If registering the platform device fails, the lookup table is
removed in the error path. On module removal we would try to
remove the lookup table again. Fix this by setting priv->lookup
only if registering the platform device was successful.
In addition free the memory allocated for the lookup table in
the error path.
Fixes: d308dfbf62ef ("i2c: mux/i801: Switch to use descriptor passing")
Cc: stable@xxxxxxxxxxxxxxx
Reviewed-by: Andi Shyti <andi.shyti@xxxxxxxxxx>
Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
---
v2:
- cc stable
- free memory allocated for the lookup table
v3:
- cc'ed Linus
---
drivers/i2c/busses/i2c-i801.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 291c609d1..9c624f31c 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -1428,7 +1428,6 @@ static void i801_add_mux(struct i801_priv *priv)
lookup->table[i] = GPIO_LOOKUP(mux_config->gpio_chip,
mux_config->gpios[i], "mux", 0);
gpiod_add_lookup_table(lookup);
- priv->lookup = lookup;
/*
* Register the mux device, we use PLATFORM_DEVID_NONE here
@@ -1442,7 +1441,10 @@ static void i801_add_mux(struct i801_priv *priv)
sizeof(struct i2c_mux_gpio_platform_data));
if (IS_ERR(priv->mux_pdev)) {
gpiod_remove_lookup_table(lookup);
+ devm_kfree(dev, lookup);
dev_err(dev, "Failed to register i2c-mux-gpio device\n");
+ } else {
+ priv->lookup = lookup;
}
}
--
2.44.0
