V4L/DVB (9576): cx88-dvb: MFE attachment clean-up for HVR-3000/4000

This cleans-up MFE attachment for these cards plus
two cases of potential memory leak on attachment
failure.

Signed-off-by: Darron Broad <darron@kewl.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/cx88/cx88-dvb.c b/drivers/media/video/cx88/cx88-dvb.c
index 4629473..e5bbc7b 100644 (file)
--- a/drivers/media/video/cx88/cx88-dvb.c
+++ b/drivers/media/video/cx88/cx88-dvb.c
@@ -606,7 +606,7 @@ static int dvb_register(struct cx8802_dev *dev)
        /* Get the first frontend */
        fe0 = videobuf_dvb_get_frontend(&dev->frontends, 1);
        if (!fe0)
-               return -EINVAL;
+               goto frontend_detach;
 
        /* multi-frontend gate control is undefined or defaults to fe0 */
        dev->frontends.gate = 0;
@@ -653,38 +653,35 @@ static int dvb_register(struct cx8802_dev *dev)
                }
                break;
        case CX88_BOARD_HAUPPAUGE_HVR3000:
+               /* MFE frontend 1 */
+               mfe_shared = 1;
+               dev->frontends.gate = 2;
                /* DVB-S init */
                fe0->dvb.frontend = dvb_attach(cx24123_attach,
-                              &hauppauge_novas_config,
-                              &dev->core->i2c_adap);
+                                       &hauppauge_novas_config,
+                                       &dev->core->i2c_adap);
                if (fe0->dvb.frontend) {
-                       if (!dvb_attach(isl6421_attach, fe0->dvb.frontend,
-                       &dev->core->i2c_adap, 0x08, ISL6421_DCL, 0x00)) {
-                               dprintk( 1, "%s(): HVR3000 - DVB-S LNB Init: failed\n", __func__);
-                       }
-               } else {
-                       dprintk( 1, "%s(): HVR3000 - DVB-S Init: failed\n", __func__);
+                       if (!dvb_attach(isl6421_attach,
+                                       fe0->dvb.frontend,
+                                       &dev->core->i2c_adap,
+                                       0x08, ISL6421_DCL, 0x00))
+                               goto frontend_detach;
                }
-               /* DVB-T init */
+               /* MFE frontend 2 */
                fe1 = videobuf_dvb_get_frontend(&dev->frontends, 2);
-               if (fe1) {
-                       dev->frontends.gate = 2;
-                       mfe_shared = 1;
-                       fe1->dvb.frontend = dvb_attach(cx22702_attach,
-                               &hauppauge_hvr_config,
-                               &dev->core->i2c_adap);
-                       if (fe1->dvb.frontend) {
-                               fe1->dvb.frontend->id = 1;
-                               if(!dvb_attach(simple_tuner_attach, fe1->dvb.frontend,
-                                               &dev->core->i2c_adap, 0x61,
-                                               TUNER_PHILIPS_FMD1216ME_MK3)) {
-                                       dprintk( 1, "%s(): HVR3000 - DVB-T misc Init: failed\n", __func__);
-                               }
-                       } else {
-                               dprintk( 1, "%s(): HVR3000 - DVB-T Init: failed\n", __func__);
-                       }
-               } else {
-                       dprintk( 1, "%s(): HVR3000 - DVB-T Init: can't find frontend 2.\n", __func__);
+               if (!fe1)
+                       goto frontend_detach;
+               /* DVB-T init */
+               fe1->dvb.frontend = dvb_attach(cx22702_attach,
+                                       &hauppauge_hvr_config,
+                                       &dev->core->i2c_adap);
+               if (fe1->dvb.frontend) {
+                       fe1->dvb.frontend->id = 1;
+                       if (!dvb_attach(simple_tuner_attach,
+                                       fe1->dvb.frontend,
+                                       &dev->core->i2c_adap,
+                                       0x61, TUNER_PHILIPS_FMD1216ME_MK3))
+                               goto frontend_detach;
                }
                break;
        case CX88_BOARD_DVICO_FUSIONHDTV_DVB_T_PLUS:
@@ -998,48 +995,47 @@ static int dvb_register(struct cx8802_dev *dev)
                }
                break;
        case CX88_BOARD_HAUPPAUGE_HVR4000:
+               /* MFE frontend 1 */
+               mfe_shared = 1;
+               dev->frontends.gate = 2;
                /* DVB-S/S2 Init */
                fe0->dvb.frontend = dvb_attach(cx24116_attach,
-                       &hauppauge_hvr4000_config,
-                       &dev->core->i2c_adap);
+                                       &hauppauge_hvr4000_config,
+                                       &dev->core->i2c_adap);
                if (fe0->dvb.frontend) {
-                       if(!dvb_attach(isl6421_attach, fe0->dvb.frontend,
-                               &dev->core->i2c_adap, 0x08, ISL6421_DCL, 0x00)) {
-                               dprintk( 1, "%s(): HVR4000 - DVB-S LNB Init: failed\n", __func__);
-                       }
-               } else {
-                       dprintk( 1, "%s(): HVR4000 - DVB-S Init: failed\n", __func__);
+                       if (!dvb_attach(isl6421_attach,
+                                       fe0->dvb.frontend,
+                                       &dev->core->i2c_adap,
+                                       0x08, ISL6421_DCL, 0x00))
+                               goto frontend_detach;
                }
-               /* DVB-T Init */
+               /* MFE frontend 2 */
                fe1 = videobuf_dvb_get_frontend(&dev->frontends, 2);
-               if (fe1) {
-                       dev->frontends.gate = 2;
-                       mfe_shared = 1;
-                       fe1->dvb.frontend = dvb_attach(cx22702_attach,
-                               &hauppauge_hvr_config,
-                               &dev->core->i2c_adap);
-                       if (fe1->dvb.frontend) {
-                               fe1->dvb.frontend->id = 1;
-                               if(!dvb_attach(simple_tuner_attach, fe1->dvb.frontend,
-                                       &dev->core->i2c_adap, 0x61,
-                                       TUNER_PHILIPS_FMD1216ME_MK3)) {
-                                       dprintk( 1, "%s(): HVR4000 - DVB-T misc Init: failed\n", __func__);
-                               }
-                       } else {
-                               dprintk( 1, "%s(): HVR4000 - DVB-T Init: failed\n", __func__);
-                       }
-               } else {
-                       dprintk( 1, "%s(): HVR4000 - DVB-T Init: can't find frontend 2.\n", __func__);
+               if (!fe1)
+                       goto frontend_detach;
+               /* DVB-T Init */
+               fe1->dvb.frontend = dvb_attach(cx22702_attach,
+                                       &hauppauge_hvr_config,
+                                       &dev->core->i2c_adap);
+               if (fe1->dvb.frontend) {
+                       fe1->dvb.frontend->id = 1;
+                       if (!dvb_attach(simple_tuner_attach,
+                                       fe1->dvb.frontend,
+                                       &dev->core->i2c_adap,
+                                       0x61, TUNER_PHILIPS_FMD1216ME_MK3))
+                               goto frontend_detach;
                }
                break;
        case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
                fe0->dvb.frontend = dvb_attach(cx24116_attach,
-                       &hauppauge_hvr4000_config,
-                       &dev->core->i2c_adap);
+                                       &hauppauge_hvr4000_config,
+                                       &dev->core->i2c_adap);
                if (fe0->dvb.frontend) {
-                       dvb_attach(isl6421_attach, fe0->dvb.frontend,
-                               &dev->core->i2c_adap,
-                               0x08, ISL6421_DCL, 0x00);
+                       if (!dvb_attach(isl6421_attach,
+                                       fe0->dvb.frontend,
+                                       &dev->core->i2c_adap,
+                                       0x08, ISL6421_DCL, 0x00))
+                               goto frontend_detach;
                }
                break;
        case CX88_BOARD_PROF_6200:
@@ -1095,7 +1091,7 @@ static int dvb_register(struct cx8802_dev *dev)
                printk(KERN_ERR
                       "%s/2: frontend initialization failed\n",
                       core->name);
-               return -EINVAL;
+               goto frontend_detach;
        }
        /* define general-purpose callback pointer */
        fe0->dvb.frontend->callback = cx88_tuner_callback;