On Mon, Jun 29, 2015 at 7:33 AM, Maninder Singh maninder1.s@samsung.com wrote:

pdd is already dereferenced before this check. So it is redundtant to validate pdd here.

Signed-off-by: Maninder Singh maninder1.s@samsung.com

drivers/gpu/drm/amd/amdkfd/kfd_process.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c index 8a1f999..4dbc4e5 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -431,8 +431,7 @@ void kfd_unbind_process_from_device(struct kfd_dev *dev, unsigned int pasid) * We don't call amd_iommu_unbind_pasid() here * because the IOMMU called us. */

•   if (pdd)
  

•           pdd->bound = false;
  

•   pdd->bound = false;
  
    mutex_unlock(&p->mutex);
  

}

1.7.9.5

Hi Maninder,

You are correct pdd was already dereferenced so this check is redundant. However, I think a better patch would be to move the check to where pdd is first acquired (a few lines above it), because I don't see there any check.

Could you please do that and resend the patch ? Use latest v4.2-rc1 label from Linus please.

Thansk,

Oded