diff options
Diffstat (limited to 'drivers/media/IR/ir-keytable.c')
| -rw-r--r-- | drivers/media/IR/ir-keytable.c | 61 |
1 files changed, 40 insertions, 21 deletions
diff --git a/drivers/media/IR/ir-keytable.c b/drivers/media/IR/ir-keytable.c index b521ed9d6e2..0903f539bf6 100644 --- a/drivers/media/IR/ir-keytable.c +++ b/drivers/media/IR/ir-keytable.c @@ -65,7 +65,7 @@ exit: * In order to reduce the quantity of table resizes, it has a minimum * table size of IR_TAB_MIN_SIZE. */ -int ir_roundup_tablesize(int n_elems) +static int ir_roundup_tablesize(int n_elems) { size_t size; @@ -81,7 +81,6 @@ int ir_roundup_tablesize(int n_elems) return n_elems; } -EXPORT_SYMBOL_GPL(ir_roundup_tablesize); /** * ir_copy_table() - copies a keytable, discarding the unused entries @@ -89,9 +88,11 @@ EXPORT_SYMBOL_GPL(ir_roundup_tablesize); * @origin: origin table * * Copies all entries where the keycode is not KEY_UNKNOWN/KEY_RESERVED + * Also copies table size and table protocol. + * NOTE: It shouldn't copy the lock field */ -int ir_copy_table(struct ir_scancode_table *destin, +static int ir_copy_table(struct ir_scancode_table *destin, const struct ir_scancode_table *origin) { int i, j = 0; @@ -105,12 +106,12 @@ int ir_copy_table(struct ir_scancode_table *destin, j++; } destin->size = j; + destin->ir_type = origin->ir_type; IR_dprintk(1, "Copied %d scancodes to the new keycode table\n", destin->size); return 0; } -EXPORT_SYMBOL_GPL(ir_copy_table); /** * ir_getkeycode() - get a keycode at the evdev scancode ->keycode table @@ -184,18 +185,14 @@ static void ir_delete_key(struct ir_scancode_table *rc_tab, int elem) int newsize = rc_tab->size - 1; int resize = ir_is_resize_needed(rc_tab, newsize); struct ir_scancode *oldkeymap = rc_tab->scan; - struct ir_scancode *newkeymap; + struct ir_scancode *newkeymap = NULL; - if (resize) { + if (resize) newkeymap = kzalloc(ir_roundup_tablesize(newsize) * sizeof(*newkeymap), GFP_ATOMIC); - /* There's no memory for resize. Keep the old table */ - if (!newkeymap) - resize = 0; - } - - if (!resize) { + /* There's no memory for resize. Keep the old table */ + if (!resize || !newkeymap) { newkeymap = oldkeymap; /* We'll modify the live table. Lock it */ @@ -399,12 +396,14 @@ EXPORT_SYMBOL_GPL(ir_g_keycode_from_table); * @input_dev: the struct input_dev descriptor of the device * @rc_tab: the struct ir_scancode_table table of scancode/keymap * - * This routine is used to initialize the input infrastructure to work with - * an IR. - * It should be called before registering the IR device. + * This routine is used to initialize the input infrastructure + * to work with an IR. + * It will register the input/evdev interface for the device and + * register the syfs code for IR class */ int ir_input_register(struct input_dev *input_dev, - struct ir_scancode_table *rc_tab) + const struct ir_scancode_table *rc_tab, + const struct ir_dev_props *props) { struct ir_input_dev *ir_dev; struct ir_scancode *keymap = rc_tab->scan; @@ -417,19 +416,22 @@ int ir_input_register(struct input_dev *input_dev, if (!ir_dev) return -ENOMEM; - spin_lock_init(&rc_tab->lock); + spin_lock_init(&ir_dev->rc_tab.lock); ir_dev->rc_tab.size = ir_roundup_tablesize(rc_tab->size); ir_dev->rc_tab.scan = kzalloc(ir_dev->rc_tab.size * sizeof(struct ir_scancode), GFP_KERNEL); - if (!ir_dev->rc_tab.scan) + if (!ir_dev->rc_tab.scan) { + kfree(ir_dev); return -ENOMEM; + } IR_dprintk(1, "Allocated space for %d keycode entries (%zd bytes)\n", ir_dev->rc_tab.size, ir_dev->rc_tab.size * sizeof(ir_dev->rc_tab.scan)); ir_copy_table(&ir_dev->rc_tab, rc_tab); + ir_dev->props = props; /* set the bits for the keys */ IR_dprintk(1, "key map size: %d\n", rc_tab->size); @@ -447,16 +449,31 @@ int ir_input_register(struct input_dev *input_dev, input_set_drvdata(input_dev, ir_dev); rc = input_register_device(input_dev); + if (rc < 0) + goto err; + + rc = ir_register_class(input_dev); if (rc < 0) { - kfree(rc_tab->scan); - kfree(ir_dev); - input_set_drvdata(input_dev, NULL); + input_unregister_device(input_dev); + goto err; } + return 0; + +err: + kfree(rc_tab->scan); + kfree(ir_dev); + input_set_drvdata(input_dev, NULL); return rc; } EXPORT_SYMBOL_GPL(ir_input_register); +/** + * ir_input_unregister() - unregisters IR and frees resources + * @input_dev: the struct input_dev descriptor of the device + + * This routine is used to free memory and de-register interfaces. + */ void ir_input_unregister(struct input_dev *dev) { struct ir_input_dev *ir_dev = input_get_drvdata(dev); @@ -472,6 +489,8 @@ void ir_input_unregister(struct input_dev *dev) kfree(rc_tab->scan); rc_tab->scan = NULL; + ir_unregister_class(dev); + kfree(ir_dev); input_unregister_device(dev); } |