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From:   Vineeth Pillai <vineethrp@gmail.com>
Date:   Mon, 27 Apr 2020 16:12:39 -0400
Message-ID: <CAOBnfPi+ztJ7vtgQ9qcHhGKDB8QKW3F=_9MR2roQOBLfrtqbDg@mail.gmail.com>
Subject: Re: [PATCH] mmc: sdhci-pci-gli: Fix no irq handler from suspend
To:     Ben Chuang <benchuanggli@gmail.com>
Cc:     adrian.hunter@intel.com, ulf.hansson@linaro.org,
        linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
        =?UTF-8?B?QmVuQ2h1YW5nW+iOiuaZuumHj10=?= 
        <ben.chuang@genesyslogic.com.tw>,
        =?UTF-8?B?UmVuaXVzQ2hlblvpmbPlu7rlro9d?= 
        <Renius.Chen@genesyslogic.com.tw>, dflogeras2@gmail.com
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Tested-by: Vineeth Pillai <vineethrp@gmail.com>

Thanks,
Vineeth

On Mon, Apr 27, 2020 at 6:30 AM Ben Chuang <benchuanggli@gmail.com> wrote:
>
> From: Ben Chuang <ben.chuang@genesyslogic.com.tw>
>
> The kernel prints a message similar to
> "[   28.881959] do_IRQ: 5.36 No irq handler for vector"
> when GL975x resumes from suspend. Implement a resume callback to fix this.
>
> Fixes: 31e43f31890c ("mmc: sdhci-pci-gli: Enable MSI interrupt for GL975x")
> Co-developed-by: Renius Chen <renius.chen@genesyslogic.com.tw>
> Signed-off-by: Renius Chen <renius.chen@genesyslogic.com.tw>
> Tested-by: Dave Flogeras <dflogeras2@gmail.com>
> Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
> ---
>  drivers/mmc/host/sdhci-pci-gli.c | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
>
> diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c
> index ce15a05f23d4..7195dd33ac3d 100644
> --- a/drivers/mmc/host/sdhci-pci-gli.c
> +++ b/drivers/mmc/host/sdhci-pci-gli.c
> @@ -334,6 +334,18 @@ static u32 sdhci_gl9750_readl(struct sdhci_host *host, int reg)
>         return value;
>  }
>
> +#ifdef CONFIG_PM_SLEEP
> +int sdhci_pci_gli_resume(struct sdhci_pci_chip *chip)
> +{
> +       struct sdhci_pci_slot *slot = chip->slots[0];
> +
> +       pci_free_irq_vectors(slot->chip->pdev);
> +       gli_pcie_enable_msi(slot);
> +
> +       return sdhci_pci_resume_host(chip);
> +}
> +#endif
> +
>  static const struct sdhci_ops sdhci_gl9755_ops = {
>         .set_clock              = sdhci_set_clock,
>         .enable_dma             = sdhci_pci_enable_dma,
> @@ -348,6 +360,9 @@ const struct sdhci_pci_fixes sdhci_gl9755 = {
>         .quirks2        = SDHCI_QUIRK2_BROKEN_DDR50,
>         .probe_slot     = gli_probe_slot_gl9755,
>         .ops            = &sdhci_gl9755_ops,
> +#ifdef CONFIG_PM_SLEEP
> +       .resume         = sdhci_pci_gli_resume,
> +#endif
>  };
>
>  static const struct sdhci_ops sdhci_gl9750_ops = {
> @@ -366,4 +381,7 @@ const struct sdhci_pci_fixes sdhci_gl9750 = {
>         .quirks2        = SDHCI_QUIRK2_BROKEN_DDR50,
>         .probe_slot     = gli_probe_slot_gl9750,
>         .ops            = &sdhci_gl9750_ops,
> +#ifdef CONFIG_PM_SLEEP
> +       .resume         = sdhci_pci_gli_resume,
> +#endif
>  };
> --
> 2.26.2
>


-- 
Cheers,
~Vineeth

## "Its not the load that breaks you, but the way u carry it!" ##