From 2db61c95c03d08bb885c87a816540e75190c924a Mon Sep 17 00:00:00 2001 From: =?utf8?q?Fernando=20Luis=20V=C3=A1zquez=20Cao?= Date: Wed, 11 Jul 2007 17:11:45 +0900 Subject: [PATCH] UBI: cleanup usage of try_module_get The use of try_module_get(THIS_MODULE) in ubi_get_device_info does not offer real protection against unexpected driver unloads, since we could be preempted before try_modules_get gets executed. It is the caller who should manipulate the refcounts. Besides, ubi_get_device_info is an exported symbol which guarantees protection when accessed through symbol_get. Signed-off-by: Fernando Luis Vazquez Cao Signed-off-by: Artem Bityutskiy --- drivers/mtd/ubi/kapi.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c index 14c66b48798..78cae494087 100644 --- a/drivers/mtd/ubi/kapi.c +++ b/drivers/mtd/ubi/kapi.c @@ -37,12 +37,8 @@ int ubi_get_device_info(int ubi_num, struct ubi_device_info *di) { const struct ubi_device *ubi; - if (!try_module_get(THIS_MODULE)) - return -ENODEV; - if (ubi_num < 0 || ubi_num >= UBI_MAX_DEVICES || !ubi_devices[ubi_num]) { - module_put(THIS_MODULE); return -ENODEV; } @@ -52,7 +48,6 @@ int ubi_get_device_info(int ubi_num, struct ubi_device_info *di) di->min_io_size = ubi->min_io_size; di->ro_mode = ubi->ro_mode; di->cdev = MKDEV(ubi->major, 0); - module_put(THIS_MODULE); return 0; } EXPORT_SYMBOL_GPL(ubi_get_device_info); -- 2.41.0