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author | George Spelvin <linux@horizon.com> | 2013-02-10 04:08:32 -0500 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-02-13 09:40:35 -0800 |
commit | 513b032c98b4b9414aa4e9b4a315cb1bf0380101 (patch) | |
tree | 3483659abdcc63cb831bf9ded62e981de3ffd5e3 /fs | |
parent | 6d53c3b71d32da665dc2742c1e8663741f27d3cd (diff) | |
download | op-kernel-dev-513b032c98b4b9414aa4e9b4a315cb1bf0380101.zip op-kernel-dev-513b032c98b4b9414aa4e9b4a315cb1bf0380101.tar.gz |
pps: Add pps_lookup_dev() function
The PPS serial line discipline wants to attach a PPS device to a tty
without changing the tty code to add a struct pps_device * pointer.
Since the number of PPS devices in a typical system is generally very low
(n=1 is by far the most common), it's practical to search the entire list
of allocated pps devices. (We capture the timestamp before the lookup,
so the timing isn't affected.)
It is a bit ugly that this function, which is part of the in-kernel
PPS API, has to be in pps.c as opposed to kapi,c, but that's not
something that affects users.
Signed-off-by: George Spelvin <linux@horizon.com>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions