linux-kernel - Re: [PATCH] fpga-manager: altera-ps-spi: preserve nCONFIG state

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Message-ID: <20180416081008.GA31469@kroah.com>
Date:   Mon, 16 Apr 2018 10:10:08 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Moritz Fischer <mdf@...nel.org>
Cc:     atull@...nel.org, linux-fpga@...r.kernel.org,
        linux-kernel@...r.kernel.org, Anatolij Gustschin <agust@...x.de>
Subject: Re: [PATCH] fpga-manager: altera-ps-spi: preserve nCONFIG state

On Sun, Apr 15, 2018 at 11:33:08AM -0700, Moritz Fischer wrote:
> From: Anatolij Gustschin <agust@...x.de>
> 
> If the driver module is loaded when FPGA is configured, the FPGA
> is reset because nconfig is pulled low (low-active gpio inited
> with GPIOD_OUT_HIGH activates the signal which means setting its
> value to low). Init nconfig with GPIOD_OUT_LOW to prevent this.
> 
> Signed-off-by: Anatolij Gustschin <agust@...x.de>
> Acked-by: Alan Tull <atull@...nel.org>
> Signed-off-by: Moritz Fischer <mdf@...nel.org>
> ---
> 
> Hi Greg,
> 
> as discussed. Can you please take this bugfix for 4.17?
> I rebased it against next.

Is it also needed in any older kernel versions?

thanks,

greg k-h