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 <redacted>
---
drivers/video/fbdev/omap2/omapfb/omapfb-sysfs.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/video/fbdev/omap2/omapfb/omapfb-sysfs.c b/drivers/video/fbdev/omap2/omapfb/omapfb-sysfs.c
index 4a5db170ef59..2d39dbfa742e 100644
--- a/drivers/video/fbdev/omap2/omapfb/omapfb-sysfs.c
+++ b/drivers/video/fbdev/omap2/omapfb/omapfb-sysfs.c
@@ -147,11 +147,11 @@ static ssize_t show_overlays(struct device *dev,
if (ovl = fbdev->overlays[ovlnum])
break;
- l += snprintf(buf + l, PAGE_SIZE - l, "%s%d",
+ l += scnprintf(buf + l, PAGE_SIZE - l, "%s%d",
t = 0 ? "" : ",", ovlnum);
}
- l += snprintf(buf + l, PAGE_SIZE - l, "\n");
+ l += scnprintf(buf + l, PAGE_SIZE - l, "\n");
omapfb_unlock(fbdev);
unlock_fb_info(fbi);
@@ -328,11 +328,11 @@ static ssize_t show_overlays_rotate(struct device *dev,
lock_fb_info(fbi);
for (t = 0; t < ofbi->num_overlays; t++) {
- l += snprintf(buf + l, PAGE_SIZE - l, "%s%d",
+ l += scnprintf(buf + l, PAGE_SIZE - l, "%s%d",
t = 0 ? "" : ",", ofbi->rotation[t]);
}
- l += snprintf(buf + l, PAGE_SIZE - l, "\n");
+ l += scnprintf(buf + l, PAGE_SIZE - l, "\n");
unlock_fb_info(fbi);
--
2.16.4