diff options
Diffstat (limited to 'drivers/video/fbdev/ssd1307fb.c')
-rw-r--r-- | drivers/video/fbdev/ssd1307fb.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c index 132d1a205011..46881a691549 100644 --- a/drivers/video/fbdev/ssd1307fb.c +++ b/drivers/video/fbdev/ssd1307fb.c @@ -301,6 +301,9 @@ static ssize_t ssd1307fb_write(struct fb_info *info, const char __user *buf, void *dst; int ret; + if (!info->screen_buffer) + return -ENODEV; + total_size = info->fix.smem_len; if (p > total_size) @@ -396,8 +399,8 @@ static int ssd1307fb_init(struct ssd1307fb_par *par) /* Enable the PWM */ pwm_enable(par->pwm); - dev_dbg(&par->client->dev, "Using PWM%d with a %lluns period.\n", - par->pwm->pwm, pwm_get_period(par->pwm)); + dev_dbg(&par->client->dev, "Using PWM %s with a %lluns period.\n", + par->pwm->label, pwm_get_period(par->pwm)); } /* Set initial contrast */ |