diff options
| author | Tobias Heider <tobhe@cvs.openbsd.org> | 2022-10-23 22:15:46 +0000 |
|---|---|---|
| committer | Tobias Heider <tobhe@cvs.openbsd.org> | 2022-10-23 22:15:46 +0000 |
| commit | fa2bec0c4d23320eb8fc6fa3a689833dbdba7592 (patch) | |
| tree | beeb1ad2084d9d23bcf7df1c672eeefecc513676 /sys/arch | |
| parent | 45b4666a028b3c85e06a27f84dc5cd0ea3ef15bd (diff) | |
Make sure driver is attached before allocating a channel. Fixes a crash on
M2 Macbook Air with a newer device tree where aplaudio tries to allocate a
channel after apldma_attach() failed.
ok kettenis@
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/arm64/dev/apldma.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/arch/arm64/dev/apldma.c b/sys/arch/arm64/dev/apldma.c index 8390003a3de..cf6107f8cef 100644 --- a/sys/arch/arm64/dev/apldma.c +++ b/sys/arch/arm64/dev/apldma.c @@ -1,4 +1,4 @@ -/* $OpenBSD: apldma.c,v 1.3 2022/10/12 11:29:53 jsg Exp $ */ +/* $OpenBSD: apldma.c,v 1.4 2022/10/23 22:15:45 tobhe Exp $ */ /* * Copyright (c) 2022 Mark Kettenis <kettenis@openbsd.org> * @@ -259,7 +259,7 @@ apldma_alloc_channel(unsigned int chan) struct apldma_softc *sc = apldma_sc; struct apldma_channel *ac; - if (chan >= sc->sc_nchannels) + if (sc == NULL || chan >= sc->sc_nchannels) return NULL; /* We only support Tx channels for now. */ |