linux-kernel - Re: [PATCH 9/9] drm/i915/gvt: Constify vgpu

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Date:   Fri, 10 Dec 2021 08:20:54 +0000
From:   "Wang, Zhi A" <zhi.a.wang@...el.com>
To:     Rikard Falkeborn <rikard.falkeborn@...il.com>,
        Zhenyu Wang <zhenyuw@...ux.intel.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        "Joonas Lahtinen" <joonas.lahtinen@...ux.intel.com>,
        "Vivi, Rodrigo" <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
CC:     "intel-gvt-dev@...ts.freedesktop.org" 
        <intel-gvt-dev@...ts.freedesktop.org>,
        "intel-gfx@...ts.freedesktop.org" <intel-gfx@...ts.freedesktop.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 9/9] drm/i915/gvt: Constify vgpu_types

On 12/4/2021 12:55 PM, Rikard Falkeborn wrote:
> It is never modified, so make it const to allow the compiler to put it
> in read-only memory. While at it, make name a const char*.
>
> Signed-off-by: Rikard Falkeborn <rikard.falkeborn@...il.com>
> ---
>   drivers/gpu/drm/i915/gvt/vgpu.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gvt/vgpu.c b/drivers/gpu/drm/i915/gvt/vgpu.c
> index fa6b92615799..8dddd0a940a1 100644
> --- a/drivers/gpu/drm/i915/gvt/vgpu.c
> +++ b/drivers/gpu/drm/i915/gvt/vgpu.c
> @@ -77,7 +77,7 @@ void populate_pvinfo_page(struct intel_vgpu *vgpu)
>   #define VGPU_WEIGHT(vgpu_num)	\
>   	(VGPU_MAX_WEIGHT / (vgpu_num))
>   
> -static struct {
> +static const struct {
>   	unsigned int low_mm;
>   	unsigned int high_mm;
>   	unsigned int fence;
> @@ -88,7 +88,7 @@ static struct {
>   	 */
>   	unsigned int weight;
>   	enum intel_vgpu_edid edid;
> -	char *name;
> +	const char *name;
>   } vgpu_types[] = {
>   /* Fixed vGPU type table */
>   	{ MB_TO_BYTES(64), MB_TO_BYTES(384), 4, VGPU_WEIGHT(8), GVT_EDID_1024_768, "8" },

Reviewed-by: Zhi Wang <zhi.a.wang@...el.com>