[PATCH] powerpc/eeh: Add conditional check on notify_resume

[Michael Neuling]

On Thu, 2018-02-15 at 12:49 -0600, Bryant G. Ly wrote:
> From: "Juan J. Alvarez" <jjalvare at linux.vnet.ibm.com>
> 
> EEH structure is not populated with function
> notify resume when running on systems that do not support
> it, i.e: BMC. Hence adding a conditional check for NULL for
> systems that don't add function notify_resume.
> 
> Signed-off-by: Juan J. Alvarez <jjalvare at linux.vnet.ibm.com>
> Reviewed-by: Bryant G. Ly <bryantly at linux.vnet.ibm.com>
> Tested-by: Carol L. Soto <clsoto at us.ibm.com>

Acked-by: Michael Neuling <mikey at neuling.org>

> ---
>  arch/powerpc/kernel/eeh_driver.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/powerpc/kernel/eeh_driver.c
> b/arch/powerpc/kernel/eeh_driver.c
> index beea218..0c0b66f 100644
> --- a/arch/powerpc/kernel/eeh_driver.c
> +++ b/arch/powerpc/kernel/eeh_driver.c
> @@ -384,7 +384,8 @@ static void *eeh_report_resume(void *data, void *userdata)
>  	eeh_pcid_put(dev);
>  	pci_uevent_ers(dev, PCI_ERS_RESULT_RECOVERED);
>  #ifdef CONFIG_PCI_IOV
> -	eeh_ops->notify_resume(eeh_dev_to_pdn(edev));
> +	if (eeh_ops->notify_resume && eeh_dev_to_pdn(edev))
> +		eeh_ops->notify_resume(eeh_dev_to_pdn(edev));
>  #endif
>  	return NULL;
>  }