linux-kernel - Re: [PATCH 08/12] misc: Flexcard misc device support

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Date:   Wed, 14 Dec 2016 09:42:45 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Holger Dengler <dengler@...utronix.de>
Cc:     Lee Jones <lee.jones@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Vinod Koul <vinod.koul@...el.com>,
        linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Sebastian Siewior <bigeasy@...utronix.de>,
        Juergen Bubeck <bubeck@...ug.com>,
        Peter Mahler <mahler@...ug.com>,
        Benedikt Spranger <b.spranger@...utronix.de>
Subject: Re: [PATCH 08/12] misc: Flexcard misc device support

On Wednesday, December 14, 2016 1:11:49 AM CET Holger Dengler wrote:
> The Flexcard PCI BAR0 contain registers for configuration but also
> for informational purpose like error counter, statistical information
> and some timestamps. The read-only mmap of the misc device offers the
> userspace a fast access to these registers.
> 
> Signed-off-by: Benedikt Spranger <b.spranger@...utronix.de>
> Signed-off-by: Holger Dengler <dengler@...utronix.de>
> cc: Arnd Bergmann <arnd@...db.de>
> cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> ---
>  drivers/mfd/Kconfig          |   1 +
>  drivers/misc/Kconfig         |   6 ++
>  drivers/misc/Makefile        |   1 +
>  drivers/misc/flexcard_misc.c | 165 +++++++++++++++++++++++++++++++++++++++++++
>  4 files changed, 173 insertions(+)
>  create mode 100644 drivers/misc/flexcard_misc.c
> 

Maybe this could fit better in drivers/uio/ than drivers/misc? It
seems to only export a memory mapped device.

	Arnd