netdev - Re: [rtc-linux] Re: [RFC 09/15] media: platform: Add missing MFD_SYSCON dependency on HAS

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Date:	Thu, 3 Mar 2016 21:40:23 +0900
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	rtc-linux@...glegroups.com
Cc:	linux-arm-kernel@...ts.infradead.org,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Dan Williams <dan.j.williams@...el.com>,
	Vinod Koul <vinod.koul@...el.com>,
	Jason Cooper <jason@...edaemon.net>,
	Marc Zyngier <marc.zyngier@....com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Lee Jones <lee.jones@...aro.org>,
	Giuseppe Cavallaro <peppe.cavallaro@...com>,
	Kishon Vijay Abraham I <kishon@...com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Sebastian Reichel <sre@...nel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Andy Gross <andy.gross@...aro.org>,
	David Brown <david.brown@...aro.org>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org,
	linux-media@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	netdev@...r.kernel.org, linux-gpio@...r.kernel.org,
	linux-pm@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	linux-soc@...r.kernel.org, devel@...verdev.osuosl.org,
	linux-usb@...r.kernel.org,
	Krzysztof Kozlowski <k.kozlowski.k@...il.com>
Subject: Re: [rtc-linux] Re: [RFC 09/15] media: platform: Add missing
 MFD_SYSCON dependency on HAS_IOMEM

2016-03-03 19:57 GMT+09:00 Arnd Bergmann <arnd@...db.de>:
> On Thursday 03 March 2016 17:03:35 Krzysztof Kozlowski wrote:
>> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
>> index 201f5c296a95..e5931e434fa2 100644
>> --- a/drivers/media/platform/Kconfig
>> +++ b/drivers/media/platform/Kconfig
>> @@ -79,6 +79,7 @@ config VIDEO_OMAP3
>>         depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API && ARCH_OMAP3
>>         depends on HAS_DMA && OF
>>         depends on OMAP_IOMMU
>> +       depends on HAS_IOMEM    # For MFD_SYSCON
>>         select ARM_DMA_USE_IOMMU
>>         select VIDEOBUF2_DMA_CONTIG
>
> This is only built for OMAP3, so we won't get here without HAS_IOMEM

Indeed.

>
>>         select MFD_SYSCON
>> diff --git a/drivers/media/platform/exynos4-is/Kconfig b/drivers/media/platform/exynos4-is/Kconfig
>> index 57d42c6172c5..c4317b99d257 100644
>> --- a/drivers/media/platform/exynos4-is/Kconfig
>> +++ b/drivers/media/platform/exynos4-is/Kconfig
>> @@ -17,6 +17,7 @@ config VIDEO_S5P_FIMC
>>         tristate "S5P/EXYNOS4 FIMC/CAMIF camera interface driver"
>>         depends on I2C
>>         depends on HAS_DMA
>> +       depends on HAS_IOMEM    # For MFD_SYSCON
>>         select VIDEOBUF2_DMA_CONTIG
>>         select V4L2_MEM2MEM_DEV
>
> This  is guarded by HAS_DMA, which implies HAS_IOMEM afaik.

Looking at Kconfigs - no, it is not implied (or am I missing
something)... and sometimes dependency on HAS_IOMEM is next to
HAS_DMA.

BR,
Krzysztof