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Tilman Schmidt 907ca374f8 isdn: avoid calling tty_ldisc_flush() in atomic context

commit bc10f96757 upstream.

Remove the call to tty_ldisc_flush() from the RESULT_NO_CARRIER
branch of isdn_tty_modem_result(), as already proposed in commit
00409bb045.
This avoids a "sleeping function called from invalid context" BUG
when the hardware driver calls the statcallb() callback with
command==ISDN_STAT_DHUP in atomic context, which in turn calls
isdn_tty_modem_result(RESULT_NO_CARRIER, ~), and from there,
tty_ldisc_flush() which may sleep.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2011-03-23 13:16:55 -07:00

act2000

ISDN: ARRAY_SIZE changes

2009-07-25 20:23:05 +02:00

capi

headers: remove sched.h from interrupt.h

2009-10-11 11:20:58 -07:00

divert

headers: remove sched.h from poll.h

2009-10-04 15:05:10 -07:00

gigaset

gigaset: prune use of tty_buffer_request_room