diff options
author | Michael Krufky <mkrufky@linuxtv.org> | 2008-04-18 19:26:04 -0400 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-06-05 05:35:46 -0400 |
commit | 9adea1c00df74823e1719ebbcb86c972c4c2aba1 (patch) | |
tree | 593f18bc17deebc9fd208831f16f8b1827a02570 | |
parent | ba60bc673ce7d019ae6684cebbb33e5239346664 (diff) |
V4L/DVB (7943): tuner: add macro, hybrid_tuner_report_instance_count
Create a macro to report the number of instances of the tuner driver
currently in use. This will allow drivers to perform specific cleanups
before destroying the last instance of a tuner.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
-rw-r--r-- | drivers/media/common/tuners/tuner-i2c.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/media/common/tuners/tuner-i2c.h b/drivers/media/common/tuners/tuner-i2c.h index 3ad6c8e0b04c..cb1c7141f0c6 100644 --- a/drivers/media/common/tuners/tuner-i2c.h +++ b/drivers/media/common/tuners/tuner-i2c.h | |||
@@ -170,4 +170,12 @@ __fail: \ | |||
170 | __ret; \ | 170 | __ret; \ |
171 | }) | 171 | }) |
172 | 172 | ||
173 | #define hybrid_tuner_report_instance_count(state) \ | ||
174 | ({ \ | ||
175 | int __ret = 0; \ | ||
176 | if (state) \ | ||
177 | __ret = state->i2c_props.count; \ | ||
178 | __ret; \ | ||
179 | }) | ||
180 | |||
173 | #endif /* __TUNER_I2C_H__ */ | 181 | #endif /* __TUNER_I2C_H__ */ |