forked from luck/tmp_suning_uos_patched
59018b6d2a
Once upon a time, the MTD repository was using CVS. This patch therefore removes all usages of the no longer updated CVS keywords from the MTD code. This also includes code that printed them to the user. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
109 lines
2.3 KiB
C
109 lines
2.3 KiB
C
/*
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* Registration for chip drivers
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/kmod.h>
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#include <linux/spinlock.h>
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#include <linux/slab.h>
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#include <linux/mtd/map.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/compatmac.h>
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static DEFINE_SPINLOCK(chip_drvs_lock);
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static LIST_HEAD(chip_drvs_list);
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void register_mtd_chip_driver(struct mtd_chip_driver *drv)
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{
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spin_lock(&chip_drvs_lock);
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list_add(&drv->list, &chip_drvs_list);
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spin_unlock(&chip_drvs_lock);
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}
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void unregister_mtd_chip_driver(struct mtd_chip_driver *drv)
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{
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spin_lock(&chip_drvs_lock);
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list_del(&drv->list);
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spin_unlock(&chip_drvs_lock);
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}
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static struct mtd_chip_driver *get_mtd_chip_driver (const char *name)
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{
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struct list_head *pos;
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struct mtd_chip_driver *ret = NULL, *this;
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spin_lock(&chip_drvs_lock);
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list_for_each(pos, &chip_drvs_list) {
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this = list_entry(pos, typeof(*this), list);
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if (!strcmp(this->name, name)) {
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ret = this;
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break;
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}
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}
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if (ret && !try_module_get(ret->module))
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ret = NULL;
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spin_unlock(&chip_drvs_lock);
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return ret;
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}
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/* Hide all the horrid details, like some silly person taking
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get_module_symbol() away from us, from the caller. */
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struct mtd_info *do_map_probe(const char *name, struct map_info *map)
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{
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struct mtd_chip_driver *drv;
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struct mtd_info *ret;
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drv = get_mtd_chip_driver(name);
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if (!drv && !request_module("%s", name))
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drv = get_mtd_chip_driver(name);
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if (!drv)
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return NULL;
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ret = drv->probe(map);
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/* We decrease the use count here. It may have been a
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probe-only module, which is no longer required from this
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point, having given us a handle on (and increased the use
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count of) the actual driver code.
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*/
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module_put(drv->module);
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if (ret)
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return ret;
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return NULL;
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}
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/*
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* Destroy an MTD device which was created for a map device.
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* Make sure the MTD device is already unregistered before calling this
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*/
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void map_destroy(struct mtd_info *mtd)
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{
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struct map_info *map = mtd->priv;
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if (map->fldrv->destroy)
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map->fldrv->destroy(mtd);
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module_put(map->fldrv->module);
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kfree(mtd);
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}
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EXPORT_SYMBOL(register_mtd_chip_driver);
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EXPORT_SYMBOL(unregister_mtd_chip_driver);
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EXPORT_SYMBOL(do_map_probe);
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EXPORT_SYMBOL(map_destroy);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
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MODULE_DESCRIPTION("Core routines for registering and invoking MTD chip drivers");
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