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V4L/DVB: tda18271: fix error detection during initialization of first instance 

Fix error detection of failures during initialization of first instance:
Dont pass a function into the tda_fail macro. Instead, save the function
return value and pass that into the tda_fail macro.

This prevents the function from being called twice in cases of failure,
for example:

[19026.074070] tuner 4-0060: chip found @ 0xc0 (device #0)
[19026.087755] tda18271 4-0060: creating new instance
[19026.089965] Unknown device detected @ 4-0060, device not supported.
[19026.092233] Unknown device detected @ 4-0060, device not supported.
[19026.092241] tda18271_attach: [4-0060|M] error -22 on line 1275
[19026.092327] tda18271 4-0060: destroying instance

Signed-off-by: Michael Krufky <mkrufky@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Michael Krufky 2010-05-03 02:10:15 -03:00 committed by Mauro Carvalho Chehab
parent 4359e5b5ba
commit fab9bfbed2
1 changed files with 5 additions and 3 deletions
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8
drivers/media/common/tuners/tda18271-fe.c
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@ -1249,7 +1249,7 @@ struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
struct tda18271_config *cfg)
{
struct tda18271_priv *priv = NULL;
int instance;
int instance, ret;
mutex_lock(&tda18271_list_mutex);
@ -1268,10 +1268,12 @@ struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
priv->cal_initialized = false;
mutex_init(&priv->lock);
if (tda_fail(tda18271_get_id(fe)))
ret = tda18271_get_id(fe);
if (tda_fail(ret))
goto fail;
if (tda_fail(tda18271_assign_map_layout(fe)))
ret = tda18271_assign_map_layout(fe);
if (tda_fail(ret))
goto fail;
mutex_lock(&priv->lock);