From: Takashi Iwai <tiwai@xxxxxxx>
[ Upstream commit f1fae475f10a26b7e34da4ff2e2f19b7feb3548e ]
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: f3d9478b2ce4 ("[ALSA] snd-aoa: add snd-aoa")
Link: https://lore.kernel.org/r/20221027065233.13292-1-tiwai@xxxxxxx
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
sound/aoa/soundbus/i2sbus/core.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sound/aoa/soundbus/i2sbus/core.c b/sound/aoa/soundbus/i2sbus/core.c
index c016df586992..2811e1f1e2fa 100644
--- a/sound/aoa/soundbus/i2sbus/core.c
+++ b/sound/aoa/soundbus/i2sbus/core.c
@@ -148,6 +148,7 @@ 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);
--
2.35.1
