From e467b6421435f467e274d4f25d62900e1e0e4286 Mon Sep 17 00:00:00 2001 From: Ohad Ben-Cohen Date: Mon, 5 Sep 2011 16:42:36 +0300 Subject: hwspinlock/core: simplify 'owner' handling Use struct device_driver's owner member instead of asking drivers to explicitly pass the owner again. This simplifies drivers and also save some memory, since there's no point now in maintaining a separate owner pointer per hwspinlock. Signed-off-by: Ohad Ben-Cohen --- drivers/hwspinlock/hwspinlock_core.c | 4 ++-- drivers/hwspinlock/hwspinlock_internal.h | 4 +--- drivers/hwspinlock/omap_hwspinlock.c | 2 +- 3 files changed, 4 insertions(+), 6 deletions(-) (limited to 'drivers/hwspinlock') diff --git a/drivers/hwspinlock/hwspinlock_core.c b/drivers/hwspinlock/hwspinlock_core.c index 43a62714b4fb..af5175c5d5f4 100644 --- a/drivers/hwspinlock/hwspinlock_core.c +++ b/drivers/hwspinlock/hwspinlock_core.c @@ -352,7 +352,7 @@ static int __hwspin_lock_request(struct hwspinlock *hwlock) int ret; /* prevent underlying implementation from being removed */ - if (!try_module_get(hwlock->owner)) { + if (!try_module_get(hwlock->dev->driver->owner)) { dev_err(hwlock->dev, "%s: can't get owner\n", __func__); return -EINVAL; } @@ -535,7 +535,7 @@ int hwspin_lock_free(struct hwspinlock *hwlock) /* sanity check (this shouldn't happen) */ WARN_ON(tmp != hwlock); - module_put(hwlock->owner); + module_put(hwlock->dev->driver->owner); out: spin_unlock(&hwspinlock_tree_lock); diff --git a/drivers/hwspinlock/hwspinlock_internal.h b/drivers/hwspinlock/hwspinlock_internal.h index 69935e6b93e5..fb25830c2ee7 100644 --- a/drivers/hwspinlock/hwspinlock_internal.h +++ b/drivers/hwspinlock/hwspinlock_internal.h @@ -44,10 +44,9 @@ struct hwspinlock_ops { * @ops: platform-specific hwspinlock handlers * @id: a global, unique, system-wide, index of the lock. * @lock: initialized and used by hwspinlock core - * @owner: underlying implementation module, used to maintain module ref count * * Note: currently simplicity was opted for, but later we can squeeze some - * memory bytes by grouping the dev, ops and owner members in a single + * memory bytes by grouping dev, ops in a single * per-platform struct, and have all hwspinlocks point at it. */ struct hwspinlock { @@ -55,7 +54,6 @@ struct hwspinlock { const struct hwspinlock_ops *ops; int id; spinlock_t lock; - struct module *owner; }; #endif /* __HWSPINLOCK_HWSPINLOCK_H */ diff --git a/drivers/hwspinlock/omap_hwspinlock.c b/drivers/hwspinlock/omap_hwspinlock.c index a8f02734c026..1d19fe9324a4 100644 --- a/drivers/hwspinlock/omap_hwspinlock.c +++ b/drivers/hwspinlock/omap_hwspinlock.c @@ -143,7 +143,6 @@ static int __devinit omap_hwspinlock_probe(struct platform_device *pdev) } omap_lock->lock.dev = &pdev->dev; - omap_lock->lock.owner = THIS_MODULE; omap_lock->lock.id = i; omap_lock->lock.ops = &omap_hwspinlock_ops; omap_lock->addr = io_base + LOCK_BASE_OFFSET + sizeof(u32) * i; @@ -208,6 +207,7 @@ static struct platform_driver omap_hwspinlock_driver = { .remove = omap_hwspinlock_remove, .driver = { .name = "omap_hwspinlock", + .owner = THIS_MODULE, }, }; -- cgit v1.2.3