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| author | imp <imp@FreeBSD.org> | 2012-06-28 07:28:39 +0000 |
|---|---|---|
| committer | imp <imp@FreeBSD.org> | 2012-06-28 07:28:39 +0000 |
| commit | 70f14937717a36470a6064303c7a9346e1abcf8a (patch) | |
| tree | 471c872e6bc918ad44e344d193d18e7c2017e4be | |
| parent | 46e01d5036389752ab56c23e167d97dfed00ab59 (diff) | |
| download | FreeBSD-src-70f14937717a36470a6064303c7a9346e1abcf8a.zip FreeBSD-src-70f14937717a36470a6064303c7a9346e1abcf8a.tar.gz | |
Document some MP assumptions for sio.
Submitted by: bde (years ago)
| -rw-r--r-- | sys/dev/sio/sio.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/dev/sio/sio.c b/sys/dev/sio/sio.c index d389f45..d187a2b 100644 --- a/sys/dev/sio/sio.c +++ b/sys/dev/sio/sio.c @@ -278,6 +278,11 @@ static int sio_inited; /* table and macro for fast conversion from a unit number to its com struct */ devclass_t sio_devclass; +/* + * XXX Assmues that devclass_get_device, devclass_get_softc and + * device_get_softc are fast interrupt safe. The current implementation + * of these functions are. + */ #define com_addr(unit) ((struct com_s *) \ devclass_get_softc(sio_devclass, unit)) /* XXX */ |
