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staging: dgap: fix memory leak caused by double allocation of tty_structs 

The tty_struct of serial_driver and print_driver were getting
allocated twice. One is allocated in tty_alloc_driver(), the other
is in dgap_tty_register(). So remove these in dgap_tty_register().

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Daeseok Youn 2014-11-06 19:27:11 +09:00 коммит произвёл Greg Kroah-Hartman
Родитель dc3cfcd3f4
Коммит 429161d164
1 изменённых файлов: 0 добавлений и 16 удалений
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16
drivers/staging/dgap/dgap.c
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@ -5254,14 +5254,6 @@ static int dgap_tty_register(struct board_t *brd)
brd->serial_driver->init_termios = dgap_default_termios;
brd->serial_driver->driver_name = DRVSTR;
/* The kernel wants space to store pointers to tty_structs */
brd->serial_driver->ttys =
kzalloc(MAXPORTS * sizeof(struct tty_struct *), GFP_KERNEL);
if (!brd->serial_driver->ttys) {
rc = -ENOMEM;
goto free_serial_drv;
}
/*
* Entry points for driver. Called by the kernel from
* tty_io.c and n_tty.c.
@ -5293,14 +5285,6 @@ static int dgap_tty_register(struct board_t *brd)
brd->print_driver->init_termios = dgap_default_termios;
brd->print_driver->driver_name = DRVSTR;
/* The kernel wants space to store pointers to tty_structs */
brd->print_driver->ttys =
kzalloc(MAXPORTS * sizeof(struct tty_struct *), GFP_KERNEL);
if (!brd->print_driver->ttys) {
rc = -ENOMEM;
goto free_print_drv;
}
/*
* Entry points for driver. Called by the kernel from
* tty_io.c and n_tty.c.