[PATCH 1/2] gpu: host1x: Don't fail on NULL bo physical address

[Dmitry Osipenko]

On 02.08.2017 12:55, Mikko Perttunen wrote:
> Pinning a Host1x BO currently cannot fail and zero is a valid address
> for a BO when IOMMU is enabled. To avoid false errors remove checks
> for NULL BO physical addresses.
> 
> Fixes: 404bfb78daf3 ("gpu: host1x: Add IOMMU support")
> Signed-off-by: Mikko Perttunen <mperttunen at nvidia.com>
> ---
>  drivers/gpu/host1x/job.c | 8 --------
>  1 file changed, 8 deletions(-)
> 
> diff --git a/drivers/gpu/host1x/job.c b/drivers/gpu/host1x/job.c
> index bee504406cfc..db509ab8874e 100644
> --- a/drivers/gpu/host1x/job.c
> +++ b/drivers/gpu/host1x/job.c
> @@ -197,10 +197,6 @@ static unsigned int pin_job(struct host1x *host, struct host1x_job *job)
>  		}
>  
>  		phys_addr = host1x_bo_pin(reloc->target.bo, &sgt);
> -		if (!phys_addr) {
> -			err = -EINVAL;
> -			goto unpin;
> -		}
>  
>  		job->addr_phys[job->num_unpins] = phys_addr;
>  		job->unpins[job->num_unpins].bo = reloc->target.bo;
> @@ -225,10 +221,6 @@ static unsigned int pin_job(struct host1x *host, struct host1x_job *job)
>  		}
>  
>  		phys_addr = host1x_bo_pin(g->bo, &sgt);
> -		if (!phys_addr) {
> -			err = -EINVAL;
> -			goto unpin;
> -		}
>  
>  		if (!IS_ENABLED(CONFIG_TEGRA_HOST1X_FIREWALL) && host->domain) {
>  			for_each_sg(sgt->sgl, sg, sgt->nents, j)
> 

I think 'Fixes' tag isn't really needed for this patch since it's not a bug fix,
but a cleanup.

Reviewed-by: Dmitry Osipenko <digetx at gmail.com>

-- 
Dmitry