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author | Jiri Slaby <jslaby@suse.cz> | 2012-03-05 13:52:54 (GMT) |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-08 20:51:13 (GMT) |
commit | fc258f89405f63b379324d1f8388ae4810297997 (patch) | |
tree | 7027aadb38d74ff01e24c759339e75b16e0515dd /drivers/isdn/gigaset/gigaset.h | |
parent | 5dd5bc40f3b6e0ccdaad948dbadc94ad0906cb25 (diff) | |
download | linux-fsl-qoriq-fc258f89405f63b379324d1f8388ae4810297997.tar.xz |
TTY: isdn/gigaset, do not set tty->driver_data to NULL
Close the window in open where driver_data is reset to NULL on each
open. It could cause other processes to get invalid retval from the
tty->ops operations because of the checks all over the code.
With this change we may do other cleanups. Now, the only valid check
for tty->driver_data != NULL is in close. This can happen only if open
fails at gigaset_get_cs_by_tty or try_module_get. The rest of checks
in various tty->ops->* are invalid as driver_data cannot be NULL
there. The same holds for cs->open_count. So remove them.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Hansjoerg Lipp <hjlipp@web.de>
Cc: Tilman Schmidt <tilman@imap.cc>
Cc: gigaset307x-common@lists.sourceforge.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/isdn/gigaset/gigaset.h')
0 files changed, 0 insertions, 0 deletions