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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-09 21:03:49 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-09 21:03:49 +0200
commit80213c03c4151d900cf293ef0fc51f8d88495e14 (patch)
treeaf2422fa255aed96c23cef894e0adbf817f30c45 /drivers/pci/hotplug/cpcihp_zt5550.c
parentMerge tag 'gpio-v3.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/lin... (diff)
parentMerge branch 'pci/host-xgene' into next (diff)
downloadlinux-80213c03c4151d900cf293ef0fc51f8d88495e14.tar.xz
linux-80213c03c4151d900cf293ef0fc51f8d88495e14.zip
Merge tag 'pci-v3.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas: "The interesting things here are: - Turn on Config Request Retry Status Software Visibility. This caused hangs last time, but we included a fix this time. - Rework PCI device configuration to use _HPP/_HPX more aggressively - Allow PCI devices to be put into D3cold during system suspend - Add arm64 PCI support - Add APM X-Gene host bridge driver - Add TI Keystone host bridge driver - Add Xilinx AXI host bridge driver More detailed summary: Enumeration - Check Vendor ID only for Config Request Retry Status (Rajat Jain) - Enable Config Request Retry Status when supported (Rajat Jain) - Add generic domain handling (Catalin Marinas) - Generate uppercase hex for modalias interface class (Ricardo Ribalda Delgado) Resource management - Add missing MEM_64 mask in pci_assign_unassigned_bridge_resources() (Yinghai Lu) - Increase IBM ipr SAS Crocodile BARs to at least system page size (Douglas Lehr) PCI device hotplug - Prevent NULL dereference during pciehp probe (Andreas Noever) - Move _HPP & _HPX handling into core (Bjorn Helgaas) - Apply _HPP to PCIe devices as well as PCI (Bjorn Helgaas) - Apply _HPP/_HPX to display devices (Bjorn Helgaas) - Preserve SERR & PARITY settings when applying _HPP/_HPX (Bjorn Helgaas) - Preserve MPS and MRRS settings when applying _HPP/_HPX (Bjorn Helgaas) - Apply _HPP/_HPX to all devices, not just hot-added ones (Bjorn Helgaas) - Fix wait time in pciehp timeout message (Yinghai Lu) - Add more pciehp Slot Control debug output (Yinghai Lu) - Stop disabling pciehp notifications during init (Yinghai Lu) MSI - Remove arch_msi_check_device() (Alexander Gordeev) - Rename pci_msi_check_device() to pci_msi_supported() (Alexander Gordeev) - Move D0 check into pci_msi_check_device() (Alexander Gordeev) - Remove unused kobject from struct msi_desc (Yijing Wang) - Remove "pos" from the struct msi_desc msi_attrib (Yijing Wang) - Add "msi_bus" sysfs MSI/MSI-X control for endpoints (Yijing Wang) - Use __get_cached_msi_msg() instead of get_cached_msi_msg() (Yijing Wang) - Use __read_msi_msg() instead of read_msi_msg() (Yijing Wang) - Use __write_msi_msg() instead of write_msi_msg() (Yijing Wang) Power management - Drop unused runtime PM support code for PCIe ports (Rafael J. Wysocki) - Allow PCI devices to be put into D3cold during system suspend (Rafael J. Wysocki) AER - Add additional AER error strings (Gong Chen) - Make <linux/aer.h> standalone includable (Thierry Reding) Virtualization - Add ACS quirk for Solarflare SFC9120 & SFC9140 (Alex Williamson) - Add ACS quirk for Intel 10G NICs (Alex Williamson) - Add ACS quirk for AMD A88X southbridge (Marti Raudsepp) - Remove unused pci_find_upstream_pcie_bridge(), pci_get_dma_source() (Alex Williamson) - Add device flag helpers (Ethan Zhao) - Assume all Mellanox devices have broken INTx masking (Gavin Shan) Generic host bridge driver - Fix ioport_map() for !CONFIG_GENERIC_IOMAP (Liviu Dudau) - Add pci_register_io_range() and pci_pio_to_address() (Liviu Dudau) - Define PCI_IOBASE as the base of virtual PCI IO space (Liviu Dudau) - Fix the conversion of IO ranges into IO resources (Liviu Dudau) - Add pci_get_new_domain_nr() and of_get_pci_domain_nr() (Liviu Dudau) - Add support for parsing PCI host bridge resources from DT (Liviu Dudau) - Add pci_remap_iospace() to map bus I/O resources (Liviu Dudau) - Add arm64 architectural support for PCI (Liviu Dudau) APM X-Gene - Add APM X-Gene PCIe driver (Tanmay Inamdar) - Add arm64 DT APM X-Gene PCIe device tree nodes (Tanmay Inamdar) Freescale i.MX6 - Probe in module_init(), not fs_initcall() (Lucas Stach) - Delay enabling reference clock for SS until it stabilizes (Tim Harvey) Marvell MVEBU - Fix uninitialized variable in mvebu_get_tgt_attr() (Thomas Petazzoni) NVIDIA Tegra - Make sure the PCIe PLL is really reset (Eric Yuen) - Add error path tegra_msi_teardown_irq() cleanup (Jisheng Zhang) - Fix extended configuration space mapping (Peter Daifuku) - Implement resource hierarchy (Thierry Reding) - Clear CLKREQ# enable on port disable (Thierry Reding) - Add Tegra124 support (Thierry Reding) ST Microelectronics SPEAr13xx - Pass config resource through reg property (Pratyush Anand) Synopsys DesignWare - Use NULL instead of false (Fabio Estevam) - Parse bus-range property from devicetree (Lucas Stach) - Use pci_create_root_bus() instead of pci_scan_root_bus() (Lucas Stach) - Remove pci_assign_unassigned_resources() (Lucas Stach) - Check private_data validity in single place (Lucas Stach) - Setup and clear exactly one MSI at a time (Lucas Stach) - Remove open-coded bitmap operations (Lucas Stach) - Fix configuration base address when using 'reg' (Minghuan Lian) - Fix IO resource end address calculation (Minghuan Lian) - Rename get_msi_data() to get_msi_addr() (Minghuan Lian) - Add get_msi_data() to pcie_host_ops (Minghuan Lian) - Add support for v3.65 hardware (Murali Karicheri) - Fold struct pcie_port_info into struct pcie_port (Pratyush Anand) TI Keystone - Add TI Keystone PCIe driver (Murali Karicheri) - Limit MRSS for all downstream devices (Murali Karicheri) - Assume controller is already in RC mode (Murali Karicheri) - Set device ID based on SoC to support multiple ports (Murali Karicheri) Xilinx AXI - Add Xilinx AXI PCIe driver (Srikanth Thokala) - Fix xilinx_pcie_assign_msi() return value test (Dan Carpenter) Miscellaneous - Clean up whitespace (Quentin Lambert) - Remove assignments from "if" conditions (Quentin Lambert) - Move PCI_VENDOR_ID_VMWARE to pci_ids.h (Francesco Ruggeri) - x86: Mark DMI tables as initialization data (Mathias Krause) - x86: Move __init annotation to the correct place (Mathias Krause) - x86: Mark constants of pci_mmcfg_nvidia_mcp55() as __initconst (Mathias Krause) - x86: Constify pci_mmcfg_probes[] array (Mathias Krause) - x86: Mark PCI BIOS initialization code as such (Mathias Krause) - Parenthesize PCI_DEVID and PCI_VPD_LRDT_ID parameters (Megan Kamiya) - Remove unnecessary variable in pci_add_dynid() (Tobias Klauser)" * tag 'pci-v3.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (109 commits) arm64: dts: Add APM X-Gene PCIe device tree nodes PCI: Add ACS quirk for AMD A88X southbridge devices PCI: xgene: Add APM X-Gene PCIe driver PCI: designware: Remove open-coded bitmap operations PCI/MSI: Remove unnecessary temporary variable PCI/MSI: Use __write_msi_msg() instead of write_msi_msg() MSI/powerpc: Use __read_msi_msg() instead of read_msi_msg() PCI/MSI: Use __get_cached_msi_msg() instead of get_cached_msi_msg() PCI/MSI: Add "msi_bus" sysfs MSI/MSI-X control for endpoints PCI/MSI: Remove "pos" from the struct msi_desc msi_attrib PCI/MSI: Remove unused kobject from struct msi_desc PCI/MSI: Rename pci_msi_check_device() to pci_msi_supported() PCI/MSI: Move D0 check into pci_msi_check_device() PCI/MSI: Remove arch_msi_check_device() irqchip: armada-370-xp: Remove arch_msi_check_device() PCI/MSI/PPC: Remove arch_msi_check_device() arm64: Add architectural support for PCI PCI: Add pci_remap_iospace() to map bus I/O resources of/pci: Add support for parsing PCI host bridge resources from DT of/pci: Add pci_get_new_domain_nr() and of_get_pci_domain_nr() ... Conflicts: arch/arm64/boot/dts/apm-storm.dtsi
Diffstat (limited to 'drivers/pci/hotplug/cpcihp_zt5550.c')
-rw-r--r--drivers/pci/hotplug/cpcihp_zt5550.c44
1 files changed, 22 insertions, 22 deletions
diff --git a/drivers/pci/hotplug/cpcihp_zt5550.c b/drivers/pci/hotplug/cpcihp_zt5550.c
index 6757b3ef7e10..7ecf34e76a61 100644
--- a/drivers/pci/hotplug/cpcihp_zt5550.c
+++ b/drivers/pci/hotplug/cpcihp_zt5550.c
@@ -51,7 +51,7 @@
if (debug) \
printk (KERN_DEBUG "%s: " format "\n", \
MY_NAME , ## arg); \
- } while(0)
+ } while (0)
#define err(format, arg...) printk(KERN_ERR "%s: " format "\n", MY_NAME , ## arg)
#define info(format, arg...) printk(KERN_INFO "%s: " format "\n", MY_NAME , ## arg)
#define warn(format, arg...) printk(KERN_WARNING "%s: " format "\n", MY_NAME , ## arg)
@@ -82,13 +82,13 @@ static int zt5550_hc_config(struct pci_dev *pdev)
int ret;
/* Since we know that no boards exist with two HC chips, treat it as an error */
- if(hc_dev) {
+ if (hc_dev) {
err("too many host controller devices?");
return -EBUSY;
}
ret = pci_enable_device(pdev);
- if(ret) {
+ if (ret) {
err("cannot enable %s\n", pci_name(pdev));
return ret;
}
@@ -98,7 +98,7 @@ static int zt5550_hc_config(struct pci_dev *pdev)
dbg("pci resource start %llx", (unsigned long long)pci_resource_start(hc_dev, 1));
dbg("pci resource len %llx", (unsigned long long)pci_resource_len(hc_dev, 1));
- if(!request_mem_region(pci_resource_start(hc_dev, 1),
+ if (!request_mem_region(pci_resource_start(hc_dev, 1),
pci_resource_len(hc_dev, 1), MY_NAME)) {
err("cannot reserve MMIO region");
ret = -ENOMEM;
@@ -107,7 +107,7 @@ static int zt5550_hc_config(struct pci_dev *pdev)
hc_registers =
ioremap(pci_resource_start(hc_dev, 1), pci_resource_len(hc_dev, 1));
- if(!hc_registers) {
+ if (!hc_registers) {
err("cannot remap MMIO region %llx @ %llx",
(unsigned long long)pci_resource_len(hc_dev, 1),
(unsigned long long)pci_resource_start(hc_dev, 1));
@@ -146,7 +146,7 @@ exit_disable_device:
static int zt5550_hc_cleanup(void)
{
- if(!hc_dev)
+ if (!hc_dev)
return -ENODEV;
iounmap(hc_registers);
@@ -170,9 +170,9 @@ static int zt5550_hc_check_irq(void *dev_id)
u8 reg;
ret = 0;
- if(dev_id == zt5550_hpc.dev_id) {
+ if (dev_id == zt5550_hpc.dev_id) {
reg = readb(csr_int_status);
- if(reg)
+ if (reg)
ret = 1;
}
return ret;
@@ -182,9 +182,9 @@ static int zt5550_hc_enable_irq(void)
{
u8 reg;
- if(hc_dev == NULL) {
+ if (hc_dev == NULL)
return -ENODEV;
- }
+
reg = readb(csr_int_mask);
reg = reg & ~ENUM_INT_MASK;
writeb(reg, csr_int_mask);
@@ -195,9 +195,8 @@ static int zt5550_hc_disable_irq(void)
{
u8 reg;
- if(hc_dev == NULL) {
+ if (hc_dev == NULL)
return -ENODEV;
- }
reg = readb(csr_int_mask);
reg = reg | ENUM_INT_MASK;
@@ -210,15 +209,15 @@ static int zt5550_hc_init_one (struct pci_dev *pdev, const struct pci_device_id
int status;
status = zt5550_hc_config(pdev);
- if(status != 0) {
+ if (status != 0)
return status;
- }
+
dbg("returned from zt5550_hc_config");
memset(&zt5550_hpc, 0, sizeof (struct cpci_hp_controller));
zt5550_hpc_ops.query_enum = zt5550_hc_query_enum;
zt5550_hpc.ops = &zt5550_hpc_ops;
- if(!poll) {
+ if (!poll) {
zt5550_hpc.irq = hc_dev->irq;
zt5550_hpc.irq_flags = IRQF_SHARED;
zt5550_hpc.dev_id = hc_dev;
@@ -231,15 +230,16 @@ static int zt5550_hc_init_one (struct pci_dev *pdev, const struct pci_device_id
}
status = cpci_hp_register_controller(&zt5550_hpc);
- if(status != 0) {
+ if (status != 0) {
err("could not register cPCI hotplug controller");
goto init_hc_error;
}
dbg("registered controller");
/* Look for first device matching cPCI bus's bridge vendor and device IDs */
- if(!(bus0_dev = pci_get_device(PCI_VENDOR_ID_DEC,
- PCI_DEVICE_ID_DEC_21154, NULL))) {
+ bus0_dev = pci_get_device(PCI_VENDOR_ID_DEC,
+ PCI_DEVICE_ID_DEC_21154, NULL);
+ if (!bus0_dev) {
status = -ENODEV;
goto init_register_error;
}
@@ -247,14 +247,14 @@ static int zt5550_hc_init_one (struct pci_dev *pdev, const struct pci_device_id
pci_dev_put(bus0_dev);
status = cpci_hp_register_bus(bus0, 0x0a, 0x0f);
- if(status != 0) {
+ if (status != 0) {
err("could not register cPCI hotplug bus");
goto init_register_error;
}
dbg("registered bus");
status = cpci_hp_start();
- if(status != 0) {
+ if (status != 0) {
err("could not started cPCI hotplug system");
cpci_hp_unregister_bus(bus0);
goto init_register_error;
@@ -300,11 +300,11 @@ static int __init zt5550_init(void)
info(DRIVER_DESC " version: " DRIVER_VERSION);
r = request_region(ENUM_PORT, 1, "#ENUM hotswap signal register");
- if(!r)
+ if (!r)
return -EBUSY;
rc = pci_register_driver(&zt5550_hc_driver);
- if(rc < 0)
+ if (rc < 0)
release_region(ENUM_PORT, 1);
return rc;
}