linux-kernel - Re: [PATCH] remoteproc: imx_dsp_rproc: Fix kernel test robot sparse warning

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Message-ID: <bbd3ad38-6a2d-e81f-0d72-7181674fafb5@nxp.com>
Date:   Tue, 11 Apr 2023 02:28:34 +0300
From:   Iuliana Prodan <iuliana.prodan@....com>
To:     Mathieu Poirier <mathieu.poirier@...aro.org>, andersson@...nel.org
Cc:     linux-remoteproc@...r.kernel.org, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        linux-imx@....com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] remoteproc: imx_dsp_rproc: Fix kernel test robot sparse
 warning

On 4/7/2023 7:14 PM, Mathieu Poirier wrote:
> This patch fixes the kernel test robot warning reported here:
>
> https://lore.kernel.org/bpf/642f916b.pPIKZ%2Fl%2F%2Fbw8tvIH%25lkp@intel.com/T/
>
> Fixes: 408ec1ff0caa ("remoteproc: imx_dsp_rproc: Add custom memory copy implementation for i.MX DSP Cores")
> Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>

Tested-by: Iuliana Prodan <iuliana.prodan@....com>
Reviewed-by: Iuliana Prodan <iuliana.prodan@....com>

Thanks,
Iulia


> ---
>
> Iuliana - please thest this on your side
>
> ---
>   drivers/remoteproc/imx_dsp_rproc.c | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/remoteproc/imx_dsp_rproc.c b/drivers/remoteproc/imx_dsp_rproc.c
> index 21759d9e5b7b..c805cb83cacc 100644
> --- a/drivers/remoteproc/imx_dsp_rproc.c
> +++ b/drivers/remoteproc/imx_dsp_rproc.c
> @@ -750,12 +750,12 @@ static void imx_dsp_rproc_kick(struct rproc *rproc, int vqid)
>    * The IRAM is part of the HiFi DSP.
>    * According to hw specs only 32-bits writes are allowed.
>    */
> -static int imx_dsp_rproc_memcpy(void *dest, const void *src, size_t size)
> +static int imx_dsp_rproc_memcpy(void *dst, const void *src, size_t size)
>   {
> +	void __iomem *dest = (void __iomem *)dst;
>   	const u8 *src_byte = src;
>   	const u32 *source = src;
>   	u32 affected_mask;
> -	u32 *dst = dest;
>   	int i, q, r;
>   	u32 tmp;
>   
> @@ -768,7 +768,7 @@ static int imx_dsp_rproc_memcpy(void *dest, const void *src, size_t size)
>   
>   	/* copy data in units of 32 bits at a time */
>   	for (i = 0; i < q; i++)
> -		writel(source[i], &dst[i]);
> +		writel(source[i], dest + i * 4);
>   
>   	if (r) {
>   		affected_mask = GENMASK(8 * r, 0);
> @@ -799,8 +799,8 @@ static int imx_dsp_rproc_memcpy(void *dest, const void *src, size_t size)
>    */
>   static int imx_dsp_rproc_memset(void *addr, u8 value, size_t size)
>   {
> +	void __iomem *tmp_dst = (void __iomem *)addr;
>   	u32 tmp_val = value;
> -	u32 *tmp_dst = addr;
>   	u32 affected_mask;
>   	int q, r;
>   	u32 tmp;