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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-07 01:03:42 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-07 02:42:15 (GMT) |
commit | 0324e74534241f3f00910ec04ef67de1fe1542f4 (patch) | |
tree | 88f0b2a40a47dc0a22c0ce5e9b75a58470a56204 /drivers/base/devres.c | |
parent | 1071ec7bc2dabd0a9d12a1ae5570f4fd3ba944ca (diff) | |
parent | 0cae60f91494e34a0c5391f1455f825d5849b05f (diff) | |
download | linux-fsl-qoriq-0324e74534241f3f00910ec04ef67de1fe1542f4.tar.xz |
Merge tag 'driver-core-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core / sysfs patches from Greg KH:
"Here's the big driver core / sysfs update for 3.13-rc1.
There's lots of dev_groups updates for different subsystems, as they
all get slowly migrated over to the safe versions of the attribute
groups (removing userspace races with the creation of the sysfs
files.) Also in here are some kobject updates, devres expansions, and
the first round of Tejun's sysfs reworking to enable it to be used by
other subsystems as a backend for an in-kernel filesystem.
All of these have been in linux-next for a while with no reported
issues"
* tag 'driver-core-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (83 commits)
sysfs: rename sysfs_assoc_lock and explain what it's about
sysfs: use generic_file_llseek() for sysfs_file_operations
sysfs: return correct error code on unimplemented mmap()
mdio_bus: convert bus code to use dev_groups
device: Make dev_WARN/dev_WARN_ONCE print device as well as driver name
sysfs: separate out dup filename warning into a separate function
sysfs: move sysfs_hash_and_remove() to fs/sysfs/dir.c
sysfs: remove unused sysfs_get_dentry() prototype
sysfs: honor bin_attr.attr.ignore_lockdep
sysfs: merge sysfs_elem_bin_attr into sysfs_elem_attr
devres: restore zeroing behavior of devres_alloc()
sysfs: fix sysfs_write_file for bin file
input: gameport: convert bus code to use dev_groups
input: serio: remove bus usage of dev_attrs
input: serio: use DEVICE_ATTR_RO()
i2o: convert bus code to use dev_groups
memstick: convert bus code to use dev_groups
tifm: convert bus code to use dev_groups
virtio: convert bus code to use dev_groups
ipack: convert bus code to use dev_groups
...
Diffstat (limited to 'drivers/base/devres.c')
-rw-r--r-- | drivers/base/devres.c | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/drivers/base/devres.c b/drivers/base/devres.c index 507379e..545c4de 100644 --- a/drivers/base/devres.c +++ b/drivers/base/devres.c @@ -91,7 +91,8 @@ static __always_inline struct devres * alloc_dr(dr_release_t release, if (unlikely(!dr)) return NULL; - memset(dr, 0, tot_size); + memset(dr, 0, offsetof(struct devres, data)); + INIT_LIST_HEAD(&dr->node.entry); dr->node.release = release; return dr; @@ -110,7 +111,7 @@ void * __devres_alloc(dr_release_t release, size_t size, gfp_t gfp, { struct devres *dr; - dr = alloc_dr(release, size, gfp); + dr = alloc_dr(release, size, gfp | __GFP_ZERO); if (unlikely(!dr)) return NULL; set_node_dbginfo(&dr->node, name, size); @@ -135,7 +136,7 @@ void * devres_alloc(dr_release_t release, size_t size, gfp_t gfp) { struct devres *dr; - dr = alloc_dr(release, size, gfp); + dr = alloc_dr(release, size, gfp | __GFP_ZERO); if (unlikely(!dr)) return NULL; return dr->data; @@ -745,58 +746,62 @@ void devm_remove_action(struct device *dev, void (*action)(void *), void *data) EXPORT_SYMBOL_GPL(devm_remove_action); /* - * Managed kzalloc/kfree + * Managed kmalloc/kfree */ -static void devm_kzalloc_release(struct device *dev, void *res) +static void devm_kmalloc_release(struct device *dev, void *res) { /* noop */ } -static int devm_kzalloc_match(struct device *dev, void *res, void *data) +static int devm_kmalloc_match(struct device *dev, void *res, void *data) { return res == data; } /** - * devm_kzalloc - Resource-managed kzalloc + * devm_kmalloc - Resource-managed kmalloc * @dev: Device to allocate memory for * @size: Allocation size * @gfp: Allocation gfp flags * - * Managed kzalloc. Memory allocated with this function is + * Managed kmalloc. Memory allocated with this function is * automatically freed on driver detach. Like all other devres * resources, guaranteed alignment is unsigned long long. * * RETURNS: * Pointer to allocated memory on success, NULL on failure. */ -void * devm_kzalloc(struct device *dev, size_t size, gfp_t gfp) +void * devm_kmalloc(struct device *dev, size_t size, gfp_t gfp) { struct devres *dr; /* use raw alloc_dr for kmalloc caller tracing */ - dr = alloc_dr(devm_kzalloc_release, size, gfp); + dr = alloc_dr(devm_kmalloc_release, size, gfp); if (unlikely(!dr)) return NULL; + /* + * This is named devm_kzalloc_release for historical reasons + * The initial implementation did not support kmalloc, only kzalloc + */ set_node_dbginfo(&dr->node, "devm_kzalloc_release", size); devres_add(dev, dr->data); return dr->data; } -EXPORT_SYMBOL_GPL(devm_kzalloc); +EXPORT_SYMBOL_GPL(devm_kmalloc); /** * devm_kfree - Resource-managed kfree * @dev: Device this memory belongs to * @p: Memory to free * - * Free memory allocated with devm_kzalloc(). + * Free memory allocated with devm_kmalloc(). */ void devm_kfree(struct device *dev, void *p) { int rc; - rc = devres_destroy(dev, devm_kzalloc_release, devm_kzalloc_match, p); + rc = devres_destroy(dev, devm_kmalloc_release, devm_kmalloc_match, p); WARN_ON(rc); } EXPORT_SYMBOL_GPL(devm_kfree); |