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-rw-r--r--drivers/pci/Kconfig22
-rw-r--r--drivers/pci/controller/dwc/pci-imx6.c11
-rw-r--r--drivers/pci/controller/dwc/pcie-armada8k.c16
-rw-r--r--drivers/pci/msi.c22
-rw-r--r--drivers/pci/pci.c3
5 files changed, 30 insertions, 44 deletions
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 4310c7a4212e..2ab92409210a 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -21,13 +21,14 @@ menuconfig PCI
support for PCI-X and the foundations for PCI Express support.
Say 'Y' here unless you know what you are doing.
+if PCI
+
config PCI_DOMAINS
bool
depends on PCI
config PCI_DOMAINS_GENERIC
bool
- depends on PCI
select PCI_DOMAINS
config PCI_SYSCALL
@@ -37,7 +38,6 @@ source "drivers/pci/pcie/Kconfig"
config PCI_MSI
bool "Message Signaled Interrupts (MSI and MSI-X)"
- depends on PCI
select GENERIC_MSI_IRQ
help
This allows device drivers to enable MSI (Message Signaled
@@ -59,7 +59,6 @@ config PCI_MSI_IRQ_DOMAIN
config PCI_QUIRKS
default y
bool "Enable PCI quirk workarounds" if EXPERT
- depends on PCI
help
This enables workarounds for various PCI chipset bugs/quirks.
Disable this only if your target machine is unaffected by PCI
@@ -67,7 +66,7 @@ config PCI_QUIRKS
config PCI_DEBUG
bool "PCI Debugging"
- depends on PCI && DEBUG_KERNEL
+ depends on DEBUG_KERNEL
help
Say Y here if you want the PCI core to produce a bunch of debug
messages to the system log. Select this if you are having a
@@ -77,7 +76,6 @@ config PCI_DEBUG
config PCI_REALLOC_ENABLE_AUTO
bool "Enable PCI resource re-allocation detection"
- depends on PCI
depends on PCI_IOV
help
Say Y here if you want the PCI core to detect if PCI resource
@@ -90,7 +88,6 @@ config PCI_REALLOC_ENABLE_AUTO
config PCI_STUB
tristate "PCI Stub driver"
- depends on PCI
help
Say Y or M here if you want be able to reserve a PCI device
when it is going to be assigned to a guest operating system.
@@ -99,7 +96,6 @@ config PCI_STUB
config PCI_PF_STUB
tristate "PCI PF Stub driver"
- depends on PCI
depends on PCI_IOV
help
Say Y or M here if you want to enable support for devices that
@@ -111,7 +107,7 @@ config PCI_PF_STUB
config XEN_PCIDEV_FRONTEND
tristate "Xen PCI Frontend"
- depends on PCI && X86 && XEN
+ depends on X86 && XEN
select PCI_XEN
select XEN_XENBUS_FRONTEND
default y
@@ -133,7 +129,6 @@ config PCI_BRIDGE_EMUL
config PCI_IOV
bool "PCI IOV support"
- depends on PCI
select PCI_ATS
help
I/O Virtualization is a PCI feature supported by some devices
@@ -144,7 +139,6 @@ config PCI_IOV
config PCI_PRI
bool "PCI PRI support"
- depends on PCI
select PCI_ATS
help
PRI is the PCI Page Request Interface. It allows PCI devices that are
@@ -154,7 +148,6 @@ config PCI_PRI
config PCI_PASID
bool "PCI PASID support"
- depends on PCI
select PCI_ATS
help
Process Address Space Identifiers (PASIDs) can be used by PCI devices
@@ -167,7 +160,7 @@ config PCI_PASID
config PCI_P2PDMA
bool "PCI peer-to-peer transfer support"
- depends on PCI && ZONE_DEVICE
+ depends on ZONE_DEVICE
select GENERIC_ALLOCATOR
help
Enableѕ drivers to do PCI peer-to-peer transactions to and from
@@ -184,12 +177,11 @@ config PCI_P2PDMA
config PCI_LABEL
def_bool y if (DMI || ACPI)
- depends on PCI
select NLS
config PCI_HYPERV
tristate "Hyper-V PCI Frontend"
- depends on PCI && X86 && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN && X86_64
+ depends on X86 && HYPERV && PCI_MSI && PCI_MSI_IRQ_DOMAIN && X86_64
help
The PCI device frontend driver allows the kernel to import arbitrary
PCI devices from a PCI backend to support PCI driver domains.
@@ -198,3 +190,5 @@ source "drivers/pci/hotplug/Kconfig"
source "drivers/pci/controller/Kconfig"
source "drivers/pci/endpoint/Kconfig"
source "drivers/pci/switch/Kconfig"
+
+endif
diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 52e47dac028f..80f843030e36 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -310,6 +310,9 @@ static int imx6_pcie_attach_pd(struct device *dev)
imx6_pcie->pd_pcie = dev_pm_domain_attach_by_name(dev, "pcie");
if (IS_ERR(imx6_pcie->pd_pcie))
return PTR_ERR(imx6_pcie->pd_pcie);
+ /* Do nothing when power domain missing */
+ if (!imx6_pcie->pd_pcie)
+ return 0;
link = device_link_add(dev, imx6_pcie->pd_pcie,
DL_FLAG_STATELESS |
DL_FLAG_PM_RUNTIME |
@@ -323,13 +326,13 @@ static int imx6_pcie_attach_pd(struct device *dev)
if (IS_ERR(imx6_pcie->pd_pcie_phy))
return PTR_ERR(imx6_pcie->pd_pcie_phy);
- device_link_add(dev, imx6_pcie->pd_pcie_phy,
+ link = device_link_add(dev, imx6_pcie->pd_pcie_phy,
DL_FLAG_STATELESS |
DL_FLAG_PM_RUNTIME |
DL_FLAG_RPM_ACTIVE);
- if (IS_ERR(link)) {
- dev_err(dev, "Failed to add device_link to pcie_phy pd: %ld\n", PTR_ERR(link));
- return PTR_ERR(link);
+ if (!link) {
+ dev_err(dev, "Failed to add device_link to pcie_phy pd.\n");
+ return -EINVAL;
}
return 0;
diff --git a/drivers/pci/controller/dwc/pcie-armada8k.c b/drivers/pci/controller/dwc/pcie-armada8k.c
index b171b6bc15c8..0c389a30ef5d 100644
--- a/drivers/pci/controller/dwc/pcie-armada8k.c
+++ b/drivers/pci/controller/dwc/pcie-armada8k.c
@@ -22,7 +22,6 @@
#include <linux/resource.h>
#include <linux/of_pci.h>
#include <linux/of_irq.h>
-#include <linux/gpio/consumer.h>
#include "pcie-designware.h"
@@ -30,7 +29,6 @@ struct armada8k_pcie {
struct dw_pcie *pci;
struct clk *clk;
struct clk *clk_reg;
- struct gpio_desc *reset_gpio;
};
#define PCIE_VENDOR_REGS_OFFSET 0x8000
@@ -139,12 +137,6 @@ static int armada8k_pcie_host_init(struct pcie_port *pp)
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct armada8k_pcie *pcie = to_armada8k_pcie(pci);
- if (pcie->reset_gpio) {
- /* assert and then deassert the reset signal */
- gpiod_set_value_cansleep(pcie->reset_gpio, 1);
- msleep(100);
- gpiod_set_value_cansleep(pcie->reset_gpio, 0);
- }
dw_pcie_setup_rc(pp);
armada8k_pcie_establish_link(pcie);
@@ -257,14 +249,6 @@ static int armada8k_pcie_probe(struct platform_device *pdev)
goto fail_clkreg;
}
- /* Get reset gpio signal and hold asserted (logically high) */
- pcie->reset_gpio = devm_gpiod_get_optional(dev, "reset",
- GPIOD_OUT_HIGH);
- if (IS_ERR(pcie->reset_gpio)) {
- ret = PTR_ERR(pcie->reset_gpio);
- goto fail_clkreg;
- }
-
platform_set_drvdata(pdev, pcie);
ret = armada8k_add_pcie_port(pcie, pdev);
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 7a1c8a09efa5..4c0b47867258 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -1168,7 +1168,8 @@ int pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs,
const struct irq_affinity *affd)
{
static const struct irq_affinity msi_default_affd;
- int vecs = -ENOSPC;
+ int msix_vecs = -ENOSPC;
+ int msi_vecs = -ENOSPC;
if (flags & PCI_IRQ_AFFINITY) {
if (!affd)
@@ -1179,16 +1180,17 @@ int pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs,
}
if (flags & PCI_IRQ_MSIX) {
- vecs = __pci_enable_msix_range(dev, NULL, min_vecs, max_vecs,
- affd);
- if (vecs > 0)
- return vecs;
+ msix_vecs = __pci_enable_msix_range(dev, NULL, min_vecs,
+ max_vecs, affd);
+ if (msix_vecs > 0)
+ return msix_vecs;
}
if (flags & PCI_IRQ_MSI) {
- vecs = __pci_enable_msi_range(dev, min_vecs, max_vecs, affd);
- if (vecs > 0)
- return vecs;
+ msi_vecs = __pci_enable_msi_range(dev, min_vecs, max_vecs,
+ affd);
+ if (msi_vecs > 0)
+ return msi_vecs;
}
/* use legacy irq if allowed */
@@ -1199,7 +1201,9 @@ int pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs,
}
}
- return vecs;
+ if (msix_vecs == -ENOSPC)
+ return -ENOSPC;
+ return msi_vecs;
}
EXPORT_SYMBOL(pci_alloc_irq_vectors_affinity);
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index c9d8e3c837de..c25acace7d91 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -6195,7 +6195,8 @@ static int __init pci_setup(char *str)
} else if (!strncmp(str, "pcie_scan_all", 13)) {
pci_add_flags(PCI_SCAN_ALL_PCIE_DEVS);
} else if (!strncmp(str, "disable_acs_redir=", 18)) {
- disable_acs_redir_param = str + 18;
+ disable_acs_redir_param =
+ kstrdup(str + 18, GFP_KERNEL);
} else {
printk(KERN_ERR "PCI: Unknown option `%s'\n",
str);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-05 00:46:53 +0000