From: "Heiko Stübner" <heiko@sntech.de>
To: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: Stephen Boyd <swboyd@chromium.org>,
Peter Huewe <peterhuewe@gmx.de>,
Andrey Pronin <apronin@chromium.org>,
linux-kernel@vger.kernel.org, linux-integrity@vger.kernel.org,
Duncan Laurie <dlaurie@chromium.org>,
Jason Gunthorpe <jgg@ziepe.ca>, Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Guenter Roeck <groeck@chromium.org>,
Alexander Steffen <Alexander.Steffen@infineon.com>
Subject: Re: [PATCH v6 4/4] tpm: tpm_tis_spi: Support cr50 devices
Date: Sat, 07 Sep 2019 19:20:46 +0200 [thread overview]
Message-ID: <3727576.e4YuOxhLfb@diego> (raw)
In-Reply-To: <8a6f05b76c37968d494fce9e555f9c21cca83003.camel@linux.intel.com>
Hi Jarkko,
Am Samstag, 7. September 2019, 19:04:15 CEST schrieb Jarkko Sakkinen:
> On Tue, 2019-09-03 at 09:52 -0700, Stephen Boyd wrote:
> > That's fair. I'll put the Kconfig option back. There's still the small
> > issue of what to do about the module name. Should I rename the
> > tpm_tis_spi.c file to something else so that the module can keep the
> > same name? Or was the tpm_tis_spi_mod.ko trick from v5 good enough?
>
> Not sure I understood the question correctly but how I think
> this should be deployed is:
>
> - A boolean CONFIG_TCG_TIS_SPI_CR50.
> - tpm_tis_spi_cr50.c that gets compiled in as part of tpm_tis_spi
> when the config option is selected.
>
> I think this would best follow the conventions that are in place
> already. Please tell if I got something wrong or if there is some
> bottleneck in this framework but this is anyway what I would prefer
> with the knowledge I have...
There is an implementation detail to iron out:
Doing
obj-$(CONFIG_TCG_TIS_SPI) += tpm_tis_spi.o cr50_spi.o
as in this patch results in it failing to build as a module, due to them
getting compiled to separate modules, yt sharing code. So I guess doing
obj-$(CONFIG_TCG_TIS_SPI) += tpm_tis_spi.o
obj-$(CONFIG_TCG_TIS_SPI_CR50) += cr50_spi.o
will result in the same error, hence the question of doing something like
obj-$(CONFIG_TCG_TIS_SPI) += tpm_tis_spi_mod.o
tpm_tis_spi_mod-y := tpm_tis_spi.o
tpm_tis_spi_mod-$(CONFIG_TCG_TIS_SPI_CR50) += cr50_spi.o
so that sources get compiled and the module getting build from the result.
Heiko
prev parent reply other threads:[~2019-09-07 17:20 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-29 22:41 [PATCH v6 0/4] tpm: Add driver for cr50 Stephen Boyd
2019-08-29 22:41 ` [PATCH v6 1/4] dt-bindings: tpm: document properties " Stephen Boyd
2019-08-29 22:41 ` [PATCH v6 2/4] tpm: Add a flag to indicate TPM power is managed by firmware Stephen Boyd
2019-08-29 22:41 ` [PATCH v6 3/4] tpm: tpm_tis_spi: Introduce a flow control callback Stephen Boyd
2019-08-29 22:41 ` [PATCH v6 4/4] tpm: tpm_tis_spi: Support cr50 devices Stephen Boyd
2019-08-30 15:33 ` Heiko Stuebner
2019-08-30 15:40 ` Stephen Boyd
2019-09-02 16:53 ` kbuild test robot
2019-09-02 18:19 ` kbuild test robot
2019-09-03 16:39 ` Jarkko Sakkinen
2019-09-03 16:52 ` Stephen Boyd
2019-09-07 17:04 ` Jarkko Sakkinen
2019-09-07 17:20 ` Heiko Stübner [this message]
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