Signed-off-by: Thomas Schoebel-Theuer <[email protected]>
---
 drivers/block/mars/brick.c | 801 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 801 insertions(+)
 create mode 100644 drivers/block/mars/brick.c

diff --git a/drivers/block/mars/brick.c b/drivers/block/mars/brick.c
new file mode 100644
index 0000000..8826a0d
--- /dev/null
+++ b/drivers/block/mars/brick.c
@@ -0,0 +1,801 @@
+/*  (c) 2010 Thomas Schoebel-Theuer / 1&1 Internet AG */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/string.h>
+
+#define _STRATEGY
+
+#include <linux/brick/brick.h>
+#include <linux/brick/brick_mem.h>
+
+/************************************************************/
+
+/*  init / exit functions */
+
+void _generic_output_init(struct generic_brick *brick,
+       const struct generic_output_type *type,
+       struct generic_output *output)
+{
+       output->brick = brick;
+       output->type = type;
+       output->ops = type->master_ops;
+       output->nr_connected = 0;
+       INIT_LIST_HEAD(&output->output_head);
+}
+EXPORT_SYMBOL_GPL(_generic_output_init);
+
+void _generic_output_exit(struct generic_output *output)
+{
+       list_del_init(&output->output_head);
+       output->brick = NULL;
+       output->type = NULL;
+       output->ops = NULL;
+       output->nr_connected = 0;
+}
+EXPORT_SYMBOL_GPL(_generic_output_exit);
+
+int generic_brick_init(const struct generic_brick_type *type, struct 
generic_brick *brick)
+{
+       brick->aspect_context.brick_index = get_brick_nr();
+       brick->type = type;
+       brick->ops = type->master_ops;
+       brick->nr_inputs = 0;
+       brick->nr_outputs = 0;
+       brick->power.off_led = true;
+       init_waitqueue_head(&brick->power.event);
+       INIT_LIST_HEAD(&brick->tmp_head);
+       return 0;
+}
+EXPORT_SYMBOL_GPL(generic_brick_init);
+
+void generic_brick_exit(struct generic_brick *brick)
+{
+       list_del_init(&brick->tmp_head);
+       brick->type = NULL;
+       brick->ops = NULL;
+       brick->nr_inputs = 0;
+       brick->nr_outputs = 0;
+       put_brick_nr(brick->aspect_context.brick_index);
+}
+EXPORT_SYMBOL_GPL(generic_brick_exit);
+
+int generic_input_init(struct generic_brick *brick,
+       int index,
+       const struct generic_input_type *type,
+       struct generic_input *input)
+{
+       if (index < 0 || index >= brick->type->max_inputs)
+               return -EINVAL;
+       if (brick->inputs[index])
+               return -EEXIST;
+       input->brick = brick;
+       input->type = type;
+       input->connect = NULL;
+       INIT_LIST_HEAD(&input->input_head);
+       brick->inputs[index] = input;
+       brick->nr_inputs++;
+       return 0;
+}
+EXPORT_SYMBOL_GPL(generic_input_init);
+
+void generic_input_exit(struct generic_input *input)
+{
+       list_del_init(&input->input_head);
+       input->brick = NULL;
+       input->type = NULL;
+       input->connect = NULL;
+}
+EXPORT_SYMBOL_GPL(generic_input_exit);
+
+int generic_output_init(struct generic_brick *brick,
+       int index,
+       const struct generic_output_type *type,
+       struct generic_output *output)
+{
+       if (index < 0 || index >= brick->type->max_outputs)
+               return -ENOMEM;
+       if (brick->outputs[index])
+               return -EEXIST;
+       _generic_output_init(brick, type, output);
+       brick->outputs[index] = output;
+       brick->nr_outputs++;
+       return 0;
+}
+EXPORT_SYMBOL_GPL(generic_output_init);
+
+int generic_size(const struct generic_brick_type *brick_type)
+{
+       int size = brick_type->brick_size;
+       int i;
+
+       size += brick_type->max_inputs * sizeof(void *);
+       for (i = 0; i < brick_type->max_inputs; i++)
+               size += brick_type->default_input_types[i]->input_size;
+       size += brick_type->max_outputs * sizeof(void *);
+       for (i = 0; i < brick_type->max_outputs; i++)
+               size += brick_type->default_output_types[i]->output_size;
+       return size;
+}
+EXPORT_SYMBOL_GPL(generic_size);
+
+int generic_connect(struct generic_input *input, struct generic_output *output)
+{
+       BRICK_DBG("generic_connect(input=%p, output=%p)\n", input, output);
+       if (unlikely(!input || !output))
+               return -EINVAL;
+       if (unlikely(input->connect))
+               return -EEXIST;
+       if (unlikely(!list_empty(&input->input_head)))
+               return -EINVAL;
+       /*  helps only against the most common errors */
+       if (unlikely(input->brick == output->brick))
+               return -EDEADLK;
+
+       input->connect = output;
+       output->nr_connected++;
+       list_add(&input->input_head, &output->output_head);
+       return 0;
+}
+EXPORT_SYMBOL_GPL(generic_connect);
+
+int generic_disconnect(struct generic_input *input)
+{
+       struct generic_output *connect;
+
+       BRICK_DBG("generic_disconnect(input=%p)\n", input);
+       if (!input)
+               return -EINVAL;
+       connect = input->connect;
+       if (connect) {
+               connect->nr_connected--;
+               input->connect = NULL;
+               list_del_init(&input->input_head);
+       }
+       return 0;
+}
+EXPORT_SYMBOL_GPL(generic_disconnect);
+
+/************************************************************/
+
+/*  general */
+
+int _brick_msleep(int msecs, bool shorten)
+{
+       unsigned long timeout;
+
+       flush_signals(current);
+       if (msecs <= 0) {
+               schedule();
+               return 0;
+       }
+       timeout = msecs_to_jiffies(msecs) + 1;
+
+       timeout = schedule_timeout_interruptible(timeout);
+
+       if (!shorten) {
+               while ((long)timeout > 0)
+                       timeout = schedule_timeout_uninterruptible(timeout);
+       }
+
+       return jiffies_to_msecs(timeout);
+}
+EXPORT_SYMBOL_GPL(_brick_msleep);
+
+struct kthread {
+       unsigned long flags;
+       unsigned int cpu;
+       void *data;
+       struct completion parked;
+       struct completion exited;
+};
+
+enum KTHREAD_BITS {
+       KTHREAD_IS_PER_CPU = 0,
+       KTHREAD_SHOULD_STOP,
+       KTHREAD_SHOULD_PARK,
+       KTHREAD_IS_PARKED,
+};
+
+#define to_kthread(tsk)                                                        
\
+       container_of((tsk)->vfork_done, struct kthread, exited)
+
+/**
+ * kthread_stop_nowait - like kthread_stop(), but don't wait for termination.
+ * @k: thread created by kthread_create().
+ *
+ * If threadfn() may call do_exit() itself, the caller must ensure
+ * task_struct can't go away.
+ *
+ * Therefore, you must not call this twice (or after kthread_stop()), at least
+ * if you don't get_task_struct() yourself.
+ */
+static struct kthread *task_get_live_kthread(struct task_struct *k)
+{
+       struct kthread *kthread;
+
+       get_task_struct(k);
+       kthread = to_kthread(k);
+       /* It might have exited */
+       barrier();
+       if (k->vfork_done != NULL)
+               return kthread;
+       return NULL;
+}
+
+void kthread_stop_nowait(struct task_struct *k)
+{
+       struct kthread *kthread = task_get_live_kthread(k);
+
+       if (kthread) {
+               set_bit(KTHREAD_SHOULD_STOP, &kthread->flags);
+               clear_bit(KTHREAD_SHOULD_PARK, &kthread->flags);
+               wake_up_process(k);
+               wait_for_completion(&kthread->exited);
+       }
+
+       put_task_struct(k);
+}
+EXPORT_SYMBOL_GPL(kthread_stop_nowait);
+
+void brick_thread_stop_nowait(struct task_struct *k)
+{
+       kthread_stop_nowait(k);
+}
+EXPORT_SYMBOL_GPL(brick_thread_stop_nowait);
+
+/************************************************************/
+
+/*  number management */
+
+static char *nr_table;
+int nr_max = 256;
+EXPORT_SYMBOL_GPL(nr_max);
+
+int get_brick_nr(void)
+{
+       char *new;
+       int nr;
+
+       if (unlikely(!nr_table))
+               nr_table = brick_zmem_alloc(nr_max);
+
+       for (;;) {
+               for (nr = 1; nr < nr_max; nr++) {
+                       if (!nr_table[nr]) {
+                               nr_table[nr] = 1;
+                               return nr;
+                       }
+               }
+               new = brick_zmem_alloc(nr_max << 1);
+               memcpy(new, nr_table, nr_max);
+               brick_mem_free(nr_table);
+               nr_table = new;
+               nr_max <<= 1;
+       }
+}
+EXPORT_SYMBOL_GPL(get_brick_nr);
+
+void put_brick_nr(int nr)
+{
+       if (likely(nr_table && nr > 0 && nr < nr_max))
+               nr_table[nr] = 0;
+}
+EXPORT_SYMBOL_GPL(put_brick_nr);
+
+/************************************************************/
+
+/*  object stuff */
+
+/************************************************************/
+
+/*  brick stuff */
+
+static int nr_brick_types;
+static const struct generic_brick_type *brick_types[MAX_BRICK_TYPES];
+
+int generic_register_brick_type(const struct generic_brick_type *new_type)
+{
+       int i;
+       int found = -1;
+
+       BRICK_DBG("generic_register_brick_type() name=%s\n", 
new_type->type_name);
+       for (i = 0; i < nr_brick_types; i++) {
+               if (!brick_types[i]) {
+                       found = i;
+                       continue;
+               }
+               if (!strcmp(brick_types[i]->type_name, new_type->type_name))
+                       return 0;
+       }
+       if (found < 0) {
+               if (nr_brick_types >= MAX_BRICK_TYPES) {
+                       BRICK_ERR("sorry, cannot register bricktype %s.\n", 
new_type->type_name);
+                       return -ENOMEM;
+               }
+               found = nr_brick_types++;
+       }
+       brick_types[found] = new_type;
+       BRICK_DBG("generic_register_brick_type() done.\n");
+       return 0;
+}
+EXPORT_SYMBOL_GPL(generic_register_brick_type);
+
+int generic_unregister_brick_type(const struct generic_brick_type *old_type)
+{
+       BRICK_DBG("generic_unregister_brick_type()\n");
+       return -1; /*  NYI */
+}
+EXPORT_SYMBOL_GPL(generic_unregister_brick_type);
+
+int generic_brick_init_full(
+       void *data,
+       int size,
+       const struct generic_brick_type *brick_type,
+       const struct generic_input_type **input_types,
+       const struct generic_output_type **output_types)
+{
+       struct generic_brick *brick = data;
+       int status;
+       int i;
+
+       if (unlikely(!data)) {
+               BRICK_ERR("invalid memory\n");
+               return -EINVAL;
+       }
+
+       /*  call the generic constructors */
+
+       status = generic_brick_init(brick_type, brick);
+       if (status)
+               return status;
+       data += brick_type->brick_size;
+       size -= brick_type->brick_size;
+       if (size < 0) {
+               BRICK_ERR("Not enough MEMORY\n");
+               return -ENOMEM;
+       }
+       if (!input_types) {
+               input_types = brick_type->default_input_types;
+               if (unlikely(!input_types)) {
+                       BRICK_ERR("no input types specified\n");
+                       return -EINVAL;
+               }
+       }
+       brick->inputs = data;
+       data += sizeof(void *) * brick_type->max_inputs;
+       size -= sizeof(void *) * brick_type->max_inputs;
+       if (size < 0)
+               return -ENOMEM;
+       for (i = 0; i < brick_type->max_inputs; i++) {
+               struct generic_input *input = data;
+               const struct generic_input_type *type = *input_types++;
+
+               if (!type || type->input_size <= 0)
+                       return -EINVAL;
+               BRICK_DBG("generic_brick_init_full: calling 
generic_input_init()\n");
+               status = generic_input_init(brick, i, type, input);
+               if (status < 0)
+                       return status;
+               data += type->input_size;
+               size -= type->input_size;
+               if (size < 0)
+                       return -ENOMEM;
+       }
+       if (!output_types) {
+               output_types = brick_type->default_output_types;
+               if (unlikely(!output_types)) {
+                       BRICK_ERR("no output types specified\n");
+                       return -EINVAL;
+               }
+       }
+       brick->outputs = data;
+       data += sizeof(void *) * brick_type->max_outputs;
+       size -= sizeof(void *) * brick_type->max_outputs;
+       if (size < 0)
+               return -ENOMEM;
+       for (i = 0; i < brick_type->max_outputs; i++) {
+               struct generic_output *output = data;
+               const struct generic_output_type *type = *output_types++;
+
+               if (!type || type->output_size <= 0)
+                       return -EINVAL;
+               BRICK_DBG("generic_brick_init_full: calling 
generic_output_init()\n");
+               generic_output_init(brick, i, type, output);
+               if (status < 0)
+                       return status;
+               data += type->output_size;
+               size -= type->output_size;
+               if (size < 0)
+                       return -ENOMEM;
+       }
+
+       /*  call the specific constructors */
+       if (brick_type->brick_construct) {
+               BRICK_DBG("generic_brick_init_full: calling 
brick_construct()\n");
+               status = brick_type->brick_construct(brick);
+               if (status < 0)
+                       return status;
+       }
+       for (i = 0; i < brick_type->max_inputs; i++) {
+               struct generic_input *input = brick->inputs[i];
+
+               if (!input)
+                       continue;
+               if (!input->type) {
+                       BRICK_ERR("input has no associated type!\n");
+                       continue;
+               }
+               if (input->type->input_construct) {
+                       BRICK_DBG("generic_brick_init_full: calling 
input_construct()\n");
+                       status = input->type->input_construct(input);
+                       if (status < 0)
+                               return status;
+               }
+       }
+       for (i = 0; i < brick_type->max_outputs; i++) {
+               struct generic_output *output = brick->outputs[i];
+
+               if (!output)
+                       continue;
+               if (!output->type) {
+                       BRICK_ERR("output has no associated type!\n");
+                       continue;
+               }
+               if (output->type->output_construct) {
+                       BRICK_DBG("generic_brick_init_full: calling 
output_construct()\n");
+                       status = output->type->output_construct(output);
+                       if (status < 0)
+                               return status;
+               }
+       }
+       return 0;
+}
+EXPORT_SYMBOL_GPL(generic_brick_init_full);
+
+int generic_brick_exit_full(struct generic_brick *brick)
+{
+       int i;
+       int status;
+
+       /*  first, check all outputs */
+       for (i = 0; i < brick->type->max_outputs; i++) {
+               struct generic_output *output = brick->outputs[i];
+
+               if (!output)
+                       continue;
+               if (!output->type) {
+                       BRICK_ERR("output has no associated type!\n");
+                       continue;
+               }
+               if (output->nr_connected) {
+                       BRICK_ERR("output is connected!\n");
+                       return -EPERM;
+               }
+       }
+       /*  ok, test succeeded. start destruction... */
+       for (i = 0; i < brick->type->max_outputs; i++) {
+               struct generic_output *output = brick->outputs[i];
+
+               if (!output)
+                       continue;
+               if (!output->type) {
+                       BRICK_ERR("output has no associated type!\n");
+                       continue;
+               }
+               if (output->type->output_destruct) {
+                       BRICK_DBG("generic_brick_exit_full: calling 
output_destruct()\n");
+                       status = output->type->output_destruct(output);
+                       if (status < 0)
+                               return status;
+                       _generic_output_exit(output);
+                       brick->outputs[i] = NULL; /*  others may remain 
leftover */
+               }
+       }
+       for (i = 0; i < brick->type->max_inputs; i++) {
+               struct generic_input *input = brick->inputs[i];
+
+               if (!input)
+                       continue;
+               if (!input->type) {
+                       BRICK_ERR("input has no associated type!\n");
+                       continue;
+               }
+               if (input->type->input_destruct) {
+                       status = generic_disconnect(input);
+                       if (status < 0)
+                               return status;
+                       BRICK_DBG("generic_brick_exit_full: calling 
input_destruct()\n");
+                       status = input->type->input_destruct(input);
+                       if (status < 0)
+                               return status;
+                       brick->inputs[i] = NULL; /*  others may remain leftover 
*/
+                       generic_input_exit(input);
+               }
+       }
+       if (brick->type->brick_destruct) {
+               BRICK_DBG("generic_brick_exit_full: calling 
brick_destruct()\n");
+               status = brick->type->brick_destruct(brick);
+               if (status < 0)
+                       return status;
+       }
+       generic_brick_exit(brick);
+       return 0;
+}
+EXPORT_SYMBOL_GPL(generic_brick_exit_full);
+
+/**********************************************************************/
+
+/*  default implementations */
+
+struct generic_object *generic_alloc(struct generic_object_layout 
*object_layout,
+       const struct generic_object_type *object_type)
+{
+       struct generic_object *object;
+       void *data;
+       int object_size;
+       int aspect_nr_max;
+       int total_size;
+       int hint_size;
+
+       CHECK_PTR_NULL(object_type, err);
+       CHECK_PTR(object_layout, err);
+
+       object_size = object_type->default_size;
+       aspect_nr_max = nr_max;
+       total_size = object_size + aspect_nr_max * sizeof(void *);
+       hint_size = object_layout->size_hint;
+       if (likely(total_size <= hint_size)) {
+               total_size = hint_size;
+       } else { /*  usually happens only at the first time */
+               object_layout->size_hint = total_size;
+       }
+
+       data = brick_zmem_alloc(total_size);
+
+       atomic_inc(&object_layout->alloc_count);
+       atomic_inc(&object_layout->total_alloc_count);
+
+       object = data;
+       object->object_type = object_type;
+       object->object_layout = object_layout;
+       object->aspects = data + object_size;
+       object->aspect_nr_max = aspect_nr_max;
+       object->free_offset = object_size + aspect_nr_max * sizeof(void *);
+       object->max_offset = total_size;
+
+       if (object_type->init_fn) {
+               int status = object_type->init_fn(object);
+
+               if (status < 0)
+                       goto err_free;
+       }
+
+       return object;
+
+err_free:
+       brick_mem_free(data);
+err:
+       return NULL;
+}
+EXPORT_SYMBOL_GPL(generic_alloc);
+
+void generic_free(struct generic_object *object)
+{
+       const struct generic_object_type *object_type;
+       struct generic_object_layout *object_layout;
+       int i;
+
+       CHECK_PTR(object, done);
+       object_type = object->object_type;
+       CHECK_PTR_NULL(object_type, done);
+       object_layout = object->object_layout;
+       CHECK_PTR(object_layout, done);
+       _CHECK_ATOMIC(&object->obj_count, !=, 0);
+
+       atomic_dec(&object_layout->alloc_count);
+       for (i = 0; i < object->aspect_nr_max; i++) {
+               const struct generic_aspect_type *aspect_type;
+               struct generic_aspect *aspect = object->aspects[i];
+
+               if (!aspect)
+                       continue;
+               object->aspects[i] = NULL;
+               aspect_type = aspect->aspect_type;
+               CHECK_PTR_NULL(aspect_type, done);
+               if (aspect_type->exit_fn)
+                       aspect_type->exit_fn(aspect);
+               if (aspect->shortcut)
+                       continue;
+               brick_mem_free(aspect);
+               atomic_dec(&object_layout->aspect_count);
+       }
+       if (object_type->exit_fn)
+               object_type->exit_fn(object);
+       brick_mem_free(object);
+done:;
+}
+EXPORT_SYMBOL_GPL(generic_free);
+
+static inline
+struct generic_aspect *_new_aspect(const struct generic_aspect_type 
*aspect_type, struct generic_object *obj)
+{
+       struct generic_aspect *res = NULL;
+       int size;
+       int rest;
+
+       size = aspect_type->aspect_size;
+       rest = obj->max_offset - obj->free_offset;
+       if (likely(size <= rest)) {
+               /* Optimisation: re-use single memory allocation for both
+                * the object and the new aspect.
+                */
+               res = ((void *)obj) + obj->free_offset;
+               obj->free_offset += size;
+               res->shortcut = true;
+       } else {
+               struct generic_object_layout *object_layout = 
obj->object_layout;
+
+               CHECK_PTR(object_layout, done);
+               /* Maintain the size hint.
+                * In future, only small aspects should be integrated into
+                * the same memory block, and the hint should not grow larger
+                * than PAGE_SIZE if it was smaller before.
+                */
+               if (size < PAGE_SIZE / 2) {
+                       int max;
+
+                       max = obj->free_offset + size;
+                       /* This is racy, but races won't do any harm because
+                        * it is just a hint, not essential.
+                        */
+                       if ((max < PAGE_SIZE || object_layout->size_hint > 
PAGE_SIZE) &&
+                           object_layout->size_hint < max)
+                               object_layout->size_hint = max;
+               }
+
+               res = brick_zmem_alloc(size);
+               atomic_inc(&object_layout->aspect_count);
+               atomic_inc(&object_layout->total_aspect_count);
+       }
+       res->object = obj;
+       res->aspect_type = aspect_type;
+
+       if (aspect_type->init_fn) {
+               int status = aspect_type->init_fn(res);
+
+               if (unlikely(status < 0)) {
+                       BRICK_ERR("aspect init %p %p %p status = %d\n", 
aspect_type, obj, res, status);
+                       goto done;
+               }
+       }
+
+done:
+       return res;
+}
+
+struct generic_aspect *generic_get_aspect(struct generic_brick *brick, struct 
generic_object *obj)
+{
+       struct generic_aspect *res = NULL;
+       int nr;
+
+       CHECK_PTR(brick, done);
+       CHECK_PTR(obj, done);
+
+       nr = brick->aspect_context.brick_index;
+       if (unlikely(nr <= 0 || nr >= obj->aspect_nr_max)) {
+               BRICK_ERR("bad nr = %d\n", nr);
+               goto done;
+       }
+
+       res = obj->aspects[nr];
+       if (!res) {
+               const struct generic_object_type *object_type = 
obj->object_type;
+               const struct generic_brick_type *brick_type = brick->type;
+               const struct generic_aspect_type *aspect_type;
+               int object_type_nr;
+
+               CHECK_PTR_NULL(object_type, done);
+               CHECK_PTR_NULL(brick_type, done);
+               object_type_nr = object_type->object_type_nr;
+               aspect_type = brick_type->aspect_types[object_type_nr];
+               CHECK_PTR_NULL(aspect_type, done);
+
+               res = _new_aspect(aspect_type, obj);
+
+               obj->aspects[nr] = res;
+       }
+       CHECK_PTR(res, done);
+       CHECK_PTR(res->object, done);
+       _CHECK(res->object == obj, done);
+
+done:
+       return res;
+}
+EXPORT_SYMBOL_GPL(generic_get_aspect);
+
+/***************************************************************/
+
+/*  helper stuff */
+
+void set_button(struct generic_switch *sw, bool val, bool force)
+{
+       bool oldval = sw->button;
+
+       sw->force_off |= force;
+       if (sw->force_off)
+               val = false;
+       if (val != oldval) {
+               sw->button = val;
+               wake_up_interruptible(&sw->event);
+       }
+}
+EXPORT_SYMBOL_GPL(set_button);
+
+void set_on_led(struct generic_switch *sw, bool val)
+{
+       bool oldval = sw->on_led;
+
+       if (val != oldval) {
+               sw->on_led = val;
+               wake_up_interruptible(&sw->event);
+       }
+}
+EXPORT_SYMBOL_GPL(set_on_led);
+
+void set_off_led(struct generic_switch *sw, bool val)
+{
+       bool oldval = sw->off_led;
+
+       if (val != oldval) {
+               sw->off_led = val;
+               wake_up_interruptible(&sw->event);
+       }
+}
+EXPORT_SYMBOL_GPL(set_off_led);
+
+void set_button_wait(struct generic_brick *brick, bool val, bool force, int 
timeout)
+{
+       set_button(&brick->power, val, force);
+       if (brick->ops)
+               (void)brick->ops->brick_switch(brick);
+       if (val)
+               wait_event_interruptible_timeout(brick->power.event, 
brick->power.on_led, timeout);
+       else
+               wait_event_interruptible_timeout(brick->power.event, 
brick->power.off_led, timeout);
+}
+EXPORT_SYMBOL_GPL(set_button_wait);
+
+/***************************************************************/
+
+/*  meta stuff */
+
+const struct meta *find_meta(const struct meta *meta, const char *field_name)
+{
+       const struct meta *tmp;
+
+       for (tmp = meta; tmp->field_name; tmp++) {
+               if (!strcmp(field_name, tmp->field_name))
+                       return tmp;
+       }
+       return NULL;
+}
+EXPORT_SYMBOL_GPL(find_meta);
+
+/***********************************************************************/
+
+/*  module init stuff */
+
+int __init init_brick(void)
+{
+       nr_table = brick_zmem_alloc(nr_max);
+       return 0;
+}
+
+void exit_brick(void)
+{
+       if (nr_table) {
+               brick_mem_free(nr_table);
+               nr_table = NULL;
+       }
+}
-- 
2.0.0

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