From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: Jarkko Sakkinen
<jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Cc: "moderated list:TPM DEVICE DRIVER"
<tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>,
open list <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH v3] tpm: fix crash in tpm_tis deinitialization
Date: Wed, 13 Apr 2016 11:11:27 -0600 [thread overview]
Message-ID: <20160413171127.GB28411@obsidianresearch.com> (raw)
In-Reply-To: <1460532126-14435-1-git-send-email-jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
On Wed, Apr 13, 2016 at 10:22:06AM +0300, Jarkko Sakkinen wrote:
> rmmod crashes the driver because tpm_chip_unregister() already sets ops
> to NULL. This commit fixes the issue by moving tpm2_shutdown() to
> tpm_chip_unregister(). This commit is also cleanup because it removes
> duplicate code from tpm_crb and tpm_tis to the core.
>
> v2: make sending shutdown command atomic with nulling ops
> v3: forgot to amend updates, sorry :(
> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> Fixes: 4d3eac5e156a ("tpm: Provide strong locking for device
> removal")
You patch got a little mangled.. The v2/v3 should be after the
diffstat, not in the commit message and the --- after the SOB section
is missing..
Otherwise it looks fine
Reviewed-by: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
> extern int tpm2_startup(struct tpm_chip *chip, u16 startup_type);
> -extern void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type);
> +void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type);
Drop this hunk though, doesn't do anything.
If you don't like the unnecessary externs on functions then get rid of
them all in a patch.
Jason
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next prev parent reply other threads:[~2016-04-13 17:11 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-13 7:22 [PATCH v3] tpm: fix crash in tpm_tis deinitialization Jarkko Sakkinen
[not found] ` <1460532126-14435-1-git-send-email-jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2016-04-13 17:11 ` Jason Gunthorpe [this message]
2016-04-14 9:27 ` Jarkko Sakkinen
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