linux-kernel - Re: TI: X15 the connected SSD is not detected on Linux next 20221006 tag

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Date:   Fri, 14 Oct 2022 11:37:20 +0200
From:   "Arnd Bergmann" <arnd@...db.de>
To:     "Anders Roxell" <anders.roxell@...aro.org>,
        "Damien Le Moal" <damien.lemoal@...nsource.wdc.com>
Cc:     "Naresh Kamboju" <naresh.kamboju@...aro.org>,
        "Serge Semin" <Sergey.Semin@...kalelectronics.ru>,
        "open list" <linux-kernel@...r.kernel.org>,
        "Linux ARM" <linux-arm-kernel@...ts.infradead.org>,
        regressions@...ts.linux.dev,
        "open list:LIBATA SUBSYSTEM (Serial and Parallel ATA drivers)" 
        <linux-ide@...r.kernel.org>, lkft-triage@...ts.linaro.org,
        "Lukas Bulwahn" <lukas.bulwahn@...il.com>,
        "Niklas Cassel" <niklas.cassel@....com>
Subject: Re: TI: X15 the connected SSD is not detected on Linux next 20221006 tag

On Fri, Oct 14, 2022, at 11:22 AM, Anders Roxell wrote:
> On Fri, 14 Oct 2022 at 09:53, Damien Le Moal

> Tested this patch on todays linux-next tag: next-20221014 without enabling
> CONFIG_AHCI_DWC and it worked as expected when booting [1].
> On the other hand I also tried a build/boot with CONFIG_AHCI_DWC enabled
> and it worked as expected to boot [2].

Ok, great. Can you a patch to soc@...nel.org to enable the driver in the
relevant defconfigs?

> However, during building a warning [3] popped up:
>
> make --silent --keep-going --jobs=8
> O=/home/tuxbuild/.cache/tuxmake/builds/2/build ARCH=arm
> CROSS_COMPILE=arm-linux-gnueabihf- 'CC=sccache
> arm-linux-gnueabihf-gcc' 'HOSTCC=sccache gcc'
> /builds/linux/drivers/ata/ahci_dwc.c:462:34: warning: 'ahci_dwc_plat'
> defined but not used [-Wunused-variable]
>   462 | static struct ahci_dwc_plat_data ahci_dwc_plat = {

Strange, I can't reproduce this, and the ahci_dwc_plat symbol
looks like it is clearly used in ahci_dwc_of_match[], at least
in next-20221014. Do you also see this on mainline?

      Arnd