Enhance DRM drvier to use hotplug-safe iterators to walk PCI buses.

Signed-off-by: Jiang Liu jiang.liu@huawei.com Cc: David Airlie airlied@linux.ie Cc: dri-devel@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 13fdcd1..04f3bcd 100644 --- a/drivers/gpu/drm/drm_fops.c +++ b/drivers/gpu/drm/drm_fops.c @@ -357,9 +357,11 @@ 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); + } } } #endif