linux-kernel - Re: [PATCH -next] dmaengine: idxd: fix PCI

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Date:   Tue, 14 Jul 2020 07:58:09 -0700
From:   Dave Jiang <dave.jiang@...el.com>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>
Subject: Re: [PATCH -next] dmaengine: idxd: fix PCI_MSI build errors



On 7/13/2020 11:35 PM, Randy Dunlap wrote:
> From: Randy Dunlap <rdunlap@...radead.org>
> 
> Fix build errors when CONFIG_PCI_MSI is not enabled by making the
> driver depend on PCI_MSI:
> 
> ld: drivers/dma/idxd/device.o: in function `idxd_mask_msix_vector':
> device.c:(.text+0x26f): undefined reference to `pci_msi_mask_irq'
> ld: drivers/dma/idxd/device.o: in function `idxd_unmask_msix_vector':
> device.c:(.text+0x2af): undefined reference to `pci_msi_unmask_irq'
> 
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> Cc: Dave Jiang <dave.jiang@...el.com>
> Cc: dmaengine@...r.kernel.org
> Cc: Vinod Koul <vkoul@...nel.org>

Vinod, I submitted this fix patch last week:
https://patchwork.kernel.org/patch/11649231/

But I think maybe Randy's patch may be more preferable? You can apply this one 
and ignore my submission.

> ---
>   drivers/dma/Kconfig |    1 +
>   1 file changed, 1 insertion(+)
> 
> --- mmotm-2020-0713-1949.orig/drivers/dma/Kconfig
> +++ mmotm-2020-0713-1949/drivers/dma/Kconfig
> @@ -285,6 +285,7 @@ config INTEL_IDMA64
>   config INTEL_IDXD
>   	tristate "Intel Data Accelerators support"
>   	depends on PCI && X86_64
> +	depends on PCI_MSI
>   	depends on SBITMAP
>   	select DMA_ENGINE
>   	help
> 
>