linux-kernel - Re: [PATCH 04/15] drivers: gpu: Drop unlikely before IS_ERR(_OR

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Date:	Fri, 31 Jul 2015 08:53:04 -0700
From:	"Sinclair Yeh" <syeh@...are.com>
To:	Viresh Kumar <viresh.kumar@...aro.org>
Cc:	akpm@...ux-foundation.org, linaro-kernel@...ts.linaro.org,
	linux-kernel@...r.kernel.org,
	Alexandre Courbot <acourbot@...dia.com>,
	Ben Skeggs <bskeggs@...hat.com>,
	Dave Airlie <airlied@...il.com>,
	David Airlie <airlied@...ux.ie>,
	David Herrmann <dh.herrmann@...il.com>,
	"open list:DRM DRIVERS" <dri-devel@...ts.freedesktop.org>,
	Thomas Hellstrom <thellstrom@...are.com>
Subject: Re: [PATCH 04/15] drivers: gpu: Drop unlikely before IS_ERR(_OR_NULL)

This patch:  Reviewed-by: Sinclair Yeh <syeh@...are.com>

On Fri, Jul 31, 2015 at 02:08:24PM +0530, Viresh Kumar wrote:
> IS_ERR(_OR_NULL) already contain an 'unlikely' compiler flag and there
> is no need to do that again from its callers. Drop it.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---
>  drivers/gpu/drm/ttm/ttm_tt.c            | 4 ++--
>  drivers/gpu/drm/vmwgfx/vmwgfx_context.c | 2 +-
>  drivers/gpu/drm/vmwgfx/vmwgfx_drv.c     | 2 +-
>  3 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
> index bf080abc86d1..4e19d0f9cc30 100644
> --- a/drivers/gpu/drm/ttm/ttm_tt.c
> +++ b/drivers/gpu/drm/ttm/ttm_tt.c
> @@ -340,7 +340,7 @@ int ttm_tt_swapout(struct ttm_tt *ttm, struct file *persistent_swap_storage)
>  		swap_storage = shmem_file_setup("ttm swap",
>  						ttm->num_pages << PAGE_SHIFT,
>  						0);
> -		if (unlikely(IS_ERR(swap_storage))) {
> +		if (IS_ERR(swap_storage)) {
>  			pr_err("Failed allocating swap storage\n");
>  			return PTR_ERR(swap_storage);
>  		}
> @@ -354,7 +354,7 @@ int ttm_tt_swapout(struct ttm_tt *ttm, struct file *persistent_swap_storage)
>  		if (unlikely(from_page == NULL))
>  			continue;
>  		to_page = shmem_read_mapping_page(swap_space, i);
> -		if (unlikely(IS_ERR(to_page))) {
> +		if (IS_ERR(to_page)) {
>  			ret = PTR_ERR(to_page);
>  			goto out_err;
>  		}
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_context.c b/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
> index 5ac92874404d..44e6ecba3de7 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_context.c
> @@ -159,7 +159,7 @@ static int vmw_gb_context_init(struct vmw_private *dev_priv,
>  
>  	if (dev_priv->has_mob) {
>  		uctx->man = vmw_cmdbuf_res_man_create(dev_priv);
> -		if (unlikely(IS_ERR(uctx->man))) {
> +		if (IS_ERR(uctx->man)) {
>  			ret = PTR_ERR(uctx->man);
>  			uctx->man = NULL;
>  			goto out_err;
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
> index 620bb5cf617c..6218a36cf01a 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
> @@ -1054,7 +1054,7 @@ static long vmw_generic_ioctl(struct file *filp, unsigned int cmd,
>  		return -EINVAL;
>  
>  	vmaster = vmw_master_check(dev, file_priv, flags);
> -	if (unlikely(IS_ERR(vmaster))) {
> +	if (IS_ERR(vmaster)) {
>  		ret = PTR_ERR(vmaster);
>  
>  		if (ret != -ERESTARTSYS)
> -- 
> 2.4.0
> 
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