linux-kernel - Re: [PATCH] virtio-gpu: fix compilation warnings

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Date:	Mon, 07 Sep 2015 15:32:09 +0200
From:	Gerd Hoffmann <kraxel@...hat.com>
To:	Mike Rapoport <mike.rapoport@...il.com>
Cc:	David Airlie <airlied@...ux.ie>, dri-devel@...ts.freedesktop.org,
	virtualization@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] virtio-gpu: fix compilation warnings

On Mi, 2015-09-02 at 12:30 +0300, Mike Rapoport wrote:
> Update snprintf format in virtgpu_fence.c and virtgpu_debugfs.c to fix the
> following compilation warnings:
> 
> C [M]  drivers/gpu/drm/virtio/virtgpu_fence.o
> drivers/gpu/drm/virtio/virtgpu_fence.c: In function ‘virtio_timeline_value_str’ :
> drivers/gpu/drm/virtio/virtgpu_fence.c:64:2: warning: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 4 has type ‘long long int’ [-Wformat=]
>   snprintf(str, size, "%lu", atomic64_read(&fence->drv->last_seq));
>   ^
>   CC [M]  drivers/gpu/drm/virtio/virtgpu_debugfs.o
> drivers/gpu/drm/virtio/virtgpu_debugfs.c: In function ‘virtio_gpu_debugfs_irq_info’:
> drivers/gpu/drm/virtio/virtgpu_debugfs.c:39:6: warning: format ‘%ld’ expects argument of type ‘long int’, but argument 3 has type ‘long long int’ [-Wformat=]
>       vgdev->fence_drv.sync_seq);

Doesn't fly.  I assume this removes the warnings for 32bit builds, but
with the patch applied I get warnings on 64bit builds ...

cheers,
  Gerd


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