Hi,

On 1/21/21 5:50 AM, Pan Bian wrote:
> Put the PCI device rdev on error paths to fix potential reference count
> leaks.
> 
> Signed-off-by: Pan Bian <[email protected]>

Thank you for your patch, I've applied this patch to my review-hans 
branch:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans

Note it will show up in my review-hans branch once I've pushed my
local branch there, which might take a while.

Once I've run some tests on this branch the patches there will be
added to the platform-drivers-x86/for-next branch and eventually
will be included in the pdx86 pull-request to Linus for the next
merge-window.

Regards,

Hans



> ---
>  drivers/platform/x86/amd-pmc.c | 14 +++++++++++---
>  1 file changed, 11 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/platform/x86/amd-pmc.c b/drivers/platform/x86/amd-pmc.c
> index 0102bf1c7916..df140019c4bd 100644
> --- a/drivers/platform/x86/amd-pmc.c
> +++ b/drivers/platform/x86/amd-pmc.c
> @@ -210,31 +210,39 @@ static int amd_pmc_probe(struct platform_device *pdev)
>       dev->dev = &pdev->dev;
>  
>       rdev = pci_get_domain_bus_and_slot(0, 0, PCI_DEVFN(0, 0));
> -     if (!rdev || !pci_match_id(pmc_pci_ids, rdev))
> +     if (!rdev || !pci_match_id(pmc_pci_ids, rdev)) {
> +             pci_dev_put(rdev);
>               return -ENODEV;
> +     }
>  
>       dev->cpu_id = rdev->device;
>       err = pci_write_config_dword(rdev, AMD_PMC_SMU_INDEX_ADDRESS, 
> AMD_PMC_BASE_ADDR_LO);
>       if (err) {
>               dev_err(dev->dev, "error writing to 0x%x\n", 
> AMD_PMC_SMU_INDEX_ADDRESS);
> +             pci_dev_put(rdev);
>               return pcibios_err_to_errno(err);
>       }
>  
>       err = pci_read_config_dword(rdev, AMD_PMC_SMU_INDEX_DATA, &val);
> -     if (err)
> +     if (err) {
> +             pci_dev_put(rdev);
>               return pcibios_err_to_errno(err);
> +     }
>  
>       base_addr_lo = val & AMD_PMC_BASE_ADDR_HI_MASK;
>  
>       err = pci_write_config_dword(rdev, AMD_PMC_SMU_INDEX_ADDRESS, 
> AMD_PMC_BASE_ADDR_HI);
>       if (err) {
>               dev_err(dev->dev, "error writing to 0x%x\n", 
> AMD_PMC_SMU_INDEX_ADDRESS);
> +             pci_dev_put(rdev);
>               return pcibios_err_to_errno(err);
>       }
>  
>       err = pci_read_config_dword(rdev, AMD_PMC_SMU_INDEX_DATA, &val);
> -     if (err)
> +     if (err) {
> +             pci_dev_put(rdev);
>               return pcibios_err_to_errno(err);
> +     }
>  
>       base_addr_hi = val & AMD_PMC_BASE_ADDR_LO_MASK;
>       pci_dev_put(rdev);
> 

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