The only usage of the ops field in the loopback_cable struct is to call its members, the field it self is never changed. Make it a pointer to const. This allows us to constify two static loopback_ops structs to allow the compiler to put them in read-only memory.
Signed-off-by: Rikard Falkeborn rikard.falkeborn@gmail.com --- sound/drivers/aloop.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/sound/drivers/aloop.c b/sound/drivers/aloop.c index c91356326699..702f91b9c60f 100644 --- a/sound/drivers/aloop.c +++ b/sound/drivers/aloop.c @@ -105,7 +105,7 @@ struct loopback_cable { unsigned int running; unsigned int pause; /* timer specific */ - struct loopback_ops *ops; + const struct loopback_ops *ops; /* If sound timer is used */ struct { int stream; @@ -1021,7 +1021,7 @@ static int loopback_jiffies_timer_open(struct loopback_pcm *dpcm) return 0; }
-static struct loopback_ops loopback_jiffies_timer_ops = { +static const struct loopback_ops loopback_jiffies_timer_ops = { .open = loopback_jiffies_timer_open, .start = loopback_jiffies_timer_start, .stop = loopback_jiffies_timer_stop, @@ -1172,7 +1172,7 @@ static int loopback_snd_timer_open(struct loopback_pcm *dpcm) /* stop_sync() is not required for sound timer because it does not need to be * restarted in loopback_prepare() on Xrun recovery */ -static struct loopback_ops loopback_snd_timer_ops = { +static const struct loopback_ops loopback_snd_timer_ops = { .open = loopback_snd_timer_open, .start = loopback_snd_timer_start, .stop = loopback_snd_timer_stop,