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author | imp <imp@FreeBSD.org> | 2001-08-27 01:30:46 +0000 |
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committer | imp <imp@FreeBSD.org> | 2001-08-27 01:30:46 +0000 |
commit | 6153dc75cf0d4a084abfa1682acfb6b43ff02179 (patch) | |
tree | 8eb6f737c529e72f82de56caddbe2371eeb82fa0 | |
parent | d4bbe5708a7e6f2319c93354c1ba08c4b616ea28 (diff) | |
download | FreeBSD-src-6153dc75cf0d4a084abfa1682acfb6b43ff02179.zip FreeBSD-src-6153dc75cf0d4a084abfa1682acfb6b43ff02179.tar.gz |
Note difficulties we had in OLDCARD using NEWCARD's methods of debouncing card event interrupts.
-rw-r--r-- | sys/dev/pccbb/pccbb.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/dev/pccbb/pccbb.c b/sys/dev/pccbb/pccbb.c index e914268..14513fb 100644 --- a/sys/dev/pccbb/pccbb.c +++ b/sys/dev/pccbb/pccbb.c @@ -700,6 +700,12 @@ pccbb_event_thread(void *arg) * Delay 1 second, make sure the user is done with * whatever he is doing. We tsleep on sc->sc_flags, * which should never be woken up. + * + * XXX Note: This can cause problems on card + * removal. See OLDCARD's ISR for how you may + * have to deal with the debouncing problem. The + * crux of the issue is interrupts delivered to + * the card after eject are unstable. */ tsleep (&sc->sc_flags, PWAIT, "pccbbev", 1*hz); } |