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>
diff --git a/drivers/media/common/tuners/tuner-i2c.h b/drivers/media/common/tuners/tuner-i2c.h
index 3ad6c8e..cb1c714 100644
--- a/drivers/media/common/tuners/tuner-i2c.h
+++ b/drivers/media/common/tuners/tuner-i2c.h
@@ -170,4 +170,12 @@
__ret; \
})
+#define hybrid_tuner_report_instance_count(state) \
+({ \
+ int __ret = 0; \
+ if (state) \
+ __ret = state->i2c_props.count; \
+ __ret; \
+})
+
#endif /* __TUNER_I2C_H__ */