From: Daeseok Youn <daeseok.youn@gmail.com>
Date: Mon, 19 May 2014 09:56:34 +0000 (+0900)
Subject: staging: dgap: implement error handling in dgap_tty_register()
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~36^2~358
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9140fcd655541fee5655701df05ab0b06653c24c;p=pandora-kernel.git

staging: dgap: implement error handling in dgap_tty_register()

- alloc_tty_driver() is deprecated so it is changed to
tty_alloc_driver()
- Pointers which are allocated by alloc_tty_driver() and kzalloc()
can be NULL so it need to check NULL for them.
- If one of those is failed, it need to add proper handler for
avoiding memory leak.
- If both of drivers are registered normally, and
then set TRUE to dgap_major_serial{print}_registered. If one
of drivers is failed to register, leave a default value as
FALSE.

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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