[Xen-devel] [PATCH] drm/xen-front: Make structure fb_funcs constant

[Oleksandr Andrushchenko]

On 8/14/19 8:26 PM, Daniel Vetter wrote:
> On Tue, Aug 13, 2019 at 10:32:00AM +0300, Oleksandr Andrushchenko wrote:
>> On 8/13/19 9:27 AM, Nishka Dasgupta wrote:
>>> Static structure fb_funcs, of type drm_framebuffer_funcs, is used only
>>> when it is passed to drm_gem_fb_create_with_funcs() as its last
>>> argument. drm_gem_fb_create_with_funcs does not modify its lst argument
>>> (fb_funcs) and hence fb_funcs is never modified. Therefore make fb_funcs
>>> constant to protect it from further modification.
>>> Issue found with Coccinelle.
>>>
>>> Signed-off-by: Nishka Dasgupta <nishkadg.linux at gmail.com>
>> Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko at epam.com>
> I'm assuming you'll apply this to drm-misc-next too? Good to state that,
> to avoid confusion and coordination issues.
> -Daniel
>
Sorry for the delay and confusion.
Applied to drm-misc-next
>>> ---
>>>    drivers/gpu/drm/xen/xen_drm_front_kms.c | 2 +-
>>>    1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/gpu/drm/xen/xen_drm_front_kms.c b/drivers/gpu/drm/xen/xen_drm_front_kms.c
>>> index c2955d375394..4a984f45555e 100644
>>> --- a/drivers/gpu/drm/xen/xen_drm_front_kms.c
>>> +++ b/drivers/gpu/drm/xen/xen_drm_front_kms.c
>>> @@ -45,7 +45,7 @@ static void fb_destroy(struct drm_framebuffer *fb)
>>>    	drm_gem_fb_destroy(fb);
>>>    }
>>> -static struct drm_framebuffer_funcs fb_funcs = {
>>> +static const struct drm_framebuffer_funcs fb_funcs = {
>>>    	.destroy = fb_destroy,
>>>    };