linux-kernel - Re: [PATCH -next] soc/qbman: fix implicit header dependency now causing build fails

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Date:   Wed, 3 May 2017 10:42:40 +0200
From:   Joerg Roedel <jroedel@...e.de>
To:     Paul Gortmaker <paul.gortmaker@...driver.com>
Cc:     linux-kernel@...r.kernel.org, linux-next@...r.kernel.org,
        Scott Wood <oss@...error.net>, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH -next] soc/qbman: fix implicit header dependency now
 causing build fails

Hi Paul,

On Tue, May 02, 2017 at 06:21:12PM -0400, Paul Gortmaker wrote:
> In commit 461a6946b1f9 ("iommu: Remove pci.h include from
> trace/events/iommu.h") that header shuffle uncovered an implicit
> include in this driver, manifesting as:
> 
>     CC      drivers/soc/fsl/qbman/qman_portal.o
>     drivers/soc/fsl/qbman/qman_portal.c: In function 'qman_portal_probe':
>     drivers/soc/fsl/qbman/qman_portal.c:299:2: error: implicit declaration of function 'dma_set_mask'
>     drivers/soc/fsl/qbman/qman_portal.c:299:2: error: implicit declaration of function 'DMA_BIT_MASK'
>         if (dma_set_mask(dev, DMA_BIT_MASK(40))) {
>         ^
> 
> on the corenet32_smp_defconfig (and 64 bit respectively.)  The above
> commit was singled out via git bisect.
> 
> The header it was implictly relying on getting was dma-mapping.h - so
> we explicitly add it here.
> 
> Fixes: 461a6946b1f9 ("iommu: Remove pci.h include from trace/events/iommu.h")
> Cc: Joerg Roedel <jroedel@...e.de>
> Cc: Scott Wood <oss@...error.net>
> Cc: linuxppc-dev@...ts.ozlabs.org
> Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>

Thanks for catching that, I though I found all breakages caused by
removing this include. Obviously this wasn't true :)

I applied the fix to the iommu/core branch.


	Joerg