Subject: [PATCH 2/2] PCI: iproc: free resource list after registration

From: [email-masked] (Ray Jui)
Date: Mon, 25 May 2015 17:35:31 -0700

Hi Hauke,

On 15-05-24 01:37 PM, Hauke Mehrtens wrote:
> The resource list is only used in the setup process and was never
> freed. pci_add_resource() allocates a memory area to store the list
> item. This patch fixes the memory leak.
>
> Signed-off-by: Hauke Mehrtens <[email-masked]>
> ---
>   drivers/pci/host/pcie-iproc-bcma.c     | 8 ++++----
>   drivers/pci/host/pcie-iproc-platform.c | 8 ++++----
>   2 files changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/pci/host/pcie-iproc-bcma.c b/drivers/pci/host/pcie-iproc-bcma.c
> index f96b39e..2e4f2d6 100644
> --- a/drivers/pci/host/pcie-iproc-bcma.c
> +++ b/drivers/pci/host/pcie-iproc-bcma.c
> @@ -65,12 +65,12 @@ static int iproc_pcie_bcma_probe(struct bcma_device *bdev)
>   	pcie->map_irq = iproc_pcie_bcma_map_irq;
>
>   	ret = iproc_pcie_setup(pcie, &res);
> -	if (ret) {
> +	if (ret)
>   		dev_err(pcie->dev, "PCIe controller setup failed\n");
> -		return ret;
> -	}
>
> -	return 0;
> +	pci_free_resource_list(&res);
> +
> +	return ret;
>   }
>
>   static void iproc_pcie_bcma_remove(struct bcma_device *bdev)
> diff --git a/drivers/pci/host/pcie-iproc-platform.c b/drivers/pci/host/pcie-iproc-platform.c
> index c5fe4c1..9aedc8e 100644
> --- a/drivers/pci/host/pcie-iproc-platform.c
> +++ b/drivers/pci/host/pcie-iproc-platform.c
> @@ -72,12 +72,12 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
>   	pcie->map_irq = of_irq_parse_and_map_pci;
>
>   	ret = iproc_pcie_setup(pcie, &res);
> -	if (ret) {
> +	if (ret)
>   		dev_err(pcie->dev, "PCIe controller setup failed\n");
> -		return ret;
> -	}
>
> -	return 0;
> +	pci_free_resource_list(&res);
> +
> +	return ret;
>   }
>
>   static int iproc_pcie_pltfm_remove(struct platform_device *pdev)
>

This looks good to me and I sanity tested it on a BCM958300K Cygnus 
combo board.

Thanks,

Reviewed-by: Ray Jui <[email-masked]>
Tested-by: Ray Jui <[email-masked]>