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drm/hyperv: Add error message for fb size greater than allocated

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Add error message when the size of requested framebuffer is more than
the allocated size by vmbus mmio region for framebuffer.

Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Link: https://lore.kernel.org/r/1649737739-10113-1-git-send-email-ssengar@linux.microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
This commit is contained in:
Saurabh Sengar 2022-04-11 21:28:59 -07:00 committed by Wei Liu
parent 23e118a48a
commit 6733dd4af7
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/hyperv/hyperv_drm_modeset.c
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@ -123,8 +123,11 @@ static int hyperv_pipe_check(struct drm_simple_display_pipe *pipe,
if (fb->format->format != DRM_FORMAT_XRGB8888) if (fb->format->format != DRM_FORMAT_XRGB8888)
return -EINVAL; return -EINVAL;
if (fb->pitches[0] * fb->height > hv->fb_size) if (fb->pitches[0] * fb->height > hv->fb_size) {
drm_err(&hv->dev, "fb size requested by %s for %dX%d (pitch %d) greater than %ld\n",
current->comm, fb->width, fb->height, fb->pitches[0], hv->fb_size);
return -EINVAL; return -EINVAL;
}
return 0; return 0;
} }