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-rw-r--r--drivers/input/keyboard/gpio_keys.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index 1df4507c4c0b..9d517ca7eb5a 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -239,6 +239,11 @@ static ssize_t gpio_keys_attr_store_helper(struct gpio_keys_drvdata *ddata,
}
}
+ if (i == ddata->pdata->nbuttons) {
+ error = -EINVAL;
+ goto out;
+ }
+
mutex_lock(&ddata->disable_lock);
for (i = 0; i < ddata->pdata->nbuttons; i++) {