Messages in this thread Patch in this message | | | From | "Daniel W. S. Almeida" <> | Subject | [PATCH 2/6] media: dvb_dummy_fe: Add error messages in case of attach failure | Date | Sun, 1 Dec 2019 13:15:38 -0300 |
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From: "Daniel W. S. Almeida" <dwlsalmeida@gmail.com>
Complain if the attach functions fail, for any reason. This is helpful when debugging.
Suggested-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com> --- drivers/media/dvb-frontends/dvb_dummy_fe.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-)
diff --git a/drivers/media/dvb-frontends/dvb_dummy_fe.c b/drivers/media/dvb-frontends/dvb_dummy_fe.c index 909dac2345c4..987c3488fe6c 100644 --- a/drivers/media/dvb-frontends/dvb_dummy_fe.c +++ b/drivers/media/dvb-frontends/dvb_dummy_fe.c @@ -114,12 +114,16 @@ struct dvb_frontend* dvb_dummy_fe_ofdm_attach(void) /* allocate memory for the internal state */ state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); if (!state) - return NULL; + goto err; /* create dvb_frontend */ memcpy(&state->frontend.ops, &dvb_dummy_fe_ofdm_ops, sizeof(struct dvb_frontend_ops)); state->frontend.demodulator_priv = state; return &state->frontend; + +err: + pr_err("%s: DVB Dummy frontend driver attach failed\n", __func__); + return NULL; } EXPORT_SYMBOL(dvb_dummy_fe_ofdm_attach); @@ -132,12 +136,16 @@ struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void) /* allocate memory for the internal state */ state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); if (!state) - return NULL; + goto err; /* create dvb_frontend */ memcpy(&state->frontend.ops, &dvb_dummy_fe_qpsk_ops, sizeof(struct dvb_frontend_ops)); state->frontend.demodulator_priv = state; return &state->frontend; + +err: + pr_err("%s: DVB Dummy frontend driver attach failed\n", __func__); + return NULL; } EXPORT_SYMBOL(dvb_dummy_fe_qpsk_attach); @@ -150,12 +158,16 @@ struct dvb_frontend *dvb_dummy_fe_qam_attach(void) /* allocate memory for the internal state */ state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); if (!state) - return NULL; + goto err; /* create dvb_frontend */ memcpy(&state->frontend.ops, &dvb_dummy_fe_qam_ops, sizeof(struct dvb_frontend_ops)); state->frontend.demodulator_priv = state; return &state->frontend; + +err: + pr_err("%s: DVB Dummy frontend driver attach failed\n", __func__); + return NULL; } EXPORT_SYMBOL(dvb_dummy_fe_qam_attach); -- 2.24.0
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