diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/max732x.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpio/max732x.c b/drivers/gpio/max732x.c index 26ff401..9cad60f 100644 --- a/drivers/gpio/max732x.c +++ b/drivers/gpio/max732x.c @@ -232,6 +232,13 @@ static int max732x_gpio_direction_input(struct gpio_chip *gc, unsigned off) return -EACCES; } + /* + * Open-drain pins must be set to high impedance (which is + * equivalent to output-high) to be turned into an input. + */ + if ((mask & chip->dir_output)) + max732x_gpio_set_value(gc, off, 1); + return 0; } |
