diff options
Diffstat (limited to 'drivers/auxdisplay/charlcd.c')
| -rw-r--r-- | drivers/auxdisplay/charlcd.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/auxdisplay/charlcd.c b/drivers/auxdisplay/charlcd.c index 304accde365c..6d309e4971b6 100644 --- a/drivers/auxdisplay/charlcd.c +++ b/drivers/auxdisplay/charlcd.c @@ -37,7 +37,7 @@ struct charlcd_priv { bool must_clear; /* contains the LCD config state */ - unsigned long int flags; + unsigned long flags; /* Current escape sequence and it's length or -1 if outside */ struct { @@ -578,6 +578,9 @@ static int charlcd_init(struct charlcd *lcd) * Since charlcd_init_display() needs to write data, we have to * enable mark the LCD initialized just before. */ + if (WARN_ON(!lcd->ops->init_display)) + return -EINVAL; + ret = lcd->ops->init_display(lcd); if (ret) return ret; |