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i2c: i801: Fix the i2c-mux gpiod_lookup_table not being properly terminated

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commit 0b3ea2a06d upstream.

gpiod_add_lookup_table() expects the gpiod_lookup_table->table passed to
it to be terminated with a zero-ed out entry.

So we need to allocate one more entry then we will use.

Fixes: d308dfbf62 ("i2c: mux/i801: Switch to use descriptor passing")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hans de Goede 2020-12-21 14:42:25 +01:00 committed by Greg Kroah-Hartman
parent 12e8bcaef6
commit 55503711ad
1 changed files with 1 additions and 1 deletions
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2
drivers/i2c/busses/i2c-i801.c
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@ -1424,7 +1424,7 @@ static int i801_add_mux(struct i801_priv *priv)
/* Register GPIO descriptor lookup table */
lookup = devm_kzalloc(dev,
struct_size(lookup, table, mux_config->n_gpios),
struct_size(lookup, table, mux_config->n_gpios + 1),
GFP_KERNEL);
if (!lookup)
return -ENOMEM;