diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/iio/industrialio-core.c | 10 | ||||
| -rw-r--r-- | drivers/video/tegra/fb.c | 3 |
2 files changed, 10 insertions, 3 deletions
diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c index 19819e7578c6..fd812c343e81 100644 --- a/drivers/staging/iio/industrialio-core.c +++ b/drivers/staging/iio/industrialio-core.c @@ -860,7 +860,10 @@ static ssize_t iio_ev_state_show(struct device *dev, { struct iio_dev *indio_dev = dev_get_drvdata(dev); struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); - int val = indio_dev->info->read_event_config(indio_dev, + int val = -ENODEV; + + if (indio_dev->info != NULL && indio_dev->info->read_event_config != NULL) + val = indio_dev->info->read_event_config(indio_dev, this_attr->address); if (val < 0) @@ -875,9 +878,10 @@ static ssize_t iio_ev_value_show(struct device *dev, { struct iio_dev *indio_dev = dev_get_drvdata(dev); struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); - int val, ret; + int val, ret = -ENODEV; - ret = indio_dev->info->read_event_value(indio_dev, + if (indio_dev->info != NULL && indio_dev->info->read_event_config != NULL) + ret = indio_dev->info->read_event_value(indio_dev, this_attr->address, &val); if (ret < 0) return ret; diff --git a/drivers/video/tegra/fb.c b/drivers/video/tegra/fb.c index 70b82bde9e43..b687382d1dd4 100644 --- a/drivers/video/tegra/fb.c +++ b/drivers/video/tegra/fb.c @@ -399,6 +399,9 @@ static int tegra_fb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long } int tegra_fb_get_mode(struct tegra_dc *dc) { + /* Avoid error when reading sysfs */ + if (dc->fb->info->mode == NULL) + return 0; return dc->fb->info->mode->refresh; } |