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path: root/drivers/crypto/nx/nx-842-platform.c
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Diffstat (limited to 'drivers/crypto/nx/nx-842-platform.c')
-rw-r--r--drivers/crypto/nx/nx-842-platform.c84
1 files changed, 0 insertions, 84 deletions
diff --git a/drivers/crypto/nx/nx-842-platform.c b/drivers/crypto/nx/nx-842-platform.c
deleted file mode 100644
index 664f13dd0..000000000
--- a/drivers/crypto/nx/nx-842-platform.c
+++ /dev/null
@@ -1,84 +0,0 @@
-
-#include "nx-842.h"
-
-/* this is needed, separate from the main nx-842.c driver, because that main
- * driver loads the platform drivers during its init(), and it expects one
- * (or none) of the platform drivers to set this pointer to its driver.
- * That means this pointer can't be in the main nx-842 driver, because it
- * wouldn't be accessible until after the main driver loaded, which wouldn't
- * be possible as it's waiting for the platform driver to load. So place it
- * here.
- */
-static struct nx842_driver *driver;
-static DEFINE_SPINLOCK(driver_lock);
-
-struct nx842_driver *nx842_platform_driver(void)
-{
- return driver;
-}
-EXPORT_SYMBOL_GPL(nx842_platform_driver);
-
-bool nx842_platform_driver_set(struct nx842_driver *_driver)
-{
- bool ret = false;
-
- spin_lock(&driver_lock);
-
- if (!driver) {
- driver = _driver;
- ret = true;
- } else
- WARN(1, "can't set platform driver, already set to %s\n",
- driver->name);
-
- spin_unlock(&driver_lock);
- return ret;
-}
-EXPORT_SYMBOL_GPL(nx842_platform_driver_set);
-
-/* only call this from the platform driver exit function */
-void nx842_platform_driver_unset(struct nx842_driver *_driver)
-{
- spin_lock(&driver_lock);
-
- if (driver == _driver)
- driver = NULL;
- else if (driver)
- WARN(1, "can't unset platform driver %s, currently set to %s\n",
- _driver->name, driver->name);
- else
- WARN(1, "can't unset platform driver, already unset\n");
-
- spin_unlock(&driver_lock);
-}
-EXPORT_SYMBOL_GPL(nx842_platform_driver_unset);
-
-bool nx842_platform_driver_get(void)
-{
- bool ret = false;
-
- spin_lock(&driver_lock);
-
- if (driver)
- ret = try_module_get(driver->owner);
-
- spin_unlock(&driver_lock);
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(nx842_platform_driver_get);
-
-void nx842_platform_driver_put(void)
-{
- spin_lock(&driver_lock);
-
- if (driver)
- module_put(driver->owner);
-
- spin_unlock(&driver_lock);
-}
-EXPORT_SYMBOL_GPL(nx842_platform_driver_put);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Dan Streetman <ddstreet@ieee.org>");
-MODULE_DESCRIPTION("842 H/W Compression platform driver");