V4L/DVB (13537): ir: Prepare the code for dynamic keycode table allocation

Currently, the IR table is initialized by calling ir_input_init(). However,
this function doesn't return any error code, nor has a function to be called
when de-initializing the IR's.

Change the return argment to integer and make sure that each driver will
handle the error code. Also adds a function to free any resources that may
be allocating there: ir_input_free().

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

10 files changed, 74 insertions, 13 deletions

diff --git a/drivers/media/common/ir-functions.c b/drivers/media/common/ir-functions.c
index 29885c2893d..b31bd27da37 100644
--- a/drivers/media/common/ir-functions.c
+++ b/drivers/media/common/ir-functions.c
@@ -54,11 +54,13 @@ static void ir_input_key_event(struct input_dev *dev, struct ir_input_state *ir)
 
 /* -------------------------------------------------------------------------- */
 
-void ir_input_init(struct input_dev *dev, struct ir_input_state *ir,
+int ir_input_init(struct input_dev *dev, struct ir_input_state *ir,
                    int ir_type, struct ir_scancode_table *ir_codes)
 {
         ir->ir_type = ir_type;
 
+        /* FIXME: Add the proper code to dynamically allocate IR table */
+
         ir_set_keycode_table(dev, ir_codes);
 
         clear_bit(0, dev->keybit);
@@ -66,9 +68,17 @@ void ir_input_init(struct input_dev *dev, struct ir_input_state *ir,
         set_bit(EV_KEY, dev->evbit);
         if (repeat)
                 set_bit(EV_REP, dev->evbit);
+
+        return 0;
 }
 EXPORT_SYMBOL_GPL(ir_input_init);
 
+void ir_input_free(struct input_dev *input_dev)
+{
+        /* FIXME: Add the proper code to free allocated resources */
+}
+EXPORT_SYMBOL_GPL(ir_input_free);
+
 void ir_input_nokey(struct input_dev *dev, struct ir_input_state *ir)
 {
         if (ir->keypressed) {
diff --git a/drivers/media/dvb/dm1105/dm1105.c b/drivers/media/dvb/dm1105/dm1105.c
index 4c28632f94c..53e3f2a7d31 100644
--- a/drivers/media/dvb/dm1105/dm1105.c
+++ b/drivers/media/dvb/dm1105/dm1105.c
@@ -589,7 +589,12 @@ int __devinit dm1105_ir_init(struct dm1105dvb *dm1105)
         snprintf(dm1105->ir.input_phys, sizeof(dm1105->ir.input_phys),
                 "pci-%s/ir0", pci_name(dm1105->pdev));
 
-        ir_input_init(input_dev, &dm1105->ir.ir, ir_type, ir_codes);
+        err = ir_input_init(input_dev, &dm1105->ir.ir, ir_type, ir_codes);
+        if (err < 0) {
+                input_free_device(input_dev);
+                return err;
+        }
+
         input_dev->name = "DVB on-card IR receiver";
         input_dev->phys = dm1105->ir.input_phys;
         input_dev->id.bustype = BUS_PCI;
@@ -608,6 +613,7 @@ int __devinit dm1105_ir_init(struct dm1105dvb *dm1105)
 
         err = input_register_device(input_dev);
         if (err) {
+                ir_input_free(input_dev);
                 input_free_device(input_dev);
                 return err;
         }
@@ -617,8 +623,8 @@ int __devinit dm1105_ir_init(struct dm1105dvb *dm1105)
 
 void __devexit dm1105_ir_exit(struct dm1105dvb *dm1105)
 {
+        ir_input_free(dm1105->ir.input_dev);
         input_unregister_device(dm1105->ir.input_dev);
-
 }
 
 static int __devinit dm1105dvb_hw_init(struct dm1105dvb *dm1105dvb)
diff --git a/drivers/media/dvb/ttpci/budget-ci.c b/drivers/media/dvb/ttpci/budget-ci.c
index adc4b954e5a..7d193ebc0ae 100644
--- a/drivers/media/dvb/ttpci/budget-ci.c
+++ b/drivers/media/dvb/ttpci/budget-ci.c
@@ -224,8 +224,10 @@ static int msp430_ir_init(struct budget_ci *budget_ci)
         case 0x1011:
         case 0x1012:
                 /* The hauppauge keymap is a superset of these remotes */
-                ir_input_init(input_dev, &budget_ci->ir.state,
+                error = ir_input_init(input_dev, &budget_ci->ir.state,
                               IR_TYPE_RC5, &ir_codes_hauppauge_new_table);
+                if (error < 0)
+                        goto out2;
 
                 if (rc5_device < 0)
                         budget_ci->ir.rc5_device = 0x1f;
@@ -236,8 +238,10 @@ static int msp430_ir_init(struct budget_ci *budget_ci)
         case 0x1017:
         case 0x101a:
                 /* for the Technotrend 1500 bundled remote */
-                ir_input_init(input_dev, &budget_ci->ir.state,
+                error = ir_input_init(input_dev, &budget_ci->ir.state,
                               IR_TYPE_RC5, &ir_codes_tt_1500_table);
+                if (error < 0)
+                        goto out2;
 
                 if (rc5_device < 0)
                         budget_ci->ir.rc5_device = IR_DEVICE_ANY;
@@ -246,8 +250,10 @@ static int msp430_ir_init(struct budget_ci *budget_ci)
                 break;
         default:
                 /* unknown remote */
-                ir_input_init(input_dev, &budget_ci->ir.state,
+                error = ir_input_init(input_dev, &budget_ci->ir.state,
                               IR_TYPE_RC5, &ir_codes_budget_ci_old_table);
+                if (error < 0)
+                        goto out2;
 
                 if (rc5_device < 0)
                         budget_ci->ir.rc5_device = IR_DEVICE_ANY;
@@ -280,6 +286,7 @@ static int msp430_ir_init(struct budget_ci *budget_ci)
         return 0;
 
 out2:
+        ir_input_free(input_dev);
         input_free_device(input_dev);
 out1:
         return error;
@@ -297,6 +304,7 @@ static void msp430_ir_deinit(struct budget_ci *budget_ci)
         del_timer_sync(&dev->timer);
         ir_input_nokey(dev, &budget_ci->ir.state);
 
+        ir_input_free(dev);
         input_unregister_device(dev);
 }
 
diff --git a/drivers/media/video/bt8xx/bttv-input.c b/drivers/media/video/bt8xx/bttv-input.c
index 62408ccf34c..84a957e52c4 100644
--- a/drivers/media/video/bt8xx/bttv-input.c
+++ b/drivers/media/video/bt8xx/bttv-input.c
@@ -368,7 +368,10 @@ int bttv_input_init(struct bttv *btv)
         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
                  pci_name(btv->c.pci));
 
-        ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+        err = ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+        if (err < 0)
+                goto err_out_free;
+
         input_dev->name = ir->name;
         input_dev->phys = ir->phys;
         input_dev->id.bustype = BUS_PCI;
@@ -400,6 +403,7 @@ int bttv_input_init(struct bttv *btv)
         bttv_ir_stop(btv);
         btv->remote = NULL;
  err_out_free:
+        ir_input_free(input_dev);
         input_free_device(input_dev);
         kfree(ir);
         return err;
@@ -411,6 +415,7 @@ void bttv_input_fini(struct bttv *btv)
                 return;
 
         bttv_ir_stop(btv);
+        ir_input_free(btv->remote->dev);
         input_unregister_device(btv->remote->dev);
         kfree(btv->remote);
         btv->remote = NULL;
diff --git a/drivers/media/video/cx231xx/cx231xx-input.c b/drivers/media/video/cx231xx/cx231xx-input.c
index 58dd39bc678..cd135f01b9c 100644
--- a/drivers/media/video/cx231xx/cx231xx-input.c
+++ b/drivers/media/video/cx231xx/cx231xx-input.c
@@ -197,7 +197,11 @@ int cx231xx_ir_init(struct cx231xx *dev)
         usb_make_path(dev->udev, ir->phys, sizeof(ir->phys));
         strlcat(ir->phys, "/input0", sizeof(ir->phys));
 
-        ir_input_init(input_dev, &ir->ir, IR_TYPE_OTHER, dev->board.ir_codes);
+        err = ir_input_init(input_dev, &ir->ir, IR_TYPE_OTHER,
+                            dev->board.ir_codes);
+        if (err < 0)
+                goto err_out_free;
+
         input_dev->name = ir->name;
         input_dev->phys = ir->phys;
         input_dev->id.bustype = BUS_USB;
@@ -222,6 +226,7 @@ err_out_stop:
         cx231xx_ir_stop(ir);
         dev->ir = NULL;
 err_out_free:
+        ir_input_free(input_dev);
         input_free_device(input_dev);
         kfree(ir);
         return err;
@@ -236,6 +241,7 @@ int cx231xx_ir_fini(struct cx231xx *dev)
                 return 0;
 
         cx231xx_ir_stop(ir);
+        ir_input_free(ir->input);
         input_unregister_device(ir->input);
         kfree(ir);
 
diff --git a/drivers/media/video/cx23885/cx23885-input.c b/drivers/media/video/cx23885/cx23885-input.c
index fea882d1fbc..469e083dd5f 100644
--- a/drivers/media/video/cx23885/cx23885-input.c
+++ b/drivers/media/video/cx23885/cx23885-input.c
@@ -377,7 +377,10 @@ int cx23885_input_init(struct cx23885_dev *dev)
                  cx23885_boards[dev->board].name);
         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(dev->pci));
 
-        ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+        ret = ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+        if (ret < 0)
+                goto err_out_free;
+
         input_dev->name = ir->name;
         input_dev->phys = ir->phys;
         input_dev->id.bustype = BUS_PCI;
@@ -404,6 +407,7 @@ err_out_stop:
         cx23885_input_ir_stop(dev);
         dev->ir_input = NULL;
 err_out_free:
+        ir_input_free(input_dev);
         input_free_device(input_dev);
         kfree(ir);
         return ret;
@@ -416,6 +420,7 @@ void cx23885_input_fini(struct cx23885_dev *dev)
 
         if (dev->ir_input == NULL)
                 return;
+        ir_input_free(dev->ir_input->dev);
         input_unregister_device(dev->ir_input->dev);
         kfree(dev->ir_input);
         dev->ir_input = NULL;
diff --git a/drivers/media/video/cx88/cx88-input.c b/drivers/media/video/cx88/cx88-input.c
index 7b2066415d7..92b8cdf9fb8 100644
--- a/drivers/media/video/cx88/cx88-input.c
+++ b/drivers/media/video/cx88/cx88-input.c
@@ -360,7 +360,10 @@ int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
         snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
 
-        ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+        err = ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+        if (err < 0)
+                goto err_out_free;
+
         input_dev->name = ir->name;
         input_dev->phys = ir->phys;
         input_dev->id.bustype = BUS_PCI;
@@ -390,6 +393,7 @@ int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
         cx88_ir_stop(core, ir);
         core->ir = NULL;
  err_out_free:
+        ir_input_free(input_dev);
         input_free_device(input_dev);
         kfree(ir);
         return err;
@@ -404,6 +408,7 @@ int cx88_ir_fini(struct cx88_core *core)
                 return 0;
 
         cx88_ir_stop(core, ir);
+        ir_input_free(ir->input);
         input_unregister_device(ir->input);
         kfree(ir);
 
diff --git a/drivers/media/video/em28xx/em28xx-input.c b/drivers/media/video/em28xx/em28xx-input.c
index 5550de9c669..d96ec7c09dc 100644
--- a/drivers/media/video/em28xx/em28xx-input.c
+++ b/drivers/media/video/em28xx/em28xx-input.c
@@ -367,7 +367,11 @@ int em28xx_ir_init(struct em28xx *dev)
         usb_make_path(dev->udev, ir->phys, sizeof(ir->phys));
         strlcat(ir->phys, "/input0", sizeof(ir->phys));
 
-        ir_input_init(input_dev, &ir->ir, IR_TYPE_OTHER, dev->board.ir_codes);
+        err = ir_input_init(input_dev, &ir->ir, IR_TYPE_OTHER,
+                             dev->board.ir_codes);
+        if (err < 0)
+                goto err_out_free;
+
         input_dev->name = ir->name;
         input_dev->phys = ir->phys;
         input_dev->id.bustype = BUS_USB;
@@ -392,6 +396,7 @@ int em28xx_ir_init(struct em28xx *dev)
         em28xx_ir_stop(ir);
         dev->ir = NULL;
  err_out_free:
+        ir_input_free(input_dev);
         input_free_device(input_dev);
         kfree(ir);
         return err;
@@ -406,6 +411,7 @@ int em28xx_ir_fini(struct em28xx *dev)
                 return 0;
 
         em28xx_ir_stop(ir);
+        ir_input_free(ir->input);
         input_unregister_device(ir->input);
         kfree(ir);
 
diff --git a/drivers/media/video/ir-kbd-i2c.c b/drivers/media/video/ir-kbd-i2c.c
index 9c6d0ae58b1..64360d26b32 100644
--- a/drivers/media/video/ir-kbd-i2c.c
+++ b/drivers/media/video/ir-kbd-i2c.c
@@ -437,7 +437,10 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
                  dev_name(&client->dev));
 
         /* init + register input device */
-        ir_input_init(input_dev, &ir->ir, ir_type, ir->ir_codes);
+        err = ir_input_init(input_dev, &ir->ir, ir_type, ir->ir_codes);
+        if (err < 0)
+                goto err_out_free;
+
         input_dev->id.bustype = BUS_I2C;
         input_dev->name       = ir->name;
         input_dev->phys       = ir->phys;
@@ -456,6 +459,7 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
         return 0;
 
  err_out_free:
+        ir_input_free(input_dev);
         input_free_device(input_dev);
         kfree(ir);
         return err;
@@ -469,6 +473,7 @@ static int ir_remove(struct i2c_client *client)
         cancel_delayed_work_sync(&ir->work);
 
         /* unregister device */
+        ir_input_free(ir->input);
         input_unregister_device(ir->input);
 
         /* free memory */
diff --git a/drivers/media/video/saa7134/saa7134-input.c b/drivers/media/video/saa7134/saa7134-input.c
index 439f3d54d00..744918b1cd4 100644
--- a/drivers/media/video/saa7134/saa7134-input.c
+++ b/drivers/media/video/saa7134/saa7134-input.c
@@ -652,7 +652,10 @@ int saa7134_input_init1(struct saa7134_dev *dev)
         snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
                  pci_name(dev->pci));
 
-        ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+        err = ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
+        if (err < 0)
+                goto err_out_free;
+
         input_dev->name = ir->name;
         input_dev->phys = ir->phys;
         input_dev->id.bustype = BUS_PCI;
@@ -683,6 +686,7 @@ int saa7134_input_init1(struct saa7134_dev *dev)
         saa7134_ir_stop(dev);
         dev->remote = NULL;
  err_out_free:
+        ir_input_free(input_dev);
         input_free_device(input_dev);
         kfree(ir);
         return err;
@@ -694,6 +698,7 @@ void saa7134_input_fini(struct saa7134_dev *dev)
                 return;
 
         saa7134_ir_stop(dev);
+        ir_input_free(dev->remote->dev);
         input_unregister_device(dev->remote->dev);
         kfree(dev->remote);
         dev->remote = NULL;