From a6c4b94659d45a04341774402184d12115c934db Mon Sep 17 00:00:00 2001 From: Yasuaki Ishimatsu Date: Fri, 12 Oct 2012 15:22:56 +1100 Subject: [PATCH] memory hotplug: suppress "Device memoryX does not have a release() function" warning 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. Signed-off-by: Yasuaki Ishimatsu Acked-by: David Rientjes Cc: Jiang Liu Cc: Minchan Kim Acked-by: KOSAKI Motohiro Cc: Wen Congyang Cc: Greg KH Signed-off-by: Andrew Morton --- drivers/base/memory.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 86c88216a503..7eb1211ab688 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); -- 2.39.5