copy_to_user() returns the number of bytes remaining, but we want a
negative error code here.
Signed-off-by: Axel Lin <axel....@gmail.com>
---
drivers/input/touchscreen/edt-ft5x06.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/input/touchscreen/edt-ft5x06.c
b/drivers/input/touchscreen/edt-ft5x06.c
index bf00b32..02e9dab 100644
--- a/drivers/input/touchscreen/edt-ft5x06.c
+++ b/drivers/input/touchscreen/edt-ft5x06.c
@@ -567,7 +567,9 @@ static ssize_t edt_ft5x06_debugfs_raw_data_read(struct file
*file,
read = min_t(size_t, count, tsdata->raw_bufsize - *off);
error = copy_to_user(buf, tsdata->raw_buffer + *off, read);
- if (!error)
+ if (error)
+ error = -EFAULT;
+ else
*off += read;
out:
mutex_unlock(&tsdata->mutex);
--
1.7.9.5
--
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