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From:   Arnd Bergmann <arnd@arndb.de>
Date:   Fri, 28 Jun 2019 12:47:23 +0200
Message-ID: <CAK8P3a1CV-JUpBJ0pjixwXxxOzjQOX=+E3s-mKGAz_bMBc_Vuw@mail.gmail.com>
Subject: Re: [PATCH] mfd: davinci_voicecodec: remove pointless #include
To:     Lee Jones <lee.jones@linaro.org>
Cc:     Richard Fontana <rfontana@redhat.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Sekhar Nori <nsekhar@ti.com>,
        Bartosz Golaszewski <bgolaszewski@baylibre.com>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>
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Sender: linux-kernel-owner@vger.kernel.org
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[I missed the davinci maintainers on cc here, sorry]

On Fri, Jun 28, 2019 at 12:41 PM Arnd Bergmann <arnd@arndb.de> wrote:
>
> When building davinci as multiplatform, we get a build error
> in this file:
>
> drivers/mfd/davinci_voicecodec.c:22:10: fatal error: 'mach/hardware.h' file not found
>
> The header is only used to access the io_v2p() macro, but the
> result is already known because that comes from the resource
> a little bit earlier.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>  drivers/mfd/davinci_voicecodec.c | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/mfd/davinci_voicecodec.c b/drivers/mfd/davinci_voicecodec.c
> index 13ca7203e193..e5c8bc998eb4 100644
> --- a/drivers/mfd/davinci_voicecodec.c
> +++ b/drivers/mfd/davinci_voicecodec.c
> @@ -19,7 +19,6 @@
>  #include <sound/pcm.h>
>
>  #include <linux/mfd/davinci_voicecodec.h>
> -#include <mach/hardware.h>
>
>  static const struct regmap_config davinci_vc_regmap = {
>         .reg_bits = 32,
> @@ -31,6 +30,7 @@ static int __init davinci_vc_probe(struct platform_device *pdev)
>         struct davinci_vc *davinci_vc;
>         struct resource *res;
>         struct mfd_cell *cell = NULL;
> +       dma_addr_t fifo_base;
>         int ret;
>
>         davinci_vc = devm_kzalloc(&pdev->dev,
> @@ -48,6 +48,7 @@ static int __init davinci_vc_probe(struct platform_device *pdev)
>
>         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>
> +       fifo_base = (dma_addr_t)res->start;
>         davinci_vc->base = devm_ioremap_resource(&pdev->dev, res);
>         if (IS_ERR(davinci_vc->base)) {
>                 ret = PTR_ERR(davinci_vc->base);
> @@ -70,8 +71,7 @@ static int __init davinci_vc_probe(struct platform_device *pdev)
>         }
>
>         davinci_vc->davinci_vcif.dma_tx_channel = res->start;
> -       davinci_vc->davinci_vcif.dma_tx_addr =
> -               (dma_addr_t)(io_v2p(davinci_vc->base) + DAVINCI_VC_WFIFO);
> +       davinci_vc->davinci_vcif.dma_tx_addr = fifo_base + DAVINCI_VC_WFIFO;
>
>         res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
>         if (!res) {
> @@ -81,8 +81,7 @@ static int __init davinci_vc_probe(struct platform_device *pdev)
>         }
>
>         davinci_vc->davinci_vcif.dma_rx_channel = res->start;
> -       davinci_vc->davinci_vcif.dma_rx_addr =
> -               (dma_addr_t)(io_v2p(davinci_vc->base) + DAVINCI_VC_RFIFO);
> +       davinci_vc->davinci_vcif.dma_rx_addr = fifo_base + DAVINCI_VC_RFIFO;
>
>         davinci_vc->dev = &pdev->dev;
>         davinci_vc->pdev = pdev;
> --
> 2.20.0
>