On 27/04/20 1:30 pm, Ben Chuang wrote:
> From: Ben Chuang <[email protected]>
> 
> 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 <[email protected]>
> Signed-off-by: Renius Chen <[email protected]>
> Tested-by: Dave Flogeras <[email protected]>
> Signed-off-by: Ben Chuang <[email protected]>

Acked-by: Adrian Hunter <[email protected]>

> ---
>  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
>  };
> 

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