From 9c67b789e051449d3914d683ba3604c5babc4dd9 Mon Sep 17 00:00:00 2001 From: Daniel Kurtz Date: Thu, 28 Jun 2012 21:08:07 +0800 Subject: [PATCH] Input: atmel_mxt_ts - use scnprintf for object sysfs entry Using scnprintf() is a cleaner way to ensure that we don't overwrite the PAGE_SIZE sysfs output buffer. Signed-off-by: Daniel Kurtz Signed-off-by: Henrik Rydberg --- drivers/input/touchscreen/atmel_mxt_ts.c | 16 ++++------------ 1 file changed, 4 insertions(+), 12 deletions(-) diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 9f8dd973e5f5..55855b8c2efd 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; -- 2.20.1