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authorLinus Torvalds <torvalds@linux-foundation.org>2015-04-13 15:45:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-13 15:45:47 -0700
commit3be1b98e073bdd4c1bb3144201a927c4a21330ba (patch)
tree6eb0619a4715d8f83388e8fd7a56f58d1c99f6cf /arch/arm
parent392b46f31f43a71c5391eb9cffe304979d2d6c30 (diff)
parent5468d5a64bf1e002e5081fa280186d0eba09fa0e (diff)
Merge tag 'pci-v4.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI changes from Bjorn Helgaas: "Enumeration - Read capability list as dwords, not bytes (Sean O. Stalley) Resource management - Don't check for PNP overlaps with unassigned PCI BARs (Bjorn Helgaas) - Mark invalid BARs as unassigned (Bjorn Helgaas) - Show driver, BAR#, and resource on pci_ioremap_bar() failure (Bjorn Helgaas) - Fail pci_ioremap_bar() on unassigned resources (Bjorn Helgaas) - Assign resources before drivers claim devices (Yijing Wang) - Claim bus resources before pci_bus_add_devices() (Yijing Wang) Power management - Optimize device state transition delays (Aaron Lu) - Don't clear ASPM bits when the FADT declares it's unsupported (Matthew Garrett) Virtualization - Add ACS quirks for Intel 1G NICs (Alex Williamson) IOMMU - Add ptr to OF node arg to of_iommu_configure() (Murali Karicheri) - Move of_dma_configure() to device.c to help re-use (Murali Karicheri) - Fix size when dma-range is not used (Murali Karicheri) - Add helper functions pci_get[put]_host_bridge_device() (Murali Karicheri) - Add of_pci_dma_configure() to update DMA configuration (Murali Karicheri) - Update DMA configuration from DT (Murali Karicheri) - dma-mapping: limit IOMMU mapping size (Murali Karicheri) - Calculate device DMA masks based on DT dma-range size (Murali Karicheri) ARM Versatile host bridge driver - Check for devm_ioremap_resource() failures (Jisheng Zhang) Broadcom iProc host bridge driver - Add Broadcom iProc PCIe driver (Ray Jui) Marvell MVEBU host bridge driver - Add suspend/resume support (Thomas Petazzoni) Renesas R-Car host bridge driver - Fix position of MSI enable bit (Nobuhiro Iwamatsu) - Write zeroes to reserved PCIEPARL bits (Nobuhiro Iwamatsu) - Change PCIEPARL and PCIEPARH to PCIEPALR and PCIEPAUR (Nobuhiro Iwamatsu) - Verify that mem_res is 64K-aligned (Nobuhiro Iwamatsu) Samsung Exynos host bridge driver - Fix INTx enablement statement termination error (Jaehoon Chung) Miscellaneous - Make a shareable UUID for PCI firmware ACPI _DSM (Aaron Lu) - Clarify policy for vendor IDs in pci.txt (Michael S. Tsirkin)" * tag 'pci-v4.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (36 commits) PCI: Read capability list as dwords, not bytes PCI: layerscape: Simplify platform_get_resource_byname() failure checking PCI: keystone: Don't dereference possible NULL pointer PCI: versatile: Check for devm_ioremap_resource() failures PCI: Don't clear ASPM bits when the FADT declares it's unsupported PCI: Clarify policy for vendor IDs in pci.txt PCI/ACPI: Optimize device state transition delays PCI: Export pci_find_host_bridge() for use inside PCI core PCI: Make a shareable UUID for PCI firmware ACPI _DSM PCI: Fix typo in Thunderbolt kernel message PCI: exynos: Fix INTx enablement statement termination error PCI: iproc: Add Broadcom iProc PCIe support PCI: iproc: Add DT docs for Broadcom iProc PCIe driver PCI: Export symbols required for loadable host driver modules PCI: Add ACS quirks for Intel 1G NICs PCI: mvebu: Add suspend/resume support PCI: Cleanup control flow sparc/PCI: Claim bus resources before pci_bus_add_devices() PCI: Assign resources before drivers claim devices (pci_scan_root_bus()) PCI: Fail pci_ioremap_bar() on unassigned resources ...
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/mach-dove/pcie.c12
-rw-r--r--arch/arm/mach-mv78xx0/pcie.c12
-rw-r--r--arch/arm/mach-orion5x/pci.c32
-rw-r--r--arch/arm/mm/dma-mapping.c7
4 files changed, 29 insertions, 34 deletions
diff --git a/arch/arm/mach-dove/pcie.c b/arch/arm/mach-dove/pcie.c
index 8a275f297522..91fe97144570 100644
--- a/arch/arm/mach-dove/pcie.c
+++ b/arch/arm/mach-dove/pcie.c
@@ -155,17 +155,13 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL, PCI_ANY_ID, rc_pci_fixup);
static struct pci_bus __init *
dove_pcie_scan_bus(int nr, struct pci_sys_data *sys)
{
- struct pci_bus *bus;
-
- if (nr < num_pcie_ports) {
- bus = pci_scan_root_bus(NULL, sys->busnr, &pcie_ops, sys,
- &sys->resources);
- } else {
- bus = NULL;
+ if (nr >= num_pcie_ports) {
BUG();
+ return NULL;
}
- return bus;
+ return pci_scan_root_bus(NULL, sys->busnr, &pcie_ops, sys,
+ &sys->resources);
}
static int __init dove_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
diff --git a/arch/arm/mach-mv78xx0/pcie.c b/arch/arm/mach-mv78xx0/pcie.c
index 445e553f4a28..097ea4cb1136 100644
--- a/arch/arm/mach-mv78xx0/pcie.c
+++ b/arch/arm/mach-mv78xx0/pcie.c
@@ -197,17 +197,13 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL, PCI_ANY_ID, rc_pci_fixup);
static struct pci_bus __init *
mv78xx0_pcie_scan_bus(int nr, struct pci_sys_data *sys)
{
- struct pci_bus *bus;
-
- if (nr < num_pcie_ports) {
- bus = pci_scan_root_bus(NULL, sys->busnr, &pcie_ops, sys,
- &sys->resources);
- } else {
- bus = NULL;
+ if (nr >= num_pcie_ports) {
BUG();
+ return NULL;
}
- return bus;
+ return pci_scan_root_bus(NULL, sys->busnr, &pcie_ops, sys,
+ &sys->resources);
}
static int __init mv78xx0_pcie_map_irq(const struct pci_dev *dev, u8 slot,
diff --git a/arch/arm/mach-orion5x/pci.c b/arch/arm/mach-orion5x/pci.c
index 87a12d6930ff..b02f3947be51 100644
--- a/arch/arm/mach-orion5x/pci.c
+++ b/arch/arm/mach-orion5x/pci.c
@@ -540,37 +540,33 @@ void __init orion5x_pci_set_cardbus_mode(void)
int __init orion5x_pci_sys_setup(int nr, struct pci_sys_data *sys)
{
- int ret = 0;
-
vga_base = ORION5X_PCIE_MEM_PHYS_BASE;
if (nr == 0) {
orion_pcie_set_local_bus_nr(PCIE_BASE, sys->busnr);
- ret = pcie_setup(sys);
- } else if (nr == 1 && !orion5x_pci_disabled) {
+ return pcie_setup(sys);
+ }
+
+ if (nr == 1 && !orion5x_pci_disabled) {
orion5x_pci_set_bus_nr(sys->busnr);
- ret = pci_setup(sys);
+ return pci_setup(sys);
}
- return ret;
+ return 0;
}
struct pci_bus __init *orion5x_pci_sys_scan_bus(int nr, struct pci_sys_data *sys)
{
- struct pci_bus *bus;
+ if (nr == 0)
+ return pci_scan_root_bus(NULL, sys->busnr, &pcie_ops, sys,
+ &sys->resources);
- if (nr == 0) {
- bus = pci_scan_root_bus(NULL, sys->busnr, &pcie_ops, sys,
- &sys->resources);
- } else if (nr == 1 && !orion5x_pci_disabled) {
- bus = pci_scan_root_bus(NULL, sys->busnr, &pci_ops, sys,
- &sys->resources);
- } else {
- bus = NULL;
- BUG();
- }
+ if (nr == 1 && !orion5x_pci_disabled)
+ return pci_scan_root_bus(NULL, sys->busnr, &pci_ops, sys,
+ &sys->resources);
- return bus;
+ BUG();
+ return NULL;
}
int __init orion5x_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index c27447653903..e315dfe3af1b 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -2027,6 +2027,13 @@ static bool arm_setup_iommu_dma_ops(struct device *dev, u64 dma_base, u64 size,
if (!iommu)
return false;
+ /*
+ * currently arm_iommu_create_mapping() takes a max of size_t
+ * for size param. So check this limit for now.
+ */
+ if (size > SIZE_MAX)
+ return false;
+
mapping = arm_iommu_create_mapping(dev->bus, dma_base, size);
if (IS_ERR(mapping)) {
pr_warn("Failed to create %llu-byte IOMMU mapping for device %s\n",