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S. Almeida" X-Google-Original-From: Daniel W. S. Almeida To: mchehab@kernel.org, gregkh@linuxfoundation.org, rfontana@redhat.com, kstewart@linuxfoundation.org, tglx@linutronix.de Date: Tue, 26 Nov 2019 12:31:57 -0300 Message-Id: <20191126153157.26355-1-dwlsalmeida@gmail.com> X-Mailer: git-send-email 2.24.0 MIME-Version: 1.0 Cc: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-kernel-mentees@lists.linuxfoundation.org, "Daniel W. S. Almeida" Subject: [Linux-kernel-mentees] [PATCH] media: dummy_dvb_fe: register adapter/frontend X-BeenThere: linux-kernel-mentees@lists.linuxfoundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-kernel-mentees-bounces@lists.linuxfoundation.org Sender: "Linux-kernel-mentees" From: "Daniel W. S. Almeida" Before using the DTV frontend core, a bridge driver should register the new frontend at the subsystem and unregister it at device detach / removal. Signed-off-by: Daniel W. S. Almeida --- drivers/media/dvb-frontends/dvb_dummy_fe.c | 39 ++++++++++++++++++++-- 1 file changed, 37 insertions(+), 2 deletions(-) diff --git a/drivers/media/dvb-frontends/dvb_dummy_fe.c b/drivers/media/dvb-frontends/dvb_dummy_fe.c index 4db679cb70ad..1ccb58c67e8e 100644 --- a/drivers/media/dvb-frontends/dvb_dummy_fe.c +++ b/drivers/media/dvb-frontends/dvb_dummy_fe.c @@ -13,12 +13,12 @@ #include #include "dvb_dummy_fe.h" +DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); struct dvb_dummy_fe_state { struct dvb_frontend frontend; }; - static int dvb_dummy_fe_read_status(struct dvb_frontend *fe, enum fe_status *status) { @@ -84,7 +84,36 @@ static int dvb_dummy_fe_sleep(struct dvb_frontend* fe) static int dvb_dummy_fe_init(struct dvb_frontend* fe) { - return 0; + int result = 0; + struct dvb_adapter *adapter = fe->dvb; + + result = dvb_register_adapter(adapter, + KBUILD_MODNAME, + THIS_MODULE, + adapter->device, + adapter_nr); + + if (!result) { + pr_err("DVB_DUMMY_FE: Failed to register the adapter, errno:%d", + result); + goto err; + } + + result = dvb_register_frontend(adapter, fe); + if (!result) { + pr_err("DVB_DUMMY_FE: Failed to register the frontend, errno:%d", + result); + goto err; + } + + return result; + +err: + dvb_unregister_adapter(adapter); + dvb_unregister_frontend(fe); + dvb_frontend_detach(fe); + return result; + } static int dvb_dummy_fe_set_tone(struct dvb_frontend *fe, @@ -102,6 +131,12 @@ static int dvb_dummy_fe_set_voltage(struct dvb_frontend *fe, static void dvb_dummy_fe_release(struct dvb_frontend* fe) { struct dvb_dummy_fe_state* state = fe->demodulator_priv; + struct dvb_adapter *adapter = fe->dvb; + + dvb_unregister_adapter(adapter); + dvb_unregister_frontend(fe); + dvb_frontend_detach(fe); + kfree(state); } -- 2.24.0 _______________________________________________ Linux-kernel-mentees mailing list Linux-kernel-mentees@lists.linuxfoundation.org https://lists.linuxfoundation.org/mailman/listinfo/linux-kernel-mentees