staging: dgap: implement error handling in dgap_tty_register()

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- 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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Daeseok Youn 2014-05-19 18:56:34 +09:00 • committed by Greg Kroah-Hartman

parent 02d9b1eb4b

commit 9140fcd655

1 changed files with 33 additions and 12 deletions

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drivers/staging/dgap/dgap.c

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