From: Michael Krufky Date: Mon, 3 May 2010 05:10:15 +0000 (-0300) Subject: V4L/DVB: tda18271: fix error detection during initialization of first instance X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=fab9bfbed22f91f271a93a3dfa142179a2278935;p=linux-beck.git 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 Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/common/tuners/tda18271-fe.c b/drivers/media/common/tuners/tda18271-fe.c index b2e15456d5f3..7955e49a3440 100644 --- a/drivers/media/common/tuners/tda18271-fe.c +++ b/drivers/media/common/tuners/tda18271-fe.c @@ -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);