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V4L/DVB (7379): tuner: prevent instance sharing if i2c adapter is NULL

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We currently do not have a method to enable instance staring if i2c adapter
is NULL, in the cases of dvb demods that write to the tuner directly using
calc_regs.  Prevent possible wrong instance sharing for these cases until
a better solution can be found.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Michael Krufky 2008-04-22 14:46:04 -03:00 committed by Mauro Carvalho Chehab
parent 7daa4a8897
commit cac2b0eb18
1 changed files with 4 additions and 4 deletions
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8
drivers/media/video/tuner-i2c.h
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@ -129,10 +129,10 @@ static inline int tuner_i2c_xfer_send_recv(struct tuner_i2c_props *props,
({ \
int __ret = 0; \
list_for_each_entry(state, &list, hybrid_tuner_instance_list) { \
if ((state->i2c_props.addr == i2caddr) && \
((state->i2c_props.adap ? \
i2c_adapter_id(state->i2c_props.adap) : -1) == \
(i2cadap ? i2c_adapter_id(i2cadap) : -1))) { \
if (((i2cadap) && (state->i2c_props.adap)) && \
((i2c_adapter_id(state->i2c_props.adap) == \
i2c_adapter_id(i2cadap)) && \
(i2caddr == state->i2c_props.addr))) { \
__tuner_info(state->i2c_props, \
"attaching existing instance\n"); \
state->i2c_props.count++; \