From: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx> Sent: Thursday, August 18, 2022 7:25 AM
>
> When drm_aperture_remove_conflicting_pci_framebuffers() fails, 'pdev'
> needs to be released with pci_dev_put().
>
> Fixes: 76c56a5affeb ("drm/hyperv: Add DRM driver for hyperv synthetic video device")
> Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
> ---
> drivers/gpu/drm/hyperv/hyperv_drm_drv.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
> b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
> index 46f6c454b820..ca4e517b95ca 100644
> --- a/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
> +++ b/drivers/gpu/drm/hyperv/hyperv_drm_drv.c
> @@ -82,7 +82,7 @@ static int hyperv_setup_gen1(struct hyperv_drm_device *hv)
> ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev,
> &hyperv_driver);
> if (ret) {
> drm_err(dev, "Not able to remove boot fb\n");
> - return ret;
> + goto error;
> }
>
> if (pci_request_region(pdev, 0, DRIVER_NAME) != 0)
> --
> 2.37.1
This patch appears to be obsoleted by commit a0ab5abced55
that was merged into 6.0-rc1. Of course, it does beg the question of
why the original function hyperv_setup_gen2(), which is now renamed
to hyperv_setup_vram(), doesn't check the return value from
drm_aperture_remove_conflicting_framebuffers().
Michael
