Since snprintf() returns the would-be-output size instead of the
actual output size, the succeeding calls may go beyond the given
buffer limit. Fix it by replacing with scnprintf().
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---
drivers/iio/light/tsl2772.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/iio/light/tsl2772.c b/drivers/iio/light/tsl2772.c
index be37fcbd4654..44a0b56a558c 100644
--- a/drivers/iio/light/tsl2772.c
+++ b/drivers/iio/light/tsl2772.c
@@ -986,7 +986,7 @@ static ssize_t in_illuminance0_lux_table_show(struct device *dev,
int offset = 0;
while (i < TSL2772_MAX_LUX_TABLE_SIZE) {
- offset += snprintf(buf + offset, PAGE_SIZE, "%u,%u,",
+ offset += scnprintf(buf + offset, PAGE_SIZE, "%u,%u,",
chip->tsl2772_device_lux[i].ch0,
chip->tsl2772_device_lux[i].ch1);
if (chip->tsl2772_device_lux[i].ch0 == 0) {
@@ -1000,7 +1000,7 @@ static ssize_t in_illuminance0_lux_table_show(struct device *dev,
i++;
}
- offset += snprintf(buf + offset, PAGE_SIZE, "\n");
+ offset += scnprintf(buf + offset, PAGE_SIZE, "\n");
return offset;
}
--
2.16.4
