linux-kernel - Re: [PATCH] fpga: xilinx-pr-decoupler: Use readl wrapper instead of pure readl

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Date:   Sat, 25 Mar 2023 15:38:04 +0800
From:   Xu Yilun <yilun.xu@...el.com>
To:     Tom Rix <trix@...hat.com>
Cc:     Michal Simek <michal.simek@....com>, linux-kernel@...r.kernel.org,
        monstr@...str.eu, michal.simek@...inx.com, git@...inx.com,
        Moritz Fischer <mdf@...nel.org>, Wu Hao <hao.wu@...el.com>,
        linux-arm-kernel@...ts.infradead.org, linux-fpga@...r.kernel.org
Subject: Re: [PATCH] fpga: xilinx-pr-decoupler: Use readl wrapper instead of
 pure readl

On 2023-03-21 at 10:10:14 -0700, Tom Rix wrote:
> 
> On 3/21/23 8:33 AM, Michal Simek wrote:
> > Driver has IO wrappers but xlnx_pr_decouple_read() is not used and readl is
> > used instead which is just wrong.
> > It is also generating sparse issue that xlnx_pr_decouple_read() is unused.
> > 
> > Signed-off-by: Michal Simek <michal.simek@....com>
> > ---
> > 
> > Created based on discussion with Tom here
> > https://lore.kernel.org/r/20230317230617.1673923-1-trix@redhat.com
> > ---
> >   drivers/fpga/xilinx-pr-decoupler.c | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/fpga/xilinx-pr-decoupler.c b/drivers/fpga/xilinx-pr-decoupler.c
> > index 2d9c491f7be9..b76d85449b8f 100644
> > --- a/drivers/fpga/xilinx-pr-decoupler.c
> > +++ b/drivers/fpga/xilinx-pr-decoupler.c
> > @@ -69,7 +69,7 @@ static int xlnx_pr_decoupler_enable_show(struct fpga_bridge *bridge)
> >   	if (err)
> >   		return err;
> > -	status = readl(priv->io_base);
> > +	status = xlnx_pr_decouple_read(priv, CTRL_OFFSET);
> 
> Thanks for the change.
> 
> Reviewed-by: Tom Rix <trix@...hat.com>

Acked-by: Xu Yilun <yilun.xu@...el.com>

Applied.

> 
> >   	clk_disable(priv->clk);
>