linux-kernel - Re: [PATCH] mtd: rawnand: cadence: fix address space mixup

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Message-ID: <CAK8P3a1mKOt+LMiECJn8uvgbwPkA+DNR9=cJGjKmhsgRP+p9+w@mail.gmail.com>
Date:   Thu, 9 Jan 2020 23:19:40 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Miquel Raynal <miquel.raynal@...tlin.com>
Cc:     Piotr Sroka <piotrs@...ence.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        kbuild test robot <lkp@...el.com>,
        Julia Lawall <julia.lawall@...6.fr>,
        YueHaibing <yuehaibing@...wei.com>,
        linux-mtd <linux-mtd@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mtd: rawnand: cadence: fix address space mixup

On Thu, Jan 9, 2020 at 8:21 PM Miquel Raynal <miquel.raynal@...tlin.com> wrote:
>
> Hi Arnd,
>
> Arnd Bergmann <arnd@...db.de> wrote on Tue, 10 Dec 2019 20:59:55 +0100:
>
> > dma_addr_t and pointers can are not interchangeable, and can
> > be different sizes:
> >
> > drivers/mtd/nand/raw/cadence-nand-controller.c: In function 'cadence_nand_cdma_transfer':
> > drivers/mtd/nand/raw/cadence-nand-controller.c:1283:12: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
> >             (void *)dma_buf, (void *)dma_ctrl_dat,
> >             ^
> > drivers/mtd/nand/raw/cadence-nand-controller.c:1283:29: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
> >             (void *)dma_buf, (void *)dma_ctrl_dat,
> >                              ^
> >
> > Use dma_addr_t consistently here, which cleans up a couple of casts
> > as a side-effect.
> >
> > Fixes: ec4ba01e894d ("mtd: rawnand: Add new Cadence NAND driver to MTD subsystem")
> > Signed-off-by: Arnd Bergmann <arnd@...db.de>
>
> I just realized that I received three patches for the same issue in a
> very tight timeframe about a month ago, yours was of course entirely
> valid but I choose to apply the one from someone not contributing a lot
> to encourage him, hope you don't mind :)

Sounds good to me, thanks for getting it fixed

      Arnd