On Sun, May 26, 2013 at 11:53:11PM +0800, Jiang Liu wrote:
> Enhance DRM drvier to use hotplug-safe iterators to walk PCI buses.
>
> Signed-off-by: Jiang Liu <jiang....@huawei.com>
> Cc: David Airlie <airl...@linux.ie>
> Cc: dri-de...@lists.freedesktop.org
> Cc: linux-kernel@vger.kernel.org
> ---
> drivers/gpu/drm/drm_fops.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c
> index 429e07d..dc8c40b 100644
> --- a/drivers/gpu/drm/drm_fops.c
> +++ b/drivers/gpu/drm/drm_fops.c
> @@ -359,9 +359,11 @@ static int drm_open_helper(struct inode *inode, struct
> file *filp,
> pci_dev_put(pci_dev);
> }
> if (!dev->hose) {
> - struct pci_bus *b = pci_bus_b(pci_root_buses.next);
> - if (b)
> + struct pci_bus *b = pci_get_next_root_bus(NULL);
> + if (b) {
> dev->hose = b->sysdata;
> + pci_bus_put(b);
> + }
This is a gross hack to begin with, and it would be far better to get
rid of the whole "#ifdef __alpha__" block that contains this code.
I can't believe alpha is so special that it needs to do something
that no other arch needs.
> }
> }
> #endif
> --
> 1.8.1.2
>
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