Using scnprintf() is a cleaner way to ensure that we don't overwrite the
PAGE_SIZE sysfs output buffer.
Signed-off-by: Daniel Kurtz <djkurtz@xxxxxxxxxxxx>
---
drivers/input/touchscreen/atmel_mxt_ts.c | 16 ++++------------
1 files changed, 4 insertions(+), 12 deletions(-)
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 9f8dd97..55855b8 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -904,17 +904,13 @@ static ssize_t mxt_object_show(struct device *dev,
for (i = 0; i < data->info.object_num; i++) {
object = data->object_table + i;
- count += snprintf(buf + count, PAGE_SIZE - count,
+ count += scnprintf(buf + count, PAGE_SIZE - count,
"Object[%d] (Type %d)\n",
i + 1, object->type);
- if (count >= PAGE_SIZE)
- return PAGE_SIZE - 1;
if (!mxt_object_readable(object->type)) {
- count += snprintf(buf + count, PAGE_SIZE - count,
+ count += scnprintf(buf + count, PAGE_SIZE - count,
"\n");
- if (count >= PAGE_SIZE)
- return PAGE_SIZE - 1;
continue;
}
@@ -924,15 +920,11 @@ static ssize_t mxt_object_show(struct device *dev,
if (error)
return error;
- count += snprintf(buf + count, PAGE_SIZE - count,
+ count += scnprintf(buf + count, PAGE_SIZE - count,
"\t[%2d]: %02x (%d)\n", j, val, val);
- if (count >= PAGE_SIZE)
- return PAGE_SIZE - 1;
}
- count += snprintf(buf + count, PAGE_SIZE - count, "\n");
- if (count >= PAGE_SIZE)
- return PAGE_SIZE - 1;
+ count += scnprintf(buf + count, PAGE_SIZE - count, "\n");
}
return count;
--
1.7.7.3
--
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