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bc10f96757
linux/drivers/isdn
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Tilman Schmidt bc10f96757 isdn: avoid calling tty_ldisc_flush() in atomic context 
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>
2010-07-05 19:41:23 -07:00
..
act2000 include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
capi isdn/kcapi: return -EFAULT on copy_from_user errors 2010-06-03 03:28:22 -07:00
divert Merge branch 'bkl/procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing 2010-05-19 17:23:28 -07:00
gigaset Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2010-05-25 16:59:51 -07:00
hardware drivers/isdn/hardware/mISDN: Use GFP_ATOMIC when a lock is held 2010-06-01 00:26:06 -07:00
hisax Merge branch 'modules' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus 2010-05-21 17:15:44 -07:00
hysdn include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
i4l isdn: avoid calling tty_ldisc_flush() in atomic context 2010-07-05 19:41:23 -07:00
icn include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
isdnloop include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mISDN mISDN: remove unnecessary test on f_pos 2010-05-27 09:12:56 -07:00
pcbit drivers/isdn: Use memdup_user 2010-05-31 00:24:15 -07:00
sc drivers/isdn: Use memdup_user 2010-05-31 00:24:15 -07:00
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