linux-kernel - Re: [PATCH V2 1/2] MFD: intel_pmt: Fix nuisance messages and handling of disabled capabilities

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Date:   Wed, 24 Feb 2021 21:22:35 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     "David E. Box" <david.e.box@...ux.intel.com>, lee.jones@...aro.org,
        mgross@...ux.intel.com
Cc:     linux-kernel@...r.kernel.org, platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH V2 1/2] MFD: intel_pmt: Fix nuisance messages and handling
 of disabled capabilities

Hi,

On 2/24/21 9:10 PM, David E. Box wrote:
> Some products will be available that have PMT capabilities that are not
> supported. Remove the warnings in this instance to avoid nuisance messages
> and confusion.
> 
> Also return an error code for capabilities that are disabled by quirk to
> prevent them from keeping the driver loaded if only disabled capabilities
> are found.
> 
> Fixes: 4f8217d5b0ca ("mfd: Intel Platform Monitoring Technology support")
> Signed-off-by: David E. Box <david.e.box@...ux.intel.com>
> Reviewed-by: Hans de Goede <hdegoede@...hat.com>
> ---
> For merge in platform-drivers-x86
> 
> Based on 5.11-rc1 review-hans branch:
> https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans

Which, assuming you did a git remote update recently is AKA platform-drivers-x86-v5.12-1 .

> Changes from V1:
> 
> 	- None. Patch 2 added.

The series looks good to me, so for the series:

Reviewed-by: Hans de Goede <hdegoede@...hat.com>

Lee, since both patches touch mfd files (and patch 2 also touches files under drivers/platform/x86)
I think it would be best if you just merge the entire series.

As always I would appreciate a pull-req from you to also pull the changes
into my tree, in case further drivers/platform/x86/intel_pmt* changes
show up during this cycle.

Regards,

Hans






> 
>  drivers/mfd/intel_pmt.c | 11 +++--------
>  1 file changed, 3 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/mfd/intel_pmt.c b/drivers/mfd/intel_pmt.c
> index 744b230cdcca..65da2b17a204 100644
> --- a/drivers/mfd/intel_pmt.c
> +++ b/drivers/mfd/intel_pmt.c
> @@ -79,19 +79,18 @@ static int pmt_add_dev(struct pci_dev *pdev, struct intel_dvsec_header *header,
>  	case DVSEC_INTEL_ID_WATCHER:
>  		if (quirks & PMT_QUIRK_NO_WATCHER) {
>  			dev_info(dev, "Watcher not supported\n");
> -			return 0;
> +			return -EINVAL;
>  		}
>  		name = "pmt_watcher";
>  		break;
>  	case DVSEC_INTEL_ID_CRASHLOG:
>  		if (quirks & PMT_QUIRK_NO_CRASHLOG) {
>  			dev_info(dev, "Crashlog not supported\n");
> -			return 0;
> +			return -EINVAL;
>  		}
>  		name = "pmt_crashlog";
>  		break;
>  	default:
> -		dev_err(dev, "Unrecognized PMT capability: %d\n", id);
>  		return -EINVAL;
>  	}
>  
> @@ -174,12 +173,8 @@ static int pmt_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
>  		header.offset = INTEL_DVSEC_TABLE_OFFSET(table);
>  
>  		ret = pmt_add_dev(pdev, &header, quirks);
> -		if (ret) {
> -			dev_warn(&pdev->dev,
> -				 "Failed to add device for DVSEC id %d\n",
> -				 header.id);
> +		if (ret)
>  			continue;
> -		}
>  
>  		found_devices = true;
>  	} while (true);
> 
> base-commit: a7d53dbbc70a81d5781da7fc905b656f41ad2381
>