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| author | Tilman Schmidt <tilman@imap.cc> | 2010-07-05 14:18:27 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-03-23 13:16:55 -0700 |
| commit | 907ca374f80ef1b95426cbe21299756574a79149 (patch) | |
| tree | 058c9fae85ad5c5a0fa1bff45fcb4d83989e9a63 /kernel | |
| parent | ba456fd7ec1bdc31a4ad4a6bd02802dcaa730a33 (diff) | |
isdn: avoid calling tty_ldisc_flush() in atomic context
commit bc10f96757bd6ab3721510df8defa8f21c32f974 upstream.
Remove the call to tty_ldisc_flush() from the RESULT_NO_CARRIER
branch of isdn_tty_modem_result(), as already proposed in commit
00409bb045887ec5e7b9e351bc080c38ab6bfd33.
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>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions