diff options
Diffstat (limited to 'drivers/base/devres.c')
| -rw-r--r-- | drivers/base/devres.c | 34 |
1 files changed, 21 insertions, 13 deletions
diff --git a/drivers/base/devres.c b/drivers/base/devres.c index 3df0025d12aa..a2ce0ead06a6 100644 --- a/drivers/base/devres.c +++ b/drivers/base/devres.c @@ -85,7 +85,7 @@ static void group_close_release(struct device *dev, void *res) /* noop */ } -static struct devres_group * node_to_group(struct devres_node *node) +static struct devres_group *node_to_group(struct devres_node *node) { if (node->release == &group_open_release) return container_of(node, struct devres_group, node[0]); @@ -107,8 +107,8 @@ static bool check_dr_size(size_t size, size_t *tot_size) return true; } -static __always_inline struct devres * alloc_dr(dr_release_t release, - size_t size, gfp_t gfp, int nid) +static __always_inline struct devres *alloc_dr(dr_release_t release, + size_t size, gfp_t gfp, int nid) { size_t tot_size; struct devres *dr; @@ -283,8 +283,8 @@ static struct devres *find_dr(struct device *dev, dr_release_t release, * RETURNS: * Pointer to found devres, NULL if not found. */ -void * devres_find(struct device *dev, dr_release_t release, - dr_match_t match, void *match_data) +void *devres_find(struct device *dev, dr_release_t release, + dr_match_t match, void *match_data) { struct devres *dr; unsigned long flags; @@ -313,8 +313,8 @@ EXPORT_SYMBOL_GPL(devres_find); * RETURNS: * Pointer to found or added devres. */ -void * devres_get(struct device *dev, void *new_res, - dr_match_t match, void *match_data) +void *devres_get(struct device *dev, void *new_res, + dr_match_t match, void *match_data) { struct devres *new_dr = container_of(new_res, struct devres, data); struct devres *dr; @@ -349,8 +349,8 @@ EXPORT_SYMBOL_GPL(devres_get); * RETURNS: * Pointer to removed devres on success, NULL if not found. */ -void * devres_remove(struct device *dev, dr_release_t release, - dr_match_t match, void *match_data) +void *devres_remove(struct device *dev, dr_release_t release, + dr_match_t match, void *match_data) { struct devres *dr; unsigned long flags; @@ -549,7 +549,7 @@ int devres_release_all(struct device *dev) * RETURNS: * ID of the new group, NULL on failure. */ -void * devres_open_group(struct device *dev, void *id, gfp_t gfp) +void *devres_open_group(struct device *dev, void *id, gfp_t gfp) { struct devres_group *grp; unsigned long flags; @@ -567,6 +567,7 @@ void * devres_open_group(struct device *dev, void *id, gfp_t gfp) grp->id = grp; if (id) grp->id = id; + grp->color = 0; spin_lock_irqsave(&dev->devres_lock, flags); add_dr(dev, &grp->node[0]); @@ -576,7 +577,7 @@ void * devres_open_group(struct device *dev, void *id, gfp_t gfp) EXPORT_SYMBOL_GPL(devres_open_group); /* Find devres group with ID @id. If @id is NULL, look for the latest. */ -static struct devres_group * find_group(struct device *dev, void *id) +static struct devres_group *find_group(struct device *dev, void *id) { struct devres_node *node; @@ -896,9 +897,12 @@ void *devm_krealloc(struct device *dev, void *ptr, size_t new_size, gfp_t gfp) /* * Otherwise: allocate new, larger chunk. We need to allocate before * taking the lock as most probably the caller uses GFP_KERNEL. + * alloc_dr() will call check_dr_size() to reserve extra memory + * for struct devres automatically, so size @new_size user request + * is delivered to it directly as devm_kmalloc() does. */ new_dr = alloc_dr(devm_kmalloc_release, - total_new_size, gfp, dev_to_node(dev)); + new_size, gfp, dev_to_node(dev)); if (!new_dr) return NULL; @@ -1222,7 +1226,11 @@ EXPORT_SYMBOL_GPL(__devm_alloc_percpu); */ void devm_free_percpu(struct device *dev, void __percpu *pdata) { - WARN_ON(devres_destroy(dev, devm_percpu_release, devm_percpu_match, + /* + * Use devres_release() to prevent memory leakage as + * devm_free_pages() does. + */ + WARN_ON(devres_release(dev, devm_percpu_release, devm_percpu_match, (__force void *)pdata)); } EXPORT_SYMBOL_GPL(devm_free_percpu); |