From patchwork Thu May 29 12:20:14 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 4264081 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 99FF99F1E7 for ; Thu, 29 May 2014 12:20:37 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 70D2A2034B for ; Thu, 29 May 2014 12:20:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2C2992034A for ; Thu, 29 May 2014 12:20:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757337AbaE2MU3 (ORCPT ); Thu, 29 May 2014 08:20:29 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:36000 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757333AbaE2MU0 (ORCPT ); Thu, 29 May 2014 08:20:26 -0400 Received: from [201.74.152.26] (helo=smtp.w2.samsung.com) by bombadil.infradead.org with esmtpsa (Exim 4.80.1 #2 (Red Hat Linux)) id 1WpzJm-0005sL-Dn; Thu, 29 May 2014 12:20:24 +0000 Received: from mchehab by smtp.w2.samsung.com with local (Exim 4.80.1) (envelope-from ) id 1WpzJi-0005BJ-Er; Thu, 29 May 2014 09:20:18 -0300 From: Mauro Carvalho Chehab Cc: Mauro Carvalho Chehab , Linux Media Mailing List , Mauro Carvalho Chehab Subject: [PATCH 2/5] dib7000p: rename dib7000p_attach to dib7000p_init Date: Thu, 29 May 2014 09:20:14 -0300 Message-Id: <1401366017-19874-3-git-send-email-m.chehab@samsung.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1401366017-19874-1-git-send-email-m.chehab@samsung.com> References: <1401366017-19874-1-git-send-email-m.chehab@samsung.com> To: unlisted-recipients:; (no To-header on input) Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Well, what we call as "foo_attach" is the method that should be called by the dvb_attach() macro. It should be noticed that the name "dvb_attach" is really a bad name and don't express what it does. dvb_attach() basically does three things, if the frontend is compiled as a module: - It lookups for the module that it is known to have the given symbol name and requests such module; - It increments the module usage (anonymously - so lsmod doesn't print who loaded the module); - after loading the module, it runs the function associated with the dynamic symbol. When compiled as builtin, it just calls the function given to it. As dvb_attach() increments refcount, it can't be (easily) called more than once for the same module, or the kernel will deny to remove the module, because refcount will never be zeroed. In other words, the function name given to dvb_attach() should be one single symbol that will always be called before any other function on that module to be used. For almost all DVB frontends, there's just one function. However, the dib7000p initialization can require up to 3 functions to be called: - dib7000p_get_i2c_master; - dib7000p_i2c_enumeration; - dib7000p_init (before this patch dib7000_attach). (plus a bunch of other functions that the bridge driver will need to call). As we need to get rid of all those direct calls, because they cause compilation breakages when bridge is builtin and frontend is module, we'll need to add a new function that will be the first one to be called, whatever initialization is needed. So, let's rename the function that probes and init the hardware to dib7000p_init. A latter patch will add a new dib7000p_attach that will be used as originally conceived by dvb_attach() way. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/dib7000p.c | 4 ++-- drivers/media/dvb-frontends/dib7000p.h | 4 ++-- drivers/media/pci/cx23885/cx23885-dvb.c | 2 +- drivers/media/usb/dvb-usb/cxusb.c | 2 +- drivers/media/usb/dvb-usb/dib0700_devices.c | 28 ++++++++++++++-------------- 5 files changed, 20 insertions(+), 20 deletions(-) diff --git a/drivers/media/dvb-frontends/dib7000p.c b/drivers/media/dvb-frontends/dib7000p.c index effb87f773b0..4b33bce3a4c6 100644 --- a/drivers/media/dvb-frontends/dib7000p.c +++ b/drivers/media/dvb-frontends/dib7000p.c @@ -2374,7 +2374,7 @@ int dib7090_slave_reset(struct dvb_frontend *fe) EXPORT_SYMBOL(dib7090_slave_reset); static struct dvb_frontend_ops dib7000p_ops; -struct dvb_frontend *dib7000p_attach(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib7000p_config *cfg) +struct dvb_frontend *dib7000p_init(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib7000p_config *cfg) { struct dvb_frontend *demod; struct dib7000p_state *st; @@ -2434,7 +2434,7 @@ error: kfree(st); return NULL; } -EXPORT_SYMBOL(dib7000p_attach); +EXPORT_SYMBOL(dib7000p_init); static struct dvb_frontend_ops dib7000p_ops = { .delsys = { SYS_DVBT }, diff --git a/drivers/media/dvb-frontends/dib7000p.h b/drivers/media/dvb-frontends/dib7000p.h index d08cdff59bdf..583c94e8eca5 100644 --- a/drivers/media/dvb-frontends/dib7000p.h +++ b/drivers/media/dvb-frontends/dib7000p.h @@ -47,7 +47,7 @@ struct dib7000p_config { #define DEFAULT_DIB7000P_I2C_ADDRESS 18 #if IS_ENABLED(CONFIG_DVB_DIB7000P) -extern struct dvb_frontend *dib7000p_attach(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib7000p_config *cfg); +extern struct dvb_frontend *dib7000p_init(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib7000p_config *cfg); extern struct i2c_adapter *dib7000p_get_i2c_master(struct dvb_frontend *, enum dibx000_i2c_interface, int); extern int dib7000p_i2c_enumeration(struct i2c_adapter *i2c, int no_of_demods, u8 default_addr, struct dib7000p_config cfg[]); extern int dib7000p_set_gpio(struct dvb_frontend *, u8 num, u8 dir, u8 val); @@ -65,7 +65,7 @@ extern int dib7000p_get_agc_values(struct dvb_frontend *fe, u16 *agc_global, u16 *agc1, u16 *agc2, u16 *wbd); extern int dib7000p_set_agc1_min(struct dvb_frontend *fe, u16 v); #else -static inline struct dvb_frontend *dib7000p_attach(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib7000p_config *cfg) +static inline struct dvb_frontend *dib7000p_init(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib7000p_config *cfg) { printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); return NULL; diff --git a/drivers/media/pci/cx23885/cx23885-dvb.c b/drivers/media/pci/cx23885/cx23885-dvb.c index 4be01b3bd4f5..69e526391c12 100644 --- a/drivers/media/pci/cx23885/cx23885-dvb.c +++ b/drivers/media/pci/cx23885/cx23885-dvb.c @@ -925,7 +925,7 @@ static int dvb_register(struct cx23885_tsport *port) break; case CX23885_BOARD_HAUPPAUGE_HVR1400: i2c_bus = &dev->i2c_bus[0]; - fe0->dvb.frontend = dvb_attach(dib7000p_attach, + fe0->dvb.frontend = dvb_attach(dib7000p_init, &i2c_bus->i2c_adap, 0x12, &hauppauge_hvr1400_dib7000_config); if (fe0->dvb.frontend != NULL) { diff --git a/drivers/media/usb/dvb-usb/cxusb.c b/drivers/media/usb/dvb-usb/cxusb.c index a1c641e18362..e81a2fd54960 100644 --- a/drivers/media/usb/dvb-usb/cxusb.c +++ b/drivers/media/usb/dvb-usb/cxusb.c @@ -1085,7 +1085,7 @@ static int cxusb_dualdig4_rev2_frontend_attach(struct dvb_usb_adapter *adap) return -ENODEV; } - adap->fe_adap[0].fe = dvb_attach(dib7000p_attach, &adap->dev->i2c_adap, 0x80, + adap->fe_adap[0].fe = dvb_attach(dib7000p_init, &adap->dev->i2c_adap, 0x80, &cxusb_dualdig4_rev2_config); if (adap->fe_adap[0].fe == NULL) return -EIO; diff --git a/drivers/media/usb/dvb-usb/dib0700_devices.c b/drivers/media/usb/dvb-usb/dib0700_devices.c index 10e0db8d1850..3585089c805c 100644 --- a/drivers/media/usb/dvb-usb/dib0700_devices.c +++ b/drivers/media/usb/dvb-usb/dib0700_devices.c @@ -281,7 +281,7 @@ static int stk7700P2_frontend_attach(struct dvb_usb_adapter *adap) } adap->fe_adap[0].fe = - dvb_attach(dib7000p_attach, &adap->dev->i2c_adap, + dvb_attach(dib7000p_init, &adap->dev->i2c_adap, 0x80 + (adap->id << 1), &stk7700d_dib7000p_mt2266_config[adap->id]); @@ -310,7 +310,7 @@ static int stk7700d_frontend_attach(struct dvb_usb_adapter *adap) } adap->fe_adap[0].fe = - dvb_attach(dib7000p_attach, &adap->dev->i2c_adap, + dvb_attach(dib7000p_init, &adap->dev->i2c_adap, 0x80 + (adap->id << 1), &stk7700d_dib7000p_mt2266_config[adap->id]); @@ -452,7 +452,7 @@ static int stk7700ph_frontend_attach(struct dvb_usb_adapter *adap) return -ENODEV; } - adap->fe_adap[0].fe = dvb_attach(dib7000p_attach, &adap->dev->i2c_adap, 0x80, + adap->fe_adap[0].fe = dvb_attach(dib7000p_init, &adap->dev->i2c_adap, 0x80, &stk7700ph_dib7700_xc3028_config); return adap->fe_adap[0].fe == NULL ? -ENODEV : 0; @@ -690,7 +690,7 @@ static int stk7700p_frontend_attach(struct dvb_usb_adapter *adap) st->mt2060_if1[0] = 1220; if (dib7000pc_detection(&adap->dev->i2c_adap)) { - adap->fe_adap[0].fe = dvb_attach(dib7000p_attach, &adap->dev->i2c_adap, 18, &stk7700p_dib7000p_config); + adap->fe_adap[0].fe = dvb_attach(dib7000p_init, &adap->dev->i2c_adap, 18, &stk7700p_dib7000p_config); st->is_dib7000pc = 1; } else adap->fe_adap[0].fe = dvb_attach(dib7000m_attach, &adap->dev->i2c_adap, 18, &stk7700p_dib7000m_config); @@ -961,7 +961,7 @@ static int stk7070p_frontend_attach(struct dvb_usb_adapter *adap) return -ENODEV; } - adap->fe_adap[0].fe = dvb_attach(dib7000p_attach, &adap->dev->i2c_adap, 0x80, + adap->fe_adap[0].fe = dvb_attach(dib7000p_init, &adap->dev->i2c_adap, 0x80, &dib7070p_dib7000p_config); return adap->fe_adap[0].fe == NULL ? -ENODEV : 0; } @@ -1013,7 +1013,7 @@ static int stk7770p_frontend_attach(struct dvb_usb_adapter *adap) return -ENODEV; } - adap->fe_adap[0].fe = dvb_attach(dib7000p_attach, &adap->dev->i2c_adap, 0x80, + adap->fe_adap[0].fe = dvb_attach(dib7000p_init, &adap->dev->i2c_adap, 0x80, &dib7770p_dib7000p_config); return adap->fe_adap[0].fe == NULL ? -ENODEV : 0; } @@ -2899,7 +2899,7 @@ static int nim7090_frontend_attach(struct dvb_usb_adapter *adap) err("%s: dib7000p_i2c_enumeration failed. Cannot continue\n", __func__); return -ENODEV; } - adap->fe_adap[0].fe = dvb_attach(dib7000p_attach, &adap->dev->i2c_adap, 0x80, &nim7090_dib7000p_config); + adap->fe_adap[0].fe = dvb_attach(dib7000p_init, &adap->dev->i2c_adap, 0x80, &nim7090_dib7000p_config); return adap->fe_adap[0].fe == NULL ? -ENODEV : 0; } @@ -2945,7 +2945,7 @@ static int tfe7090pvr_frontend0_attach(struct dvb_usb_adapter *adap) } dib0700_set_i2c_speed(adap->dev, 340); - adap->fe_adap[0].fe = dvb_attach(dib7000p_attach, &adap->dev->i2c_adap, 0x90, &tfe7090pvr_dib7000p_config[0]); + adap->fe_adap[0].fe = dvb_attach(dib7000p_init, &adap->dev->i2c_adap, 0x90, &tfe7090pvr_dib7000p_config[0]); if (adap->fe_adap[0].fe == NULL) return -ENODEV; @@ -2969,7 +2969,7 @@ static int tfe7090pvr_frontend1_attach(struct dvb_usb_adapter *adap) return -ENODEV; } - adap->fe_adap[0].fe = dvb_attach(dib7000p_attach, i2c, 0x92, &tfe7090pvr_dib7000p_config[1]); + adap->fe_adap[0].fe = dvb_attach(dib7000p_init, i2c, 0x92, &tfe7090pvr_dib7000p_config[1]); dib0700_set_i2c_speed(adap->dev, 200); return adap->fe_adap[0].fe == NULL ? -ENODEV : 0; @@ -3030,7 +3030,7 @@ static int tfe7790p_frontend_attach(struct dvb_usb_adapter *adap) __func__); return -ENODEV; } - adap->fe_adap[0].fe = dvb_attach(dib7000p_attach, &adap->dev->i2c_adap, + adap->fe_adap[0].fe = dvb_attach(dib7000p_init, &adap->dev->i2c_adap, 0x80, &tfe7790p_dib7000p_config); return adap->fe_adap[0].fe == NULL ? -ENODEV : 0; @@ -3115,13 +3115,13 @@ static int stk7070pd_frontend_attach0(struct dvb_usb_adapter *adap) return -ENODEV; } - adap->fe_adap[0].fe = dvb_attach(dib7000p_attach, &adap->dev->i2c_adap, 0x80, &stk7070pd_dib7000p_config[0]); + adap->fe_adap[0].fe = dvb_attach(dib7000p_init, &adap->dev->i2c_adap, 0x80, &stk7070pd_dib7000p_config[0]); return adap->fe_adap[0].fe == NULL ? -ENODEV : 0; } static int stk7070pd_frontend_attach1(struct dvb_usb_adapter *adap) { - adap->fe_adap[0].fe = dvb_attach(dib7000p_attach, &adap->dev->i2c_adap, 0x82, &stk7070pd_dib7000p_config[1]); + adap->fe_adap[0].fe = dvb_attach(dib7000p_init, &adap->dev->i2c_adap, 0x82, &stk7070pd_dib7000p_config[1]); return adap->fe_adap[0].fe == NULL ? -ENODEV : 0; } @@ -3181,7 +3181,7 @@ static int novatd_frontend_attach(struct dvb_usb_adapter *adap) } } - adap->fe_adap[0].fe = dvb_attach(dib7000p_attach, &dev->i2c_adap, + adap->fe_adap[0].fe = dvb_attach(dib7000p_init, &dev->i2c_adap, adap->id == 0 ? 0x80 : 0x82, &stk7070pd_dib7000p_config[adap->id]); @@ -3402,7 +3402,7 @@ static int pctv340e_frontend_attach(struct dvb_usb_adapter *adap) return -ENODEV; } - adap->fe_adap[0].fe = dvb_attach(dib7000p_attach, &adap->dev->i2c_adap, 0x12, + adap->fe_adap[0].fe = dvb_attach(dib7000p_init, &adap->dev->i2c_adap, 0x12, &pctv_340e_config); st->is_dib7000pc = 1;