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pci-v4.18-fixes-1 

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Merge tag 'pci-v4.18-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - Fix crash caused by endpoint library initialization order change
   (Alan Douglas)

 - Fix shpchp NULL pointer dereference regression on non-ACPI platforms
   (Bjorn Helgaas)

 - Move PCI_DOMAINS selection to fix build regression (Lorenzo
   Pieralisi)

* tag 'pci-v4.18-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: controller: Move PCI_DOMAINS selection to arch Kconfig
  PCI: Initialize endpoint library before controllers
  PCI: shpchp: Manage SHPC unconditionally on non-ACPI systems
This commit is contained in:
Linus Torvalds 2018-06-29 07:22:46 -07:00
parent 5e4e8c55c9 925d31668d
commit cd993fc431
6 changed files with 21 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/arm/Kconfig
View File

@ -1245,8 +1245,14 @@ config PCI
VESA. If you have PCI, say Y, otherwise N.
config PCI_DOMAINS
bool
bool "Support for multiple PCI domains"
depends on PCI
help
Enable PCI domains kernel management. Say Y if your machine
has a PCI bus hierarchy that requires more than one PCI
domain (aka segment) to be correctly managed. Say N otherwise.
If you don't know what to do here, say N.
config PCI_DOMAINS_GENERIC
def_bool PCI_DOMAINS

1
arch/arm/mach-bcm/Kconfig
View File

@ -20,6 +20,7 @@ config ARCH_BCM_IPROC
select GPIOLIB
select ARM_AMBA
select PINCTRL
select PCI_DOMAINS if PCI
help
This enables support for systems based on Broadcom IPROC architected SoCs.
The IPROC complex contains one or more ARM CPUs along with common

1
arch/arm/mach-socfpga/Kconfig
View File

@ -10,6 +10,7 @@ menuconfig ARCH_SOCFPGA
select HAVE_ARM_SCU
select HAVE_ARM_TWD if SMP
select MFD_SYSCON
select PCI_DOMAINS if PCI
if ARCH_SOCFPGA
config SOCFPGA_SUSPEND

6
drivers/pci/Makefile
View File

@ -28,10 +28,10 @@ obj-$(CONFIG_PCI_PF_STUB) += pci-pf-stub.o
obj-$(CONFIG_PCI_ECAM) += ecam.o
obj-$(CONFIG_XEN_PCIDEV_FRONTEND) += xen-pcifront.o
obj-y += controller/
obj-y += switch/
# Endpoint library must be initialized before its users
obj-$(CONFIG_PCI_ENDPOINT) += endpoint/
obj-y += controller/
obj-y += switch/
ccflags-$(CONFIG_PCI_DEBUG) := -DDEBUG

3
drivers/pci/controller/Kconfig
View File

@ -96,7 +96,6 @@ config PCI_HOST_GENERIC
depends on OF
select PCI_HOST_COMMON
select IRQ_DOMAIN
select PCI_DOMAINS
help
Say Y here if you want to support a simple generic PCI host
controller, such as the one emulated by kvmtool.
@ -138,7 +137,6 @@ config PCI_VERSATILE
config PCIE_IPROC
tristate
select PCI_DOMAINS
help
This enables the iProc PCIe core controller support for Broadcom's
iProc family of SoCs. An appropriate bus interface driver needs
@ -176,7 +174,6 @@ config PCIE_IPROC_MSI
config PCIE_ALTERA
bool "Altera PCIe controller"
depends on ARM || NIOS2 || COMPILE_TEST
select PCI_DOMAINS
help
Say Y here if you want to enable PCIe controller support on Altera
FPGA.

10
drivers/pci/hotplug/acpi_pcihp.c
View File

@ -7,7 +7,6 @@
* All rights reserved.
*
* Send feedback to <kristen.c.accardi@intel.com>
*
*/
#include <linux/module.h>
@ -87,8 +86,17 @@ int acpi_get_hp_hw_control_from_firmware(struct pci_dev *pdev)
return 0;
/* If _OSC exists, we should not evaluate OSHP */
/*
* If there's no ACPI host bridge (i.e., ACPI support is compiled
* into the kernel but the hardware platform doesn't support ACPI),
* there's nothing to do here.
*/
host = pci_find_host_bridge(pdev->bus);
root = acpi_pci_find_root(ACPI_HANDLE(&host->dev));
if (!root)
return 0;
if (root->osc_support_set)
goto no_control;