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[70.163.223.149]) by smtp.gmail.com with ESMTPSA id x34sm15083272qtd.44.2020.07.06.14.47.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Jul 2020 14:47:08 -0700 (PDT) References: <20200706205342.21333-1-jarkko.sakkinen@linux.intel.com> User-agent: mu4e 1.4.10; emacs 26.3 From: Jerry Snitselaar To: Jarkko Sakkinen Cc: linux-integrity@vger.kernel.org, Peter Huewe , Jason Gunthorpe , Arnd Bergmann , Greg Kroah-Hartman , open list Subject: Re: [PATCH] Revert commit e918e570415c ("tpm_tis: Remove the HID IFX0102") In-reply-to: <20200706205342.21333-1-jarkko.sakkinen@linux.intel.com> Date: Mon, 06 Jul 2020 14:47:07 -0700 Message-ID: <87k0zgwc2s.fsf@redhat.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Jarkko Sakkinen @ 2020-07-06 13:53 MST: > Removing IFX0102 from tpm_tis was not a right move because both tpm_tis > and tpm_infineon use the same device ID. Revert the commit and add a > remark about a bug caused by commit 93e1b7d42e1e ("[PATCH] tpm: add HID > module parameter"). > > Fixes: e918e570415c ("tpm_tis: Remove the HID IFX0102") > Reported-by: Peter Huewe > Signed-off-by: Jarkko Sakkinen Reviewed-by: Jerry Snitselaar > --- > drivers/char/tpm/tpm_tis.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c > index c58ea10fc92f..0b214963539d 100644 > --- a/drivers/char/tpm/tpm_tis.c > +++ b/drivers/char/tpm/tpm_tis.c > @@ -235,9 +235,17 @@ static int tpm_tis_pnp_init(struct pnp_dev *pnp_dev, > return tpm_tis_init(&pnp_dev->dev, &tpm_info); > } > > +/* > + * There is a known bug caused by 93e1b7d42e1e ("[PATCH] tpm: add HID module > + * parameter"). This commit added IFX0102 device ID, which is also used by > + * tpm_infineon but ignored to add quirks to probe which driver ought to be > + * used. > + */ > + > static struct pnp_device_id tpm_pnp_tbl[] = { > {"PNP0C31", 0}, /* TPM */ > {"ATM1200", 0}, /* Atmel */ > + {"IFX0102", 0}, /* Infineon */ > {"BCM0101", 0}, /* Broadcom */ > {"BCM0102", 0}, /* Broadcom */ > {"NSC1200", 0}, /* National */