizeof(struct snd_opti9xx), &card);
 	if (err < 0)
 		return err;
-	card->private_free = snd_card_opti9xx_free;
 	*cardp = card;
 	return 0;
 }
@@ -1012,25 +998,15 @@ static int snd_opti9xx_isa_probe(struct device *devptr,
 		return error;
 
 	error = snd_card_opti9xx_detect(card, card->private_data);
-	if (error < 0) {
-		snd_card_free(card);
+	if (error < 0)
 		return error;
-	}
 	error = snd_opti9xx_probe(card);
-	if (error < 0) {
-		snd_card_free(card);
+	if (error < 0)
 		return error;
-	}
 	dev_set_drvdata(devptr, card);
 	return 0;
 }
 
-static void snd_opti9xx_isa_remove(struct device *devptr,
-				   unsigned int dev)
-{
-	snd_card_free(dev_get_drvdata(devptr));
-}
-
 #ifdef CONFIG_PM
 static int snd_opti9xx_suspend(struct snd_card *card)
 {
@@ -1075,7 +1051,6 @@ static int snd_opti9xx_isa_resume(struct device *dev, unsigned int n)
 static struct isa_driver snd_opti9xx_driver = {
 	.match		= snd_opti9xx_isa_match,
 	.probe		= snd_opti9xx_isa_probe,
-	.remove		= snd_opti9xx_isa_remove,
 #ifdef CONFIG_PM
 	.suspend	= snd_opti9xx_isa_suspend,
 	.resume		= snd_opti9xx_isa_resume,
@@ -1114,26 +1089,19 @@ static int snd_opti9xx_pnp_probe(struct pnp_card_link *pcard,
 		hw = OPTi9XX_HW_82C931;
 		break;
 	default:
-		snd_card_free(card);
 		return -ENODEV;
 	}
 
 	error = snd_opti9xx_init(chip, hw);
-	if (error) {
-		snd_card_free(card);
+	if (error)
 		return error;
-	}
-	error = snd_opti9xx_read_check(chip);
-	if (error) {
+	error = snd_opti9xx_read_check(card, chip);
+	if (error)
 		snd_printk(KERN_ERR "OPTI chip not found\n");
-		snd_card_free(card);
 		return error;
-	}
 	error = snd_opti9xx_probe(card);
-	if (error < 0) {
-		snd_card_free(card);
+	if (error < 0)
 		return error;
-	}
 	pnp_set_card_drvdata(pcard, card);
 	snd_opti9xx_pnp_is_probed = 1;
 	return 0;
@@ -1141,8 +1109,6 @@ static int snd_opti9xx_pnp_probe(struct pnp_card_link *pcard,
 
 static void snd_opti9xx_pnp_remove(struct pnp_card_link *pcard)
 {
-	snd_card_free(pnp_get_card_drvdata(pcard));
-	pnp_set_card_drvdata(pcard, NULL);
 	snd_opti9xx_pnp_is_probed = 0;
 }