linux-kernel - Re: [tpmdd-devel] [PATCH] tpm: fix the cleanup of struct tpm

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Message-ID: <20160209052655.GA12657@obsidianresearch.com>
Date:	Mon, 8 Feb 2016 22:26:55 -0700
From:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:	Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
Cc:	Peter Huewe <peterhuewe@....de>, stable@...r.kernel.org,
	tpmdd-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: Re: [tpmdd-devel] [PATCH] tpm: fix the cleanup of struct tpm_chip

On Tue, Feb 09, 2016 at 05:30:30AM +0200, Jarkko Sakkinen wrote:
> If the initialization fails before tpm_chip_register(), put_device()
> will be not called, which causes release callback not to be called.
> This patch fixes the issue by adding put_device() to devres list of
> the parent device.

Erm, if you do this, then shouldn't the device_unregister change to
device_del to keep the kref balanced?

Jason