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authorMichael Krufky <mkrufky@linuxtv.org>2008-04-18 20:26:04 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2008-06-05 06:35:46 -0300
commit9adea1c00df74823e1719ebbcb86c972c4c2aba1 (patch)
tree593f18bc17deebc9fd208831f16f8b1827a02570 /drivers/media
parentba60bc673ce7d019ae6684cebbb33e5239346664 (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>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/common/tuners/tuner-i2c.h8
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 3ad6c8e0b04..cb1c7141f0c 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__ */