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V4L/DVB (9913): tuner-xc2028: allow printing stack trace as debug on sleep code

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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.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2008-12-18 06:00:25 -03:00
parent efc52a9484
commit e278e746bc
1 changed files with 4 additions and 0 deletions
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4
drivers/media/common/tuners/tuner-xc2028.c
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@ -1107,6 +1107,10 @@ 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);