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authorTang Chen <tangchen@cn.fujitsu.com>2014-08-07 03:05:13 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-07 05:01:16 +0400
commit4f7c6b49c45a398d72763d1f0e64ddff8b3653c7 (patch)
tree156a0907b39d4e8af61a729870e9013679f4c099 /drivers/base
parent1f6a6cc82ed305c09385753c80bb7b3bc9eea864 (diff)
downloadlinux-4f7c6b49c45a398d72763d1f0e64ddff8b3653c7.tar.xz
mem-hotplug: introduce MMOP_OFFLINE to replace the hard coding -1
In store_mem_state(), we have: ... 334 else if (!strncmp(buf, "offline", min_t(int, count, 7))) 335 online_type = -1; ... 355 case -1: 356 ret = device_offline(&mem->dev); 357 break; ... Here, "offline" is hard coded as -1. This patch does the following renaming: ONLINE_KEEP -> MMOP_ONLINE_KEEP ONLINE_KERNEL -> MMOP_ONLINE_KERNEL ONLINE_MOVABLE -> MMOP_ONLINE_MOVABLE and introduces MMOP_OFFLINE = -1 to avoid hard coding. Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com> Cc: Hu Tao <hutao@cn.fujitsu.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Gu Zheng <guz.fnst@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/memory.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index c6707dfb5284..7c60ed27e711 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -284,7 +284,7 @@ static int memory_subsys_online(struct device *dev)
* attribute and need to set the online_type.
*/
if (mem->online_type < 0)
- mem->online_type = ONLINE_KEEP;
+ mem->online_type = MMOP_ONLINE_KEEP;
ret = memory_block_change_state(mem, MEM_ONLINE, MEM_OFFLINE);
@@ -316,22 +316,22 @@ store_mem_state(struct device *dev,
return ret;
if (sysfs_streq(buf, "online_kernel"))
- online_type = ONLINE_KERNEL;
+ online_type = MMOP_ONLINE_KERNEL;
else if (sysfs_streq(buf, "online_movable"))
- online_type = ONLINE_MOVABLE;
+ online_type = MMOP_ONLINE_MOVABLE;
else if (sysfs_streq(buf, "online"))
- online_type = ONLINE_KEEP;
+ online_type = MMOP_ONLINE_KEEP;
else if (sysfs_streq(buf, "offline"))
- online_type = -1;
+ online_type = MMOP_OFFLINE;
else {
ret = -EINVAL;
goto err;
}
switch (online_type) {
- case ONLINE_KERNEL:
- case ONLINE_MOVABLE:
- case ONLINE_KEEP:
+ case MMOP_ONLINE_KERNEL:
+ case MMOP_ONLINE_MOVABLE:
+ case MMOP_ONLINE_KEEP:
/*
* mem->online_type is not protected so there can be a
* race here. However, when racing online, the first
@@ -342,7 +342,7 @@ store_mem_state(struct device *dev,
mem->online_type = online_type;
ret = device_online(&mem->dev);
break;
- case -1:
+ case MMOP_OFFLINE:
ret = device_offline(&mem->dev);
break;
default: