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V4L/DVB (5741): Tuner: add release callback

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Individual tuner drivers are now allocating memory themselves for
their own private data structures.  This changeset adds a release
callback to the tuner operations, so that newer drivers that may
require more complex data structures may release this private data
themselves.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Michael Krufky 2007-06-04 14:40:27 -03:00 committed by Mauro Carvalho Chehab
parent 9ee476a56c
commit be2b85a135
2 changed files with 6 additions and 0 deletions
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5
drivers/media/video/tuner-core.c
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@ -178,8 +178,11 @@ static void set_type(struct i2c_client *c, unsigned int type,
}
/* discard private data, in case set_type() was previously called */
if (t->release)
t->release(c);
kfree(t->priv);
t->priv = NULL;
switch (t->type) {
case TUNER_MT2032:
microtune_init(c);
@ -561,6 +564,8 @@ static int tuner_detach(struct i2c_client *client)
return err;
}
if (t->release)
t->release(client);
kfree(t->priv);
kfree(t);
return 0;

1
include/media/tuner.h
View File

@ -215,6 +215,7 @@ struct tuner {
int (*get_afc)(struct i2c_client *c);
void (*tuner_status)(struct i2c_client *c);
void (*standby)(struct i2c_client *c);
void (*release)(struct i2c_client *c);
};
extern unsigned const int tuner_count;