linux-kernel - Re: [PATCH -next] remoteproc: k3-dsp: Fix return value check in k3_dsp_rproc_of_get

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Date:   Wed, 2 Sep 2020 09:24:30 -0500
From:   Suman Anna <s-anna@...com>
To:     YueHaibing <yuehaibing@...wei.com>, <ohad@...ery.com>,
        <bjorn.andersson@...aro.org>, <mathieu.poirier@...aro.org>
CC:     <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] remoteproc: k3-dsp: Fix return value check in
 k3_dsp_rproc_of_get_memories()

On 9/2/20 9:06 AM, YueHaibing wrote:
> In case of error, the function devm_ioremap_wc() returns NULL pointer
> not ERR_PTR(). The IS_ERR() test in the return value check should be
> replaced with NULL test.

Thanks for the fix.

> 
> Fixes: 87218f96c21a ("remoteproc: k3-dsp: Add support for C71x DSPs")

This should instead be
Fixes: 6edbe024ba17 ("remoteproc: k3-dsp: Add a remoteproc driver of K3 C66x DSPs")

With that,
Acked-by: Suman Anna <s-anna@...com>

> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
> ---
>  drivers/remoteproc/ti_k3_dsp_remoteproc.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/remoteproc/ti_k3_dsp_remoteproc.c b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
> index 9011e477290c..f373df35d7d0 100644
> --- a/drivers/remoteproc/ti_k3_dsp_remoteproc.c
> +++ b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
> @@ -445,10 +445,10 @@ static int k3_dsp_rproc_of_get_memories(struct platform_device *pdev,
>  
>  		kproc->mem[i].cpu_addr = devm_ioremap_wc(dev, res->start,
>  							 resource_size(res));
> -		if (IS_ERR(kproc->mem[i].cpu_addr)) {
> +		if (!kproc->mem[i].cpu_addr) {
>  			dev_err(dev, "failed to map %s memory\n",
>  				data->mems[i].name);
> -			return PTR_ERR(kproc->mem[i].cpu_addr);
> +			return -EBUSY;
>  		}
>  		kproc->mem[i].bus_addr = res->start;
>  		kproc->mem[i].dev_addr = data->mems[i].dev_addr;
>