From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx169.postini.com [74.125.245.169]) by kanga.kvack.org (Postfix) with SMTP id 657186B0062 for ; Fri, 19 Oct 2012 02:41:10 -0400 (EDT) From: wency@cn.fujitsu.com Subject: [PATCH v3 1/9] suppress "Device memoryX does not have a release() function" warning Date: Fri, 19 Oct 2012 14:46:34 +0800 Message-Id: <1350629202-9664-2-git-send-email-wency@cn.fujitsu.com> In-Reply-To: <1350629202-9664-1-git-send-email-wency@cn.fujitsu.com> References: <1350629202-9664-1-git-send-email-wency@cn.fujitsu.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: rientjes@google.com, liuj97@gmail.com, len.brown@intel.com, benh@kernel.crashing.org, paulus@samba.org, minchan.kim@gmail.com, akpm@linux-foundation.org, kosaki.motohiro@jp.fujitsu.com, isimatu.yasuaki@jp.fujitsu.com, Wen Congyang From: Yasuaki Ishimatsu 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 Cc: Minchan Kim CC: Andrew Morton CC: Wen Congyang Signed-off-by: Yasuaki Ishimatsu Acked-by: David Rientjes Acked-by: KOSAKI Motohiro --- 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org