linux-kernel - Re: [PATCH] bus: mhi: host: pci_generic: Use pcim_iomap

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Message-ID: <e30b4dc9-41bb-4f8b-992f-125001a60a54@quicinc.com>
Date: Fri, 4 Oct 2024 10:50:56 -0700
From: Mayank Rana <quic_mrana@...cinc.com>
To: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        <mhi@...ts.linux.dev>
CC: <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Loic
 Poulain <loic.poulain@...aro.org>
Subject: Re: [PATCH] bus: mhi: host: pci_generic: Use pcim_iomap_region() to
 request and map MHI BAR



On 10/3/2024 7:33 PM, Manivannan Sadhasivam wrote:
> Use of both pcim_iomap_regions() and pcim_iomap_table() APIs are
> deprecated. Hence, switch to pcim_iomap_region() API which handles both the
> request and map of the MHI BAR region.
> 
> Cc: Loic Poulain <loic.poulain@...aro.org>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> ---
> 
> Compile tested only.
> 
>   drivers/bus/mhi/host/pci_generic.c | 6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c
> index 9938bb034c1c..07645ce2119a 100644
> --- a/drivers/bus/mhi/host/pci_generic.c
> +++ b/drivers/bus/mhi/host/pci_generic.c
> @@ -917,12 +917,12 @@ static int mhi_pci_claim(struct mhi_controller *mhi_cntrl,
>   		return err;
>   	}
>   
> -	err = pcim_iomap_regions(pdev, 1 << bar_num, pci_name(pdev));
> -	if (err) {
> +	mhi_cntrl->regs = pcim_iomap_region(pdev, 1 << bar_num, pci_name(pdev));
> +	if (IS_ERR(mhi_cntrl->regs)) {
> +		err = PTR_ERR(mhi_cntrl->regs);
>   		dev_err(&pdev->dev, "failed to map pci region: %d\n", err);
>   		return err;
>   	}
> -	mhi_cntrl->regs = pcim_iomap_table(pdev)[bar_num];
>   	mhi_cntrl->reg_len = pci_resource_len(pdev, bar_num);
>   
>   	err = dma_set_mask_and_coherent(&pdev->dev, dma_mask);
Reviewed-by: Mayank Rana <quic_mrana@...cinc.com>

Regards,
Mayank