From: Yasuaki Ishimatsu <isimatu.yasu...@jp.fujitsu.com>
When calling remove_memory_block(), the function shows following message at
device_release().
"Device 'memory528' does not have a release() function, it is broken and must
be fixed."
The reason is memory_block's device struct does not have a release() function.
So the patch registers memory_block_release() to the device's release() function
for suppressing the warning message. Additionally, the patch moves kfree(mem)
into the release function since the release function is prepared as a means
to free a memory_block struct.
CC: Jiang Liu <liu...@gmail.com>
Cc: Minchan Kim <minchan....@gmail.com>
CC: Andrew Morton <a...@linux-foundation.org>
CC: Wen Congyang <we...@cn.fujitsu.com>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasu...@jp.fujitsu.com>
Acked-by: David Rientjes <rient...@google.com>
Acked-by: KOSAKI Motohiro <kosaki.motoh...@jp.fujitsu.com>
---
drivers/base/memory.c | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 86c8821..7eb1211 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -70,6 +70,13 @@ void unregister_memory_isolate_notifier(struct
notifier_block *nb)
}
EXPORT_SYMBOL(unregister_memory_isolate_notifier);
+static void memory_block_release(struct device *dev)
+{
+ struct memory_block *mem = container_of(dev, struct memory_block, dev);
+
+ kfree(mem);
+}
+
/*
* register_memory - Setup a sysfs device for a memory block
*/
@@ -80,6 +87,7 @@ int register_memory(struct memory_block *memory)
memory->dev.bus = &memory_subsys;
memory->dev.id = memory->start_section_nr / sections_per_block;
+ memory->dev.release = memory_block_release;
error = device_register(&memory->dev);
return error;
@@ -635,7 +643,6 @@ int remove_memory_block(unsigned long node_id, struct
mem_section *section,
mem_remove_simple_file(mem, phys_device);
mem_remove_simple_file(mem, removable);
unregister_memory(mem);
- kfree(mem);
} else
kobject_put(&mem->dev.kobj);
--
1.7.1
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