Commit 35b1da4e authored by Axel Lin's avatar Axel Lin Committed by Dmitry Torokhov

Input: edt-ft5x06 - return -EFAULT on copy_to_user() error

copy_to_user() returns the number of bytes remaining, but we want a
negative error code here.
Signed-off-by: default avatarAxel Lin <axel.lin@gmail.com>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 30ebb7fa
......@@ -566,9 +566,12 @@ 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)
*off += read;
if (copy_to_user(buf, tsdata->raw_buffer + *off, read)) {
error = -EFAULT;
goto out;
}
*off += read;
out:
mutex_unlock(&tsdata->mutex);
return error ?: read;
......
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