[PATCH] ALSA: es1688: Avoid devres management for es1688 object creation

[Takashi Iwai <tiwai@xxxxxxx>]

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: 1bb11c1c7f6e ("ALSA: es1688: Allocate resources with device-managed APIs")
Reported-by: kernel test robot <oliver.sang@xxxxxxxxx>
Link: https://lore.kernel.org/r/20210805032513.GA30485@xsang-OptiPlex-9020
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---
 include/sound/es1688.h        |  1 +
 sound/isa/es1688/es1688_lib.c | 29 ++++++++++++++++++++---------
 2 files changed, 21 insertions(+), 9 deletions(-)

diff --git a/include/sound/es1688.h b/include/sound/es1688.h
index da577bbf9cc7..099569c31fbb 100644
--- 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
index 9cd66b236cef..8554cb2263c1 100644
--- 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;
 }
 
-- 
2.26.2