From 8a118c204b8f52bd5b51f99be1d641360696bb21 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 18 Dec 2008 07:00:25 -0200 Subject: tuner-xc2028: allow printing stack trace as debug on sleep code From: Mauro Carvalho Chehab tuner-xc3028 can be put to sleep to save power. However, if not properly recovered from sleep, the device won't work. It is noticed that some devices doesn't recover properly, so let's add a dump_stack() as a debug option, to allow us to track when this happens. Priority: normal Signed-off-by: Mauro Carvalho Chehab --- linux/drivers/media/common/tuners/tuner-xc2028.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'linux/drivers/media/common/tuners/tuner-xc2028.c') diff --git a/linux/drivers/media/common/tuners/tuner-xc2028.c b/linux/drivers/media/common/tuners/tuner-xc2028.c index 9536e3d3b..bd010379b 100644 --- a/linux/drivers/media/common/tuners/tuner-xc2028.c +++ b/linux/drivers/media/common/tuners/tuner-xc2028.c @@ -1111,6 +1111,10 @@ static int xc2028_sleep(struct dvb_frontend *fe) return 0; tuner_dbg("Putting xc2028/3028 into poweroff mode.\n"); + if (debug > 1) { + tuner_dbg("Printing sleep stack trace:\n"); + dump_stack(); + } mutex_lock(&priv->lock); -- cgit v1.2.3