From a520a536408287c1d956386e10f07641b15987d4 Mon Sep 17 00:00:00 2001 From: Jean-Philippe Brucker Date: Mon, 27 May 2019 20:22:01 +0800 Subject: [PATCH] PCI: Init PCIe feature bits for managed host bridge alloc commit 6302bf3ef78dd210b5ff4a922afcb7d8eff8a211 upstream. Two functions allocate a host bridge: devm_pci_alloc_host_bridge() and pci_alloc_host_bridge(). At the moment, only the unmanaged one initializes the PCIe feature bits, which prevents from using features such as hotplug or AER on some systems, when booting with device tree. Make the initialization code common. Fixes: 02bfeb484230 ("PCI/portdrv: Simplify PCIe feature permission checking") Signed-off-by: Jean-Philippe Brucker Signed-off-by: Bjorn Helgaas CC: stable@vger.kernel.org # v4.17+ Signed-off-by: Greg Kroah-Hartman Signed-off-by: Yang Yingliang --- drivers/pci/probe.c | 23 ++++++++++++++--------- 1 file changed, 14 insertions(+), 9 deletions(-) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 6c06fa59e733..f89af91f6675 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -586,16 +586,9 @@ static void pci_release_host_bridge_dev(struct device *dev) kfree(to_pci_host_bridge(dev)); } -struct pci_host_bridge *pci_alloc_host_bridge(size_t priv) +static void pci_init_host_bridge(struct pci_host_bridge *bridge) { - struct pci_host_bridge *bridge; - - bridge = kzalloc(sizeof(*bridge) + priv, GFP_KERNEL); - if (!bridge) - return NULL; - INIT_LIST_HEAD(&bridge->windows); - bridge->dev.release = pci_release_host_bridge_dev; /* * We assume we can manage these PCIe features. Some systems may @@ -608,6 +601,18 @@ struct pci_host_bridge *pci_alloc_host_bridge(size_t priv) bridge->native_shpc_hotplug = 1; bridge->native_pme = 1; bridge->native_ltr = 1; +} + +struct pci_host_bridge *pci_alloc_host_bridge(size_t priv) +{ + struct pci_host_bridge *bridge; + + bridge = kzalloc(sizeof(*bridge) + priv, GFP_KERNEL); + if (!bridge) + return NULL; + + pci_init_host_bridge(bridge); + bridge->dev.release = pci_release_host_bridge_dev; return bridge; } @@ -622,7 +627,7 @@ struct pci_host_bridge *devm_pci_alloc_host_bridge(struct device *dev, if (!bridge) return NULL; - INIT_LIST_HEAD(&bridge->windows); + pci_init_host_bridge(bridge); bridge->dev.release = devm_pci_release_host_bridge_dev; return bridge; -- GitLab