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Message-ID: <5e38bcbd.1c69fb81.a383.c572@mx.google.com>
Date:   Mon, 03 Feb 2020 16:37:16 -0800
From:   Stephen Boyd <swboyd@...omium.org>
To:     Alexander Steffen <Alexander.Steffen@...ineon.com>,
        Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Peter Huewe <peterhuewe@....de>
Cc:     Andrey Pronin <apronin@...omium.org>, linux-kernel@...r.kernel.org,
        linux-integrity@...r.kernel.org,
        Duncan Laurie <dlaurie@...omium.org>,
        Jason Gunthorpe <jgg@...pe.ca>, Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Guenter Roeck <groeck@...omium.org>,
        Heiko Stuebner <heiko@...ech.de>
Subject: Re: [PATCH v7 4/6] tpm: tpm_tis_spi: Support cr50 devices

Quoting Alexander Steffen (2020-02-03 01:13:29)
> On 20.09.2019 20:32, Stephen Boyd wrote:
> > diff --git a/drivers/char/tpm/Makefile b/drivers/char/tpm/Makefile
> > index a01c4cab902a..c96439f11c85 100644
> > --- a/drivers/char/tpm/Makefile
> > +++ b/drivers/char/tpm/Makefile
> > @@ -21,7 +21,9 @@ tpm-$(CONFIG_EFI) += eventlog/efi.o
> >   tpm-$(CONFIG_OF) += eventlog/of.o
> >   obj-$(CONFIG_TCG_TIS_CORE) += tpm_tis_core.o
> >   obj-$(CONFIG_TCG_TIS) += tpm_tis.o
> > -obj-$(CONFIG_TCG_TIS_SPI) += tpm_tis_spi.o
> > +obj-$(CONFIG_TCG_TIS_SPI) += tpm_tis_spi_mod.o
> > +tpm_tis_spi_mod-y := tpm_tis_spi.o
> > +tpm_tis_spi_mod-$(CONFIG_TCG_TIS_SPI_CR50) += tpm_tis_spi_cr50.o
> >   obj-$(CONFIG_TCG_TIS_I2C_ATMEL) += tpm_i2c_atmel.o
> >   obj-$(CONFIG_TCG_TIS_I2C_INFINEON) += tpm_i2c_infineon.o
> >   obj-$(CONFIG_TCG_TIS_I2C_NUVOTON) += tpm_i2c_nuvoton.o
> 
> This renames the driver module from tpm_tis_spi to tpm_tis_spi_mod, was 
> this done intentionally? When trying to upgrade the kernel, this just 
> broke my test system, since all scripts expect to be able to load 
> tpm_tis_spi, which does not exist anymore with that change.
> 

I mentioned this during the review of this patch set. I thought nobody
would care, given that it's just a module name.

Can your scripts load the module based on something besides the module
name? Perhaps by using device attributes instead?

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