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authorRafael J. Wysocki <rjw@sisk.pl>2011-03-23 21:16:41 (GMT)
committerRafael J. Wysocki <rjw@sisk.pl>2011-03-23 21:16:41 (GMT)
commitd47d81c0e9abdc3c88653fabff5beae82c949b09 (patch)
tree1745f3316996e3cb0a02dcd7af90b88d836b6d17 /drivers
parente00e56dfd3cf1d209ce630a2b440c91e4a30bbd3 (diff)
downloadlinux-d47d81c0e9abdc3c88653fabff5beae82c949b09.tar.xz
Introduce ARCH_NO_SYSDEV_OPS config option (v2)
Introduce Kconfig option allowing architectures where sysdev operations used during system suspend, resume and shutdown have been completely replaced with struct sycore_ops operations to avoid building sysdev code that will never be used. Make callbacks in struct sys_device and struct sysdev_driver depend on ARCH_NO_SYSDEV_OPS to allows us to verify if all of the references have been actually removed from the code the given architecture depends on. Make x86 select ARCH_NO_SYSDEV_OPS. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/base/Kconfig7
-rw-r--r--drivers/base/sys.c3
2 files changed, 9 insertions, 1 deletions
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index d57e8d0..e9e5238 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -168,4 +168,11 @@ config SYS_HYPERVISOR
bool
default n
+config ARCH_NO_SYSDEV_OPS
+ bool
+ ---help---
+ To be selected by architectures that don't use sysdev class or
+ sysdev driver power management (suspend/resume) and shutdown
+ operations.
+
endmenu
diff --git a/drivers/base/sys.c b/drivers/base/sys.c
index f6fb547..fbe72da 100644
--- a/drivers/base/sys.c
+++ b/drivers/base/sys.c
@@ -329,7 +329,7 @@ void sysdev_unregister(struct sys_device *sysdev)
}
-
+#ifndef CONFIG_ARCH_NO_SYSDEV_OPS
/**
* sysdev_shutdown - Shut down all system devices.
*
@@ -524,6 +524,7 @@ int sysdev_resume(void)
return 0;
}
EXPORT_SYMBOL_GPL(sysdev_resume);
+#endif /* CONFIG_ARCH_NO_SYSDEV_OPS */
int __init system_bus_init(void)
{