Subject: Re: linux-next: build failure after merge of the iommu tree

From: Marc Zyngier <[email-masked]>
Date: Tue, 12 Oct 2021 09:33:48 +0100

[+ Sven]

On Tue, 12 Oct 2021 04:46:39 +0100,
Stephen Rothwell <[email-masked]> wrote:
> 
> Hi all,
> 
> After merging the iommu tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
> 
> drivers/iommu/apple-dart.c: In function 'apple_dart_get_resv_regions':
> drivers/iommu/apple-dart.c:758:2: error: implicit declaration of function 'iommu_dma_get_resv_regions'; did you mean 'iommu_get_resv_regions'? [-Werror=implicit-function-declaration]
>   758 |  iommu_dma_get_resv_regions(dev, head);
>       |  ^~~~~~~~~~~~~~~~~~~~~~~~~~
>       |  iommu_get_resv_regions
> cc1: all warnings being treated as errors
> 
> Caused by commit
> 
>   b2b2781a9755 ("iommu/dart: Clean up IOVA cookie crumbs")
> 
> interactig with commit
> 
>   05dc551614a4 ("iommu/dart: Exclude MSI doorbell from PCIe device IOVA range")
> 
> from the pci tree.
> 
> I have applied the following merge fix patch.
> 
> From: Stephen Rothwell <[email-masked]>
> Date: Tue, 12 Oct 2021 14:40:49 +1100
> Subject: [PATCH] fix for "iommu/dart: Exclude MSI doorbell from PCIe device
>  IOVA range"
> 
> Signed-off-by: Stephen Rothwell <[email-masked]>
> ---
>  drivers/iommu/apple-dart.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/iommu/apple-dart.c b/drivers/iommu/apple-dart.c
> index 912be9b7669c..280ff8df728d 100644
> --- a/drivers/iommu/apple-dart.c
> +++ b/drivers/iommu/apple-dart.c
> @@ -15,6 +15,7 @@
>  #include <linux/bitfield.h>
>  #include <linux/clk.h>
>  #include <linux/dev_printk.h>
> +#include <linux/dma-iommu.h>
>  #include <linux/dma-mapping.h>
>  #include <linux/err.h>
>  #include <linux/interrupt.h>

Thanks for fixing this. Lorenzo, do you mind slapping this on top of
the Apple PCIe series?

Thanks,

	M.

-- 
Without deviation from the norm, progress is not possible.