Merge tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

 - skip AER driver error recovery callbacks for correctable errors
   reported via ACPI APEI, as we already do for errors reported via the
   native path (Tyler Baicar)

 - fix DPC shared interrupt handling (Alex Williamson)

 - print full DPC interrupt number (Keith Busch)

 - enable DPC only if AER is available (Keith Busch)

 - simplify DPC code (Bjorn Helgaas)

 - calculate ASPM L1 substate parameter instead of hardcoding it (Bjorn
   Helgaas)

 - enable Latency Tolerance Reporting for ASPM L1 substates (Bjorn
   Helgaas)

 - move ASPM internal interfaces out of public header (Bjorn Helgaas)

 - allow hot-removal of VGA devices (Mika Westerberg)

 - speed up unplug and shutdown by assuming Thunderbolt controllers
   don't support Command Completed events (Lukas Wunner)

 - add AtomicOps support for GPU and Infiniband drivers (Felix Kuehling,
   Jay Cornwall)

 - expose "ari_enabled" in sysfs to help NIC naming (Stuart Hayes)

 - clean up PCI DMA interface usage (Christoph Hellwig)

 - remove PCI pool API (replaced with DMA pool) (Romain Perier)

 - deprecate pci_get_bus_and_slot(), which assumed PCI domain 0 (Sinan
   Kaya)

 - move DT PCI code from drivers/of/ to drivers/pci/ (Rob Herring)

 - add PCI-specific wrappers for dev_info(), etc (Frederick Lawler)

 - remove warnings on sysfs mmap failure (Bjorn Helgaas)

 - quiet ROM validation messages (Alex Deucher)

 - remove redundant memory alloc failure messages (Markus Elfring)

 - fill in types for compile-time VGA and other I/O port resources
   (Bjorn Helgaas)

 - make "pci=pcie_scan_all" work for Root Ports as well as Downstream
   Ports to help AmigaOne X1000 (Bjorn Helgaas)

 - add SPDX tags to all PCI files (Bjorn Helgaas)

 - quirk Marvell 9128 DMA aliases (Alex Williamson)

 - quirk broken INTx disable on Ceton InfiniTV4 (Bjorn Helgaas)

 - fix CONFIG_PCI=n build by adding dummy pci_irqd_intx_xlate() (Niklas
   Cassel)

 - use DMA API to get MSI address for DesignWare IP (Niklas Cassel)

 - fix endpoint-mode DMA mask configuration (Kishon Vijay Abraham I)

 - fix ARTPEC-6 incorrect IS_ERR() usage (Wei Yongjun)

 - add support for ARTPEC-7 SoC (Niklas Cassel)

 - add endpoint-mode support for ARTPEC (Niklas Cassel)

 - add Cadence PCIe host and endpoint controller driver (Cyrille
   Pitchen)

 - handle multiple INTx status bits being set in dra7xx (Vignesh R)

 - translate dra7xx hwirq range to fix INTD handling (Vignesh R)

 - remove deprecated Exynos PHY initialization code (Jaehoon Chung)

 - fix MSI erratum workaround for HiSilicon Hip06/Hip07 (Dongdong Liu)

 - fix NULL pointer dereference in iProc BCMA driver (Ray Jui)

 - fix Keystone interrupt-controller-node lookup (Johan Hovold)

 - constify qcom driver structures (Julia Lawall)

 - rework Tegra config space mapping to increase space available for
   endpoints (Vidya Sagar)

 - simplify Tegra driver by using bus->sysdata (Manikanta Maddireddy)

 - remove PCI_REASSIGN_ALL_BUS usage on Tegra (Manikanta Maddireddy)

 - add support for Global Fabric Manager Server (GFMS) event to
   Microsemi Switchtec switch driver (Logan Gunthorpe)

 - add IDs for Switchtec PSX 24xG3 and PSX 48xG3 (Kelvin Cao)

* tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (140 commits)
  PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller
  dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe endpoint controller
  PCI: endpoint: Fix EPF device name to support multi-function devices
  PCI: endpoint: Add the function number as argument to EPC ops
  PCI: cadence: Add host driver for Cadence PCIe controller
  dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe host controller
  PCI: Add vendor ID for Cadence
  PCI: Add generic function to probe PCI host controllers
  PCI: generic: fix missing call of pci_free_resource_list()
  PCI: OF: Add generic function to parse and allocate PCI resources
  PCI: Regroup all PCI related entries into drivers/pci/Makefile
  PCI/DPC: Reformat DPC register definitions
  PCI/DPC: Add and use DPC Status register field definitions
  PCI/DPC: Squash dpc_rp_pio_get_info() into dpc_process_rp_pio_error()
  PCI/DPC: Remove unnecessary RP PIO register structs
  PCI/DPC: Push dpc->rp_pio_status assignment into dpc_rp_pio_get_info()
  PCI/DPC: Squash dpc_rp_pio_print_error() into dpc_rp_pio_get_info()
  PCI/DPC: Make RP PIO log size check more generic
  PCI/DPC: Rename local "status" to "dpc_status"
  PCI/DPC: Squash dpc_rp_pio_print_tlp_header() into dpc_rp_pio_print_error()
  ...

1 files changed, 21 insertions, 8 deletions

diff --git a/kernel/resource.c b/kernel/resource.c
index 54ba6de3757c..8c527d83ca76 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -1022,6 +1022,7 @@ static void __init __reserve_region_with_split(struct resource *root,
         struct resource *conflict;
         struct resource *res = alloc_resource(GFP_ATOMIC);
         struct resource *next_res = NULL;
+        int type = resource_type(root);
 
         if (!res)
                 return;
@@ -1029,7 +1030,7 @@ static void __init __reserve_region_with_split(struct resource *root,
         res->name = name;
         res->start = start;
         res->end = end;
-        res->flags = IORESOURCE_BUSY;
+        res->flags = type | IORESOURCE_BUSY;
         res->desc = IORES_DESC_NONE;
 
         while (1) {
@@ -1064,7 +1065,7 @@ static void __init __reserve_region_with_split(struct resource *root,
                                 next_res->name = name;
                                 next_res->start = conflict->end + 1;
                                 next_res->end = end;
-                                next_res->flags = IORESOURCE_BUSY;
+                                next_res->flags = type | IORESOURCE_BUSY;
                                 next_res->desc = IORES_DESC_NONE;
                         }
                 } else {
@@ -1478,7 +1479,7 @@ void __devm_release_region(struct device *dev, struct resource *parent,
 EXPORT_SYMBOL(__devm_release_region);
 
 /*
- * Called from init/main.c to reserve IO ports.
+ * Reserve I/O ports or memory based on "reserve=" kernel parameter.
  */
 #define MAXRESERVE 4
 static int __init reserve_setup(char *str)
@@ -1489,26 +1490,38 @@ static int __init reserve_setup(char *str)
         for (;;) {
                 unsigned int io_start, io_num;
                 int x = reserved;
+                struct resource *parent;
 
-                if (get_option (&str, &io_start) != 2)
+                if (get_option(&str, &io_start) != 2)
                         break;
-                if (get_option (&str, &io_num)   == 0)
+                if (get_option(&str, &io_num) == 0)
                         break;
                 if (x < MAXRESERVE) {
                         struct resource *res = reserve + x;
+
+                        /*
+                         * If the region starts below 0x10000, we assume it's
+                         * I/O port space; otherwise assume it's memory.
+                         */
+                        if (io_start < 0x10000) {
+                                res->flags = IORESOURCE_IO;
+                                parent = &ioport_resource;
+                        } else {
+                                res->flags = IORESOURCE_MEM;
+                                parent = &iomem_resource;
+                        }
                         res->name = "reserved";
                         res->start = io_start;
                         res->end = io_start + io_num - 1;
-                        res->flags = IORESOURCE_BUSY;
+                        res->flags |= IORESOURCE_BUSY;
                         res->desc = IORES_DESC_NONE;
                         res->child = NULL;
-                        if (request_resource(res->start >= 0x10000 ? &iomem_resource : &ioport_resource, res) == 0)
+                        if (request_resource(parent, res) == 0)
                                 reserved = x+1;
                 }
         }
         return 1;
 }
-
 __setup("reserve=", reserve_setup);
 
 /*