linux-kernel - Re: [PATCH] staging: comedi: ii_pci20kc: add CONFIG_HAS

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Date:	Thu, 16 Oct 2014 15:36:19 +0200
From:	Greg KH <gregkh@...uxfoundation.org>
To:	David Cohen <david.a.cohen@...ux.intel.com>
Cc:	Ian Abbott <abbotti@....co.uk>, hsweeten@...ionengravers.com,
	trivial@...nel.org, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: comedi: ii_pci20kc: add CONFIG_HAS_IOMEM
 dependence

On Wed, Oct 15, 2014 at 03:06:54PM -0700, David Cohen wrote:
> On Wed, Oct 15, 2014 at 10:57:00PM +0100, Ian Abbott wrote:
> > On 15/10/14 22:25, David Cohen wrote:
> > >ii_pci20kc uses io memory which makes it not compilable on architectures
> > >without HAS_IOMEM such as UML:
> > >
> > >   CC      drivers/net/wireless/ti/wl1251/main.o
> > >drivers/staging/comedi/drivers/ii_pci20kc.c: In function ‘ii20k_attach’:
> > >drivers/staging/comedi/drivers/ii_pci20kc.c:442:2: error: implicit
> > >declaration of function ‘ioremap’
> > >[-Werror=implicit-function-declaration]
> > >   dev->mmio = ioremap(membase, II20K_SIZE);
> > >   ^
> > >drivers/staging/comedi/drivers/ii_pci20kc.c:442:12: warning: assignment
> > >makes pointer from integer without a cast
> > >   dev->mmio = ioremap(membase, II20K_SIZE);
> > >             ^
> > >drivers/staging/comedi/drivers/ii_pci20kc.c: In function ‘ii20k_detach’:
> > >drivers/staging/comedi/drivers/ii_pci20kc.c:512:3: error: implicit
> > >declaration of function ‘iounmap’
> > >[-Werror=implicit-function-declaration]
> > >    iounmap(dev->mmio);
> > >    ^
> > >
> > >Signed-off-by: David Cohen <david.a.cohen@...ux.intel.com>
> > >---
> > >  drivers/staging/comedi/Kconfig | 1 +
> > >  1 file changed, 1 insertion(+)
> > >
> > >diff --git a/drivers/staging/comedi/Kconfig b/drivers/staging/comedi/Kconfig
> > >index a8bc2b567789..56be2112c731 100644
> > >--- a/drivers/staging/comedi/Kconfig
> > >+++ b/drivers/staging/comedi/Kconfig
> > >@@ -425,6 +425,7 @@ config COMEDI_AIO_IIRO_16
> > >  	  called aio_iiro_16.
> > >
> > >  config COMEDI_II_PCI20KC
> > >+	depends on HAS_IOMEM
> > >  	tristate "Intelligent Instruments PCI-20001C carrier support"
> > >  	---help---
> > >  	  Enable support for Intelligent Instruments PCI-20001C carrier
> > >
> > 
> > The same fix was already submitted by Chen Gang:
> > 
> > https://lkml.org/lkml/2014/10/2/318
> 
> Thanks. I sent this patch based on today's linux-next's "make ARCH=um
> allyesconfig". But nevermind if it was already sent.

I can't add patches, even bugfixes, to my trees until 3.18-rc1 is out,
which is why this fix isn't in linux-next.

thanks,

greg k-h
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