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| author | jhb <jhb@FreeBSD.org> | 2001-10-20 03:32:33 +0000 |
|---|---|---|
| committer | jhb <jhb@FreeBSD.org> | 2001-10-20 03:32:33 +0000 |
| commit | 891c34698a4faa7efcd9ce88df5ac94ddb4c2d62 (patch) | |
| tree | cccb03262f8b70332a6a490fe8b029e71e436d81 /sys/dev/sio/sio.c | |
| parent | 6d85fccce7fdcfe3bf0e0f761bbee8af401e2760 (diff) | |
| download | FreeBSD-src-891c34698a4faa7efcd9ce88df5ac94ddb4c2d62.zip FreeBSD-src-891c34698a4faa7efcd9ce88df5ac94ddb4c2d62.tar.gz | |
- Make the sio_inited handling more properly MP safe.
- If we are booting with a serial console, then pass the MTX_QUIET flag to
mtx_init of the sio lock as otherwise KTR_VERBOSE simply doesn't work.
Diffstat (limited to 'sys/dev/sio/sio.c')
| -rw-r--r-- | sys/dev/sio/sio.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sys/dev/sio/sio.c b/sys/dev/sio/sio.c index badf07d..9f86bc8 100644 --- a/sys/dev/sio/sio.c +++ b/sys/dev/sio/sio.c @@ -778,8 +778,12 @@ sioprobe(dev, xrid) com->bst = rman_get_bustag(port); com->bsh = rman_get_bushandle(port); - if (atomic_cmpset_int(&sio_inited, 0, 1)) - mtx_init(&sio_lock, driver_name, MTX_SPIN); + while (sio_inited != 2) + if (atomic_cmpset_int(&sio_inited, 0, 1)) { + mtx_init(&sio_lock, driver_name, (comconsole != -1) ? + MTX_SPIN | MTX_QUIET : MTX_SPIN); + atomic_store_rel_int(&sio_inited, 2); + } #if 0 /* |
