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ALSA: aoa: Fix I2S device accounting

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[ Upstream commit f1fae475f1 ]

i2sbus_add_dev() is supposed to return the number of probed devices,
i.e. either 1 or 0.  However, i2sbus_add_dev() has one error handling
that returns -ENODEV; this will screw up the accumulation number
counted in the caller, i2sbus_probe().

Fix the return value to 0 and add the comment for better understanding
for readers.

Fixes: f3d9478b2c ("[ALSA] snd-aoa: add snd-aoa")
Link: https://lore.kernel.org/r/20221027065233.13292-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Takashi Iwai 2022-10-27 08:52:33 +02:00 committed by Greg Kroah-Hartman
parent 5bdea67453
commit 0667bb6000
1 changed files with 2 additions and 1 deletions
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3
sound/aoa/soundbus/i2sbus/core.c
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@ -147,6 +147,7 @@ static int i2sbus_get_and_fixup_rsrc(struct device_node *np, int index,
return rc;
}
/* Returns 1 if added, 0 for otherwise; don't return a negative value! */
/* FIXME: look at device node refcounting */
static int i2sbus_add_dev(struct macio_dev *macio,
struct i2sbus_control *control,
@ -213,7 +214,7 @@ static int i2sbus_add_dev(struct macio_dev *macio,
* either as the second one in that case is just a modem. */
if (!ok) {
kfree(dev);
return -ENODEV;
return 0;
}
mutex_init(&dev->lock);