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From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: amirmizi6@gmail.com
Cc: Eyal.Cohen@nuvoton.com, oshrialkoby85@gmail.com,
	alexander.steffen@infineon.com, robh+dt@kernel.org,
	mark.rutland@arm.com, peterhuewe@gmx.de, jgg@ziepe.ca,
	arnd@arndb.de, gregkh@linuxfoundation.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-integrity@vger.kernel.org, oshri.alkoby@nuvoton.com,
	tmaimon77@gmail.com, gcwilson@us.ibm.com, kgoldman@us.ibm.com,
	Dan.Morav@nuvoton.com, oren.tanami@nuvoton.com,
	shmulik.hager@nuvoton.com, amir.mizinski@nuvoton.com
Subject: Re: [PATCH v4 3/7] tpm: tpm_tis: rewrite "tpm_tis_req_canceled()"
Date: Tue, 31 Mar 2020 15:13:52 +0300	[thread overview]
Message-ID: <20200331121352.GA9284@linux.intel.com> (raw)
In-Reply-To: <20200331113207.107080-4-amirmizi6@gmail.com>

On Tue, Mar 31, 2020 at 02:32:03PM +0300, amirmizi6@gmail.com wrote:
> From: Amir Mizinski <amirmizi6@gmail.com>
> 
> Using this function while read/write data resulted in aborted operation.
> After investigating according to TCG TPM Profile (PTP) Specifications,
> i found cancel should happen only if TPM_STS.commandReady bit is lit and
> couldn't find a case when the current condition is valid.
> Also only cmdReady bit need to be compared instead of the full lower status
> register byte.
> 
> Signed-off-by: Amir Mizinski <amirmizi6@gmail.com>

We don't care about spec's. We care about hardware and not all hardware
follows specifications.

Please fix the exact thing you want to fix (and please provide a fixes
tag).

/Jarkko

  reply	other threads:[~2020-03-31 12:14 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-31 11:32 [PATCH v4 0/7] Add tpm i2c ptp driver amirmizi6
2020-03-31 11:32 ` [PATCH v4 1/7] tpm: tpm_tis: Make implementation of read16 read32 write32 optional amirmizi6
2020-03-31 12:04   ` Jarkko Sakkinen
2020-03-31 11:32 ` [PATCH v4 2/7] tpm: tpm_tis: Add check_data handle to tpm_tis_phy_ops in order to check data integrity amirmizi6
2020-04-01  8:20   ` Jarkko Sakkinen
2020-04-01 20:18     ` Benoit HOUYERE
     [not found]     ` <CAMHTsUUvStPHNL-W7vtjGrtehQx22jUZbN8kLib4h+JWH3p7_w@mail.gmail.com>
2020-04-02 20:17       ` Jarkko Sakkinen
2020-03-31 11:32 ` [PATCH v4 3/7] tpm: tpm_tis: rewrite "tpm_tis_req_canceled()" amirmizi6
2020-03-31 12:13   ` Jarkko Sakkinen [this message]
2020-03-31 13:52     ` Ken Goldman
2020-03-31 11:32 ` [PATCH v4 4/7] tpm: tpm_tis: Fix expected bit handling and send all bytes in one shot without last byte in exception amirmizi6
2020-03-31 12:17   ` Jarkko Sakkinen
2020-03-31 21:34     ` Benoit HOUYERE
2020-04-01  8:34       ` Jarkko Sakkinen
2020-03-31 11:32 ` [PATCH v4 5/7] tpm: Handle an exception for TPM Firmware Update mode amirmizi6
2020-03-31 11:32 ` [PATCH v4 6/7] dt-bindings: tpm: Add YAML schema for TPM TIS I2C options amirmizi6
2020-03-31 16:31   ` Rob Herring
2020-03-31 11:32 ` [PATCH v4 7/7] tpm: tpm_tis: add tpm_tis_i2c driver amirmizi6
2020-03-31 12:20   ` Jarkko Sakkinen
2020-03-31 15:38   ` Randy Dunlap

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