ALSA: es1688: Avoid devres management for es1688 object creation

The recent refactoring of es1688 object creation with the use of devres caused a problem with the non-PnP probe of GUS driver, as it tries to probe multiple times with different parameters That is, this object needs the immediate resource release and the devres doesn't fit for it. This patch reverts partially the commit for restoring the classic resource management for es1688 object. Fixes: 1bb11c1 ("ALSA: es1688: Allocate resources with device-managed APIs") Reported-by: kernel test robot <[email protected]> Link: https://lore.kernel.org/r/20210805032513.GA30485@xsang-OptiPlex-9020 Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Takashi Iwai <[email protected]>
ambv · Aug 5, 2021 · df8bcf3 · df8bcf3
1 parent ddddc0d
commit df8bcf3
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Showing 2 changed files with 21 additions and 9 deletions.
diff --git a/include/sound/es1688.h b/include/sound/es1688.h
@@ -18,6 +18,7 @@
 
 struct snd_es1688 {
 	unsigned long port;		/* port of ESS chip */
+	struct resource *res_port;
 	unsigned long mpu_port;		/* MPU-401 port of ESS chip */
 	int irq;			/* IRQ number of ESS chip */
 	int mpu_irq;			/* MPU IRQ */

diff --git a/sound/isa/es1688/es1688_lib.c b/sound/isa/es1688/es1688_lib.c
@@ -580,6 +580,13 @@ static int snd_es1688_free(struct snd_es1688 *chip)
 {
 	if (chip->hardware != ES1688_HW_UNDEF)
 		snd_es1688_init(chip, 0);
+	release_and_free_resource(chip->res_port);
+	if (chip->irq >= 0)
+		free_irq(chip->irq, (void *) chip);
+	if (chip->dma8 >= 0) {
+		disable_dma(chip->dma8);
+		free_dma(chip->dma8);
+	}
 	return 0;
 }
 
@@ -617,25 +624,26 @@ int snd_es1688_create(struct snd_card *card,
 	chip->dma8 = -1;
 	chip->hardware = ES1688_HW_UNDEF;
 
-	if (!devm_request_region(card->dev, port + 4, 12, "ES1688")) {
+	chip->res_port = request_region(port + 4, 12, "ES1688");
+	if (chip->res_port == NULL) {
 		snd_printk(KERN_ERR "es1688: can't grab port 0x%lx\n", port + 4);
-		return -EBUSY;
+		err = -EBUSY;
+		goto exit;
 	}
 
-	err = devm_request_irq(card->dev, irq, snd_es1688_interrupt, 0,
-			       "ES1688", (void *) chip);
+	err = request_irq(irq, snd_es1688_interrupt, 0, "ES1688", (void *) chip);
 	if (err < 0) {
 		snd_printk(KERN_ERR "es1688: can't grab IRQ %d\n", irq);
-		return err;
+		goto exit;
 	}
 
 	chip->irq = irq;
 	card->sync_irq = chip->irq;
-	err = snd_devm_request_dma(card->dev, dma8, "ES1688");
+	err = request_dma(dma8, "ES1688");
 
 	if (err < 0) {
 		snd_printk(KERN_ERR "es1688: can't grab DMA8 %d\n", dma8);
-		return err;
+		goto exit;
 	}
 	chip->dma8 = dma8;
 
@@ -651,14 +659,17 @@ int snd_es1688_create(struct snd_card *card,
 
 	err = snd_es1688_probe(chip);
 	if (err < 0)
-		return err;
+		goto exit;
 
 	err = snd_es1688_init(chip, 1);
 	if (err < 0)
-		return err;
+		goto exit;
 
 	/* Register device */
 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
+exit:
+	if (err)
+		snd_es1688_free(chip);
 	return err;
 }