Re: [PATCH V3 02/16] platform/x86/intel/vsec: remove platform_info from vsec device structure

Ilpo Järvinen
2023-10-12T15:32:21Z

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On Wed, 11 Oct 2023, David E. Box wrote:

> In preparation for exporting an API to register Intel Vendor Specific
> Extended Capabilities (VSEC) from other drivers, remove the pointer to
> platform_info from intel_vsec_device. This prevents a potential page fault
> when auxiliary drivers probe and attempt to dereference this pointer to
> access the needed quirks field. Instead, just add the quirks to
> intel_vsec_device.
>
> Signed-off-by: David E. Box <david.e.box@linux.intel.com>
> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
> ---
> V3 - No change
>
> V2 - New patch splitting previous PATCH 1
>
> drivers/platform/x86/intel/pmt/class.c | 2 +-
> drivers/platform/x86/intel/vsec.c | 2 +-
> drivers/platform/x86/intel/vsec.h | 2 +-
> 3 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/platform/x86/intel/pmt/class.c b/drivers/platform/x86/intel/pmt/class.c
> index f32a233470de..2ad91d2fd954 100644
> --- a/drivers/platform/x86/intel/pmt/class.c
> +++ b/drivers/platform/x86/intel/pmt/class.c
> @@ -31,7 +31,7 @@ bool intel_pmt_is_early_client_hw(struct device *dev)
> * differences from the server platforms (which use the Out Of Band
> * Management Services Module OOBMSM).
> */
> - return !!(ivdev->info->quirks & VSEC_QUIRK_EARLY_HW);
> + return !!(ivdev->quirks & VSEC_QUIRK_EARLY_HW);
> }
> EXPORT_SYMBOL_NS_GPL(intel_pmt_is_early_client_hw, INTEL_PMT);
>
> diff --git a/drivers/platform/x86/intel/vsec.c b/drivers/platform/x86/intel/vsec.c
> index 6bb233a23414..15866b7d3117 100644
> --- a/drivers/platform/x86/intel/vsec.c
> +++ b/drivers/platform/x86/intel/vsec.c
> @@ -201,7 +201,7 @@ static int intel_vsec_add_dev(struct pci_dev *pdev, struct intel_vsec_header *he
> intel_vsec_dev->pcidev = pdev;
> intel_vsec_dev->resource = res;
> intel_vsec_dev->num_resources = header->num_entries;
> - intel_vsec_dev->info = info;
> + intel_vsec_dev->quirks = info->quirks;
>
> if (header->id == VSEC_ID_SDSI)
> intel_vsec_dev->ida = &intel_vsec_sdsi_ida;
> diff --git a/drivers/platform/x86/intel/vsec.h b/drivers/platform/x86/intel/vsec.h
> index c242c07ea69c..8b9fad170503 100644
> --- a/drivers/platform/x86/intel/vsec.h
> +++ b/drivers/platform/x86/intel/vsec.h
> @@ -79,11 +79,11 @@ struct intel_vsec_device {
> struct pci_dev *pcidev;
> struct resource *resource;
> struct ida *ida;
> - struct intel_vsec_platform_info *info;
> int num_resources;
> int id; /* xa */

What is this based on??

Unfortunately, I couldn't review some of your later patches efficiently
because this patch failed to apply.

--
i.