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author | Michal Ostrowski <mostrows@watson.ibm.com> | 2006-02-18 14:29:59 (GMT) |
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committer | Paul Mackerras <paulus@samba.org> | 2006-02-24 00:36:40 (GMT) |
commit | fb5c594c2acc441f0d2d8f457484a0e0e9285db3 (patch) | |
tree | 0465b7b5fb518f21f6d4689e027f0f04bb3ebe35 /include/asm-ppc | |
parent | 4558f417f49595337b7e9cc3e92bc0856c588ac1 (diff) | |
download | linux-fsl-qoriq-fb5c594c2acc441f0d2d8f457484a0e0e9285db3.tar.xz |
[PATCH] Fix race condition in hvc console.
tty_schedule_flip() would schedule a thread that would call flush_to_ldisc().
If tty_buffer_request_room() gets called prior to that thread running --
which is likely in this loop in hvc_poll(), it would set the active flag
in the tty buffer and consequently flush_to_ldisc() would ignore it.
The result is that input on the hvc console is not processed.
This fix calls tty_flip_buffer_push (and flags the tty as
"low_latency"). The push to the ldisc thus happens synchronously.
Signed-off-by: Michal Ostrowski <mostrows@watson.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-ppc')
0 files changed, 0 insertions, 0 deletions