nvme-hwmon: rework to avoid devm allocation
[ Upstream commit ed7770f6 ] The original design to use device-managed resource allocation doesn't really work as the NVMe controller has a vastly different lifetime than the hwmon sysfs attributes, causing warning about duplicate sysfs entries upon reconnection. This patch reworks the hwmon allocation to avoid device-managed resource allocation, and uses the NVMe controller as parent for the sysfs attributes. Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Hannes Reinecke <hare@suse.de> Tested-by: Enzo Matsumiya <ematsumiya@suse.de> Tested-by: Daniel Wagner <dwagner@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de> Stable-dep-of: c94b7f9b ("nvme-hwmon: kmalloc the NVME SMART log buffer") Signed-off-by: Sasha Levin <sashal@kernel.org>
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