[PATCH 4.18 133/235] Revert "cdc-acm: implement put_char() and flush_chars()"

4.18-stable review patch. If anyone has any objections, please let me know. -- From: Oliver Neukum commit df3aa13c7bbb307e172c37f193f9a7aa058d4739 upstream. This reverts commit a81cf9799ad7299b03a4dff020d9685f9ac5f3e0. The patch causes a regression, which I cannot find the

[PATCH 4.18 133/235] Revert "cdc-acm: implement put_char() and flush_chars()"

4.18-stable review patch. If anyone has any objections, please let me know. -- From: Oliver Neukum commit df3aa13c7bbb307e172c37f193f9a7aa058d4739 upstream. This reverts commit a81cf9799ad7299b03a4dff020d9685f9ac5f3e0. The patch causes a regression, which I cannot find the