Reorganized some code in the rmgr module to increase
its readability. No functional changes were done.
Signed-off-by: Ionut Nicu <ionut.n...@mindbit.ro>
---
drivers/staging/tidspbridge/rmgr/drv.c | 171 +++++++++-----------
drivers/staging/tidspbridge/rmgr/node.c | 82 +++++-----
drivers/staging/tidspbridge/rmgr/rmm.c | 267 +++++++++++++------------------
3 files changed, 229 insertions(+), 291 deletions(-)
diff --git a/drivers/staging/tidspbridge/rmgr/drv.c
b/drivers/staging/tidspbridge/rmgr/drv.c
index 18fae55..4eff419 100644
--- a/drivers/staging/tidspbridge/rmgr/drv.c
+++ b/drivers/staging/tidspbridge/rmgr/drv.c
@@ -293,40 +293,28 @@ int drv_proc_update_strm_res(u32 num_bufs, void
*strm_resources)
*/
int drv_create(struct drv_object **drv_obj)
{
- int status = 0;
struct drv_object *pdrv_object = NULL;
struct drv_data *drv_datap = dev_get_drvdata(bridge);
DBC_REQUIRE(drv_obj != NULL);
DBC_REQUIRE(refs > 0);
+ if (!drv_datap)
+ return -EFAULT;
+
pdrv_object = kzalloc(sizeof(struct drv_object), GFP_KERNEL);
- if (pdrv_object) {
- /* Create and Initialize List of device objects */
- INIT_LIST_HEAD(&pdrv_object->dev_list);
- INIT_LIST_HEAD(&pdrv_object->dev_node_string);
- } else {
- status = -ENOMEM;
- }
- /* Store the DRV Object in the driver data */
- if (!status) {
- if (drv_datap) {
- drv_datap->drv_object = (void *)pdrv_object;
- } else {
- status = -EPERM;
- pr_err("%s: Failed to store DRV object\n", __func__);
- }
- }
+ if (!pdrv_object)
+ return -ENOMEM;
- if (!status) {
- *drv_obj = pdrv_object;
- } else {
- /* Free the DRV Object */
- kfree(pdrv_object);
- }
+ /* Create and Initialize List of device objects */
+ INIT_LIST_HEAD(&pdrv_object->dev_list);
+ INIT_LIST_HEAD(&pdrv_object->dev_node_string);
- DBC_ENSURE(status || pdrv_object);
- return status;
+ /* Store the DRV Object in the driver data */
+ drv_datap->drv_object = (void *)pdrv_object;
+ *drv_obj = pdrv_object;
+
+ return 0;
}
/*
@@ -413,19 +401,19 @@ int drv_get_dev_object(u32 index, struct drv_object
*hdrv_obj,
*/
u32 drv_get_first_dev_object(void)
{
- u32 dw_dev_object = 0;
struct drv_object *pdrv_obj;
struct drv_data *drv_datap = dev_get_drvdata(bridge);
- if (drv_datap && drv_datap->drv_object) {
- pdrv_obj = drv_datap->drv_object;
- if (!list_empty(&pdrv_obj->dev_list))
- dw_dev_object = (u32) pdrv_obj->dev_list.next;
- } else {
+ if (!drv_datap || !drv_datap->drv_object) {
pr_err("%s: Failed to retrieve the object handle\n", __func__);
+ return 0;
}
- return dw_dev_object;
+ pdrv_obj = drv_datap->drv_object;
+ if (list_empty(&pdrv_obj->dev_list))
+ return 0;
+
+ return (u32) pdrv_obj->dev_list.next;
}
/*
@@ -436,21 +424,19 @@ u32 drv_get_first_dev_object(void)
*/
u32 drv_get_first_dev_extension(void)
{
- u32 dw_dev_extension = 0;
struct drv_object *pdrv_obj;
struct drv_data *drv_datap = dev_get_drvdata(bridge);
- if (drv_datap && drv_datap->drv_object) {
- pdrv_obj = drv_datap->drv_object;
- if (!list_empty(&pdrv_obj->dev_node_string)) {
- dw_dev_extension =
- (u32) pdrv_obj->dev_node_string.next;
- }
- } else {
+ if (!drv_datap || !drv_datap->drv_object) {
pr_err("%s: Failed to retrieve the object handle\n", __func__);
+ return 0;
}
- return dw_dev_extension;
+ pdrv_obj = drv_datap->drv_object;
+ if (list_empty(&pdrv_obj->dev_node_string))
+ return 0;
+
+ return (u32) pdrv_obj->dev_node_string.next;
}
/*
@@ -462,26 +448,27 @@ u32 drv_get_first_dev_extension(void)
*/
u32 drv_get_next_dev_object(u32 hdev_obj)
{
- u32 dw_next_dev_object = 0;
struct drv_object *pdrv_obj;
struct drv_data *drv_datap = dev_get_drvdata(bridge);
struct list_head *curr;
DBC_REQUIRE(hdev_obj != 0);
- if (drv_datap && drv_datap->drv_object) {
- pdrv_obj = drv_datap->drv_object;
- if (!list_empty(&pdrv_obj->dev_list)) {
- curr = (struct list_head *)hdev_obj;
- if (curr->next == &pdrv_obj->dev_list)
- return 0;
- dw_next_dev_object = (u32) curr->next;
- }
- } else {
+ if (!drv_datap || !drv_datap->drv_object) {
pr_err("%s: Failed to retrieve the object handle\n", __func__);
+ return 0;
}
- return dw_next_dev_object;
+ pdrv_obj = drv_datap->drv_object;
+ if (list_empty(&pdrv_obj->dev_list))
+ return 0;
+
+ curr = (struct list_head *)hdev_obj;
+
+ if (curr->next == &pdrv_obj->dev_list)
+ return 0;
+
+ return (u32)curr->next;
}
/*
@@ -494,26 +481,27 @@ u32 drv_get_next_dev_object(u32 hdev_obj)
*/
u32 drv_get_next_dev_extension(u32 dev_extension)
{
- u32 dw_dev_extension = 0;
struct drv_object *pdrv_obj;
struct drv_data *drv_datap = dev_get_drvdata(bridge);
struct list_head *curr;
DBC_REQUIRE(dev_extension != 0);
- if (drv_datap && drv_datap->drv_object) {
- pdrv_obj = drv_datap->drv_object;
- if (!list_empty(&pdrv_obj->dev_node_string)) {
- curr = (struct list_head *)dev_extension;
- if (curr->next == &pdrv_obj->dev_node_string)
- return 0;
- dw_dev_extension = (u32) curr->next;
- }
- } else {
+ if (!drv_datap || !drv_datap->drv_object) {
pr_err("%s: Failed to retrieve the object handle\n", __func__);
+ return 0;
}
- return dw_dev_extension;
+ pdrv_obj = drv_datap->drv_object;
+ if (list_empty(&pdrv_obj->dev_node_string))
+ return 0;
+
+ curr = (struct list_head *)dev_extension;
+
+ if (curr->next == &pdrv_obj->dev_node_string)
+ return 0;
+
+ return (u32) curr->next;
}
/*
@@ -601,40 +589,28 @@ int drv_request_resources(u32 dw_context, u32
*dev_node_strg)
DBC_REQUIRE(dw_context != 0);
DBC_REQUIRE(dev_node_strg != NULL);
- /*
- * Allocate memory to hold the string. This will live untill
- * it is freed in the Release resources. Update the driver object
- * list.
- */
-
if (!drv_datap || !drv_datap->drv_object)
- status = -ENODATA;
- else
- pdrv_object = drv_datap->drv_object;
-
- if (!status) {
- pszdev_node = kzalloc(sizeof(struct drv_ext), GFP_KERNEL);
- if (pszdev_node) {
- strncpy(pszdev_node->sz_string,
- (char *)dw_context, MAXREGPATHLENGTH - 1);
- pszdev_node->sz_string[MAXREGPATHLENGTH - 1] = '\0';
- /* Update the Driver Object List */
- *dev_node_strg = (u32) pszdev_node->sz_string;
- list_add_tail(&pszdev_node->link,
- &pdrv_object->dev_node_string);
- } else {
- status = -ENOMEM;
- *dev_node_strg = 0;
- }
- } else {
- dev_dbg(bridge, "%s: Failed to get Driver Object from Registry",
- __func__);
- *dev_node_strg = 0;
- }
+ return -ENODATA;
+
+ pdrv_object = drv_datap->drv_object;
+ *dev_node_strg = 0;
+
+ pszdev_node = kzalloc(sizeof(struct drv_ext), GFP_KERNEL);
+ if (!pszdev_node)
+ return -ENOMEM;
+
+ strncpy(pszdev_node->sz_string, (char *)dw_context,
+ MAXREGPATHLENGTH - 1);
+ pszdev_node->sz_string[MAXREGPATHLENGTH - 1] = '\0';
+ *dev_node_strg = (u32) pszdev_node->sz_string;
+
+ /* Update the Driver Object List */
+ list_add_tail((struct list_head *)pszdev_node,
+ &pdrv_object->dev_node_string);
DBC_ENSURE((!status && dev_node_strg != NULL &&
- !list_empty(&pdrv_object->dev_node_string)) ||
- (status && *dev_node_strg == 0));
+ !list_empty(&pdrv_object->dev_node_string)) ||
+ (status && *dev_node_strg == 0));
return status;
}
@@ -646,7 +622,6 @@ int drv_request_resources(u32 dw_context, u32
*dev_node_strg)
*/
int drv_release_resources(u32 dw_context, struct drv_object *hdrv_obj)
{
- int status = 0;
struct drv_ext *pszdev_node;
/*
@@ -659,12 +634,12 @@ int drv_release_resources(u32 dw_context, struct
drv_object *hdrv_obj)
if ((u32) pszdev_node == dw_context) {
/* Found it */
/* Delete from the Driver object list */
- list_del(&pszdev_node->link);
- kfree(pszdev_node);
+ list_del((struct list_head *)pszdev_node);
+ kfree((void *)pszdev_node);
break;
}
}
- return status;
+ return 0;
}
/*
diff --git a/drivers/staging/tidspbridge/rmgr/node.c
b/drivers/staging/tidspbridge/rmgr/node.c
index 34ae0ad..23775fd 100644
--- a/drivers/staging/tidspbridge/rmgr/node.c
+++ b/drivers/staging/tidspbridge/rmgr/node.c
@@ -1554,27 +1554,26 @@ int node_enum_nodes(struct node_mgr *hnode_mgr, void
**node_tab,
DBC_REQUIRE(pu_num_nodes != NULL);
DBC_REQUIRE(pu_allocated != NULL);
- if (!hnode_mgr) {
- status = -EFAULT;
- goto func_end;
- }
- /* Enter critical section */
+ if (!hnode_mgr)
+ return -EFAULT;
+
mutex_lock(&hnode_mgr->node_mgr_lock);
if (hnode_mgr->num_nodes > node_tab_size) {
*pu_allocated = hnode_mgr->num_nodes;
*pu_num_nodes = 0;
status = -EINVAL;
- } else {
- i = 0;
- list_for_each_entry(hnode, &hnode_mgr->node_list, list_elem)
- node_tab[i++] = hnode;
- *pu_allocated = *pu_num_nodes = hnode_mgr->num_nodes;
+ goto out_unlock;
}
- /* end of sync_enter_cs */
- /* Exit critical section */
+
+ i = 0;
+ list_for_each_entry(hnode, &hnode_mgr->node_list, list_elem) {
+ DBC_ASSERT(hnode);
+ node_tab[i++] = hnode;
+ }
+ *pu_allocated = *pu_num_nodes = hnode_mgr->num_nodes;
+out_unlock:
mutex_unlock(&hnode_mgr->node_mgr_lock);
-func_end:
return status;
}
@@ -1657,8 +1656,7 @@ int node_get_attr(struct node_object *hnode,
mutex_lock(&hnode_mgr->node_mgr_lock);
pattr->cb_struct = sizeof(struct dsp_nodeattr);
/* dsp_nodeattrin */
- pattr->in_node_attr_in.cb_struct =
- sizeof(struct dsp_nodeattrin);
+ pattr->in_node_attr_in.cb_struct = sizeof(struct dsp_nodeattrin);
pattr->in_node_attr_in.prio = hnode->prio;
pattr->in_node_attr_in.utimeout = hnode->utimeout;
pattr->in_node_attr_in.heap_size =
@@ -2540,38 +2538,40 @@ static void delete_node_mgr(struct node_mgr *hnode_mgr)
{
struct node_object *hnode, *tmp;
- if (hnode_mgr) {
- /* Free resources */
- if (hnode_mgr->hdcd_mgr)
- dcd_destroy_manager(hnode_mgr->hdcd_mgr);
+ if (!hnode_mgr)
+ return;
- /* Remove any elements remaining in lists */
- list_for_each_entry_safe(hnode, tmp, &hnode_mgr->node_list,
- list_elem) {
- list_del(&hnode->list_elem);
- delete_node(hnode, NULL);
- }
- mutex_destroy(&hnode_mgr->node_mgr_lock);
- if (hnode_mgr->ntfy_obj) {
- ntfy_delete(hnode_mgr->ntfy_obj);
- kfree(hnode_mgr->ntfy_obj);
- }
+ /* Free resources */
+ if (hnode_mgr->hdcd_mgr)
+ dcd_destroy_manager(hnode_mgr->hdcd_mgr);
- if (hnode_mgr->disp_obj)
- disp_delete(hnode_mgr->disp_obj);
+ /* Remove any elements remaining in lists */
+ list_for_each_entry_safe(hnode, tmp, &hnode_mgr->node_list, list_elem) {
+ list_del(&hnode->list_elem);
+ delete_node(hnode, NULL);
+ }
- if (hnode_mgr->strm_mgr_obj)
- strm_delete(hnode_mgr->strm_mgr_obj);
+ mutex_destroy(&hnode_mgr->node_mgr_lock);
- /* Delete the loader */
- if (hnode_mgr->nldr_obj)
- hnode_mgr->nldr_fxns.pfn_delete(hnode_mgr->nldr_obj);
+ if (hnode_mgr->ntfy_obj) {
+ ntfy_delete(hnode_mgr->ntfy_obj);
+ kfree(hnode_mgr->ntfy_obj);
+ }
- if (hnode_mgr->loader_init)
- hnode_mgr->nldr_fxns.pfn_exit();
+ if (hnode_mgr->disp_obj)
+ disp_delete(hnode_mgr->disp_obj);
- kfree(hnode_mgr);
- }
+ if (hnode_mgr->strm_mgr_obj)
+ strm_delete(hnode_mgr->strm_mgr_obj);
+
+ /* Delete the loader */
+ if (hnode_mgr->nldr_obj)
+ hnode_mgr->nldr_fxns.pfn_delete(hnode_mgr->nldr_obj);
+
+ if (hnode_mgr->loader_init)
+ hnode_mgr->nldr_fxns.pfn_exit();
+
+ kfree(hnode_mgr);
}
/*
diff --git a/drivers/staging/tidspbridge/rmgr/rmm.c
b/drivers/staging/tidspbridge/rmgr/rmm.c
index 93db337..9d673f5 100644
--- a/drivers/staging/tidspbridge/rmgr/rmm.c
+++ b/drivers/staging/tidspbridge/rmgr/rmm.c
@@ -96,10 +96,9 @@ static bool free_block(struct rmm_target_obj *target, u32
segid, u32 addr,
int rmm_alloc(struct rmm_target_obj *target, u32 segid, u32 size,
u32 align, u32 *dsp_address, bool reserve)
{
- struct rmm_ovly_sect *sect, *prev_sect = NULL;
+ struct rmm_ovly_sect *sect, *prev = NULL;
struct rmm_ovly_sect *new_sect;
u32 addr;
- int status = 0;
DBC_REQUIRE(target);
DBC_REQUIRE(dsp_address != NULL);
@@ -108,54 +107,38 @@ int rmm_alloc(struct rmm_target_obj *target, u32 segid,
u32 size,
DBC_REQUIRE(refs > 0);
if (!reserve) {
- if (!alloc_block(target, segid, size, align, dsp_address)) {
- status = -ENOMEM;
- } else {
- /* Increment the number of allocated blocks in this
- * segment */
- target->seg_tab[segid].number++;
- }
- goto func_end;
+ if (!alloc_block(target, segid, size, align, dsp_address))
+ return -ENOMEM;
+ /* Increment the number of allocated blocks in this segment */
+ target->seg_tab[segid].number++;
+ return 0;
}
+
+ new_sect = kzalloc(sizeof(struct rmm_ovly_sect), GFP_KERNEL);
+ if (!new_sect)
+ return -ENOMEM;
+
+ addr = *dsp_address;
+ new_sect->addr = addr;
+ new_sect->size = size;
+ new_sect->page = segid;
+
/* An overlay section - See if block is already in use. If not,
* insert into the list in ascending address size. */
- addr = *dsp_address;
- /* Find place to insert new list element. List is sorted from
- * smallest to largest address. */
list_for_each_entry(sect, &target->ovly_list, list_elem) {
if (addr <= sect->addr) {
- /* Check for overlap with sect */
- if ((addr + size > sect->addr) || (prev_sect &&
- (prev_sect->addr +
- prev_sect->size >
- addr))) {
- status = -ENXIO;
+ if (prev && (prev->addr + prev->size > addr)) {
+ kfree(new_sect);
+ return -ENXIO;
}
- break;
- }
- prev_sect = sect;
- }
- if (!status) {
- /* No overlap - allocate list element for new section. */
- new_sect = kzalloc(sizeof(struct rmm_ovly_sect), GFP_KERNEL);
- if (new_sect == NULL) {
- status = -ENOMEM;
- } else {
- new_sect->addr = addr;
- new_sect->size = size;
- new_sect->page = segid;
- if (sect == NULL)
- /* Put new section at the end of the list */
- list_add_tail(&new_sect->list_elem,
- &target->ovly_list);
- else
- /* Put new section just before sect */
- list_add_tail(&new_sect->list_elem,
- §->list_elem);
+ list_add_tail(&new_sect->list_elem, §->list_elem);
+ return 0;
}
+ prev = sect;
}
-func_end:
- return status;
+ list_add_tail(&new_sect->list_elem, &target->ovly_list);
+
+ return 0;
}
/*
@@ -173,71 +156,57 @@ int rmm_create(struct rmm_target_obj **target_obj,
DBC_REQUIRE(target_obj != NULL);
DBC_REQUIRE(num_segs == 0 || seg_tab != NULL);
+ if (num_segs <= 0)
+ return -EINVAL;
+
/* Allocate DBL target object */
target = kzalloc(sizeof(struct rmm_target_obj), GFP_KERNEL);
-
- if (target == NULL)
- status = -ENOMEM;
-
- if (status)
- goto func_cont;
+ if (!target)
+ return -ENOMEM;
target->num_segs = num_segs;
- if (!(num_segs > 0))
- goto func_cont;
-
+ INIT_LIST_HEAD(&target->ovly_list);
/* Allocate the memory for freelist from host's memory */
- target->free_list = kzalloc(num_segs * sizeof(struct rmm_header *),
- GFP_KERNEL);
- if (target->free_list == NULL) {
+ target->free_list = kzalloc(num_segs *
+ sizeof(struct rmm_header *), GFP_KERNEL);
+ if (!target->free_list) {
status = -ENOMEM;
- } else {
- /* Allocate headers for each element on the free list */
- for (i = 0; i < (s32) num_segs; i++) {
- target->free_list[i] =
- kzalloc(sizeof(struct rmm_header), GFP_KERNEL);
- if (target->free_list[i] == NULL) {
- status = -ENOMEM;
- break;
- }
- }
- /* Allocate memory for initial segment table */
- target->seg_tab = kzalloc(num_segs * sizeof(struct rmm_segment),
- GFP_KERNEL);
- if (target->seg_tab == NULL) {
+ goto out_err;
+ }
+ /* Allocate headers for each element on the free list */
+ for (i = 0; i < num_segs; i++) {
+ target->free_list[i] =
+ kzalloc(sizeof(struct rmm_header), GFP_KERNEL);
+ if (!target->free_list[i]) {
status = -ENOMEM;
- } else {
- /* Initialize segment table and free list */
- sptr = target->seg_tab;
- for (i = 0, tmp = seg_tab; num_segs > 0;
- num_segs--, i++) {
- *sptr = *tmp;
- hptr = target->free_list[i];
- hptr->addr = tmp->base;
- hptr->size = tmp->length;
- hptr->next = NULL;
- tmp++;
- sptr++;
- }
+ goto out_err;
}
}
-func_cont:
- /* Initialize overlay memory list */
- if (!status)
- INIT_LIST_HEAD(&target->ovly_list);
-
- if (!status) {
- *target_obj = target;
- } else {
- *target_obj = NULL;
- if (target)
- rmm_delete(target);
-
+ /* Allocate memory for initial segment table */
+ target->seg_tab = kzalloc(num_segs * sizeof(struct rmm_segment),
+ GFP_KERNEL);
+ if (!target->seg_tab) {
+ status = -ENOMEM;
+ goto out_err;
+ }
+ /* Initialize segment table and free list */
+ sptr = target->seg_tab;
+ for (i = 0, tmp = seg_tab; num_segs > 0; num_segs--, i++) {
+ *sptr = *tmp;
+ hptr = target->free_list[i];
+ hptr->addr = tmp->base;
+ hptr->size = tmp->length;
+ hptr->next = NULL;
+ tmp++;
+ sptr++;
}
- DBC_ENSURE((!status && *target_obj)
- || (status && *target_obj == NULL));
+ *target_obj = target;
+ return 0;
+out_err:
+ *target_obj = NULL;
+ rmm_delete(target);
return status;
}
@@ -298,14 +267,12 @@ bool rmm_free(struct rmm_target_obj *target, u32 segid,
u32 dsp_addr, u32 size,
bool ret = false;
DBC_REQUIRE(target);
-
DBC_REQUIRE(reserved || segid < target->num_segs);
DBC_REQUIRE(reserved || (dsp_addr >= target->seg_tab[segid].base &&
- (dsp_addr + size) <= (target->seg_tab[segid].
- base +
- target->seg_tab[segid].
- length)));
-
+ (dsp_addr + size) <= (target->seg_tab[segid].
+ base +
+ target->seg_tab[segid].
+ length)));
/*
* Free or unreserve memory.
*/
@@ -313,21 +280,20 @@ bool rmm_free(struct rmm_target_obj *target, u32 segid,
u32 dsp_addr, u32 size,
ret = free_block(target, segid, dsp_addr, size);
if (ret)
target->seg_tab[segid].number--;
+ return ret;
+ }
- } else {
- /* Unreserve memory */
- list_for_each_entry_safe(sect, tmp, &target->ovly_list,
- list_elem) {
- if (dsp_addr == sect->addr) {
- DBC_ASSERT(size == sect->size);
- /* Remove from list */
- list_del(§->list_elem);
- kfree(sect);
- ret = true;
- break;
- }
+ /* Unreserve memory */
+ list_for_each_entry_safe(sect, tmp, &target->ovly_list, list_elem) {
+ if (sect->addr == dsp_addr) {
+ DBC_ASSERT(size == sect->size);
+ /* Remove from list */
+ list_del(§->list_elem);
+ kfree(sect);
+ break;
}
}
+
return ret;
}
@@ -463,51 +429,48 @@ static bool free_block(struct rmm_target_obj *target, u32
segid, u32 addr,
struct rmm_header *head;
struct rmm_header *thead;
struct rmm_header *rhead;
- bool ret = true;
/* Create a memory header to hold the newly free'd block. */
rhead = kzalloc(sizeof(struct rmm_header), GFP_KERNEL);
- if (rhead == NULL) {
- ret = false;
- } else {
- /* search down the free list to find the right place for addr */
- head = target->free_list[segid];
+ if (!rhead)
+ return false;
- if (addr >= head->addr) {
- while (head->next != NULL && addr > head->next->addr)
- head = head->next;
-
- thead = head->next;
-
- head->next = rhead;
- rhead->next = thead;
- rhead->addr = addr;
- rhead->size = size;
- } else {
- *rhead = *head;
- head->next = rhead;
- head->addr = addr;
- head->size = size;
- thead = rhead->next;
- }
+ /* search down the free list to find the right place for addr */
+ head = target->free_list[segid];
- /* join with upper block, if possible */
- if (thead != NULL && (rhead->addr + rhead->size) ==
- thead->addr) {
- head->next = rhead->next;
- thead->size = size + thead->size;
- thead->addr = addr;
- kfree(rhead);
- rhead = thead;
- }
+ if (addr >= head->addr) {
+ while (head->next != NULL && addr > head->next->addr)
+ head = head->next;
- /* join with the lower block, if possible */
- if ((head->addr + head->size) == rhead->addr) {
- head->next = rhead->next;
- head->size = head->size + rhead->size;
- kfree(rhead);
- }
+ thead = head->next;
+ head->next = rhead;
+ rhead->next = thead;
+ rhead->addr = addr;
+ rhead->size = size;
+ } else {
+ *rhead = *head;
+ head->next = rhead;
+ head->addr = addr;
+ head->size = size;
+ thead = rhead->next;
}
- return ret;
+ /* join with upper block, if possible */
+ if (thead != NULL && (rhead->addr + rhead->size) ==
+ thead->addr) {
+ head->next = rhead->next;
+ thead->size = size + thead->size;
+ thead->addr = addr;
+ kfree(rhead);
+ rhead = thead;
+ }
+
+ /* join with the lower block, if possible */
+ if ((head->addr + head->size) == rhead->addr) {
+ head->next = rhead->next;
+ head->size = head->size + rhead->size;
+ kfree(rhead);
+ }
+
+ return true;
}
--
1.7.2.3
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