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| author | Michael Krufky <mkrufky@linuxtv.org> | 2008-04-18 20:26:04 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-06-05 06:35:46 -0300 |
| commit | 9adea1c00df74823e1719ebbcb86c972c4c2aba1 (patch) | |
| tree | 593f18bc17deebc9fd208831f16f8b1827a02570 /drivers/media | |
| parent | ba60bc673ce7d019ae6684cebbb33e5239346664 (diff) | |
| download | lwn-9adea1c00df74823e1719ebbcb86c972c4c2aba1.tar.gz lwn-9adea1c00df74823e1719ebbcb86c972c4c2aba1.zip | |
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>
Diffstat (limited to 'drivers/media')
| -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: \ __ret; \ }) +#define hybrid_tuner_report_instance_count(state) \ +({ \ + int __ret = 0; \ + if (state) \ + __ret = state->i2c_props.count; \ + __ret; \ +}) + #endif /* __TUNER_I2C_H__ */ |