From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rashmica Gupta <rashmica.g@gmail.com>
Date: Thu, 05 Sep 2019 09:17:43 +1000
Subject: [PATCH 1/4] gpio/aspeed: Fix incorrect number of banks
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References: <20190904061245.30770-1-rashmica.g@gmail.com>
 <CAHp75Vd_6Rpt5=BjzV8YFCiFP7qsRrYHHo7+=gWwnZH-zT9jNw@mail.gmail.com>
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On Wed, 2019-09-04 at 19:27 +0300, Andy Shevchenko wrote:
> On Wed, Sep 4, 2019 at 9:14 AM Rashmica Gupta <rashmica.g@gmail.com>
> wrote:
> > Fixes: 361b79119a4b7 ('gpio: Add Aspeed driver')
> > 
> > Signed-off-by: Rashmica Gupta <rashmica.g@gmail.com>
> >         /* Allocate a cache of the output registers */
> > -       banks = gpio->config->nr_gpios >> 5;
> > +       banks = (gpio->config->nr_gpios >> 5) + 1;
> 
> Shouldn't be rather DIV_ROUND_UP(nr_gpios, sizeof(u32)) ?

I agree that DIV_ROUND_UP is the right thing to use here, but wouldn't
it be DIV_ROUND_UP(nr_gpios, 32)?

> 
> >         gpio->dcache = devm_kcalloc(&pdev->dev,
> >                                     banks, sizeof(u32),
> > GFP_KERNEL);
> 
>