Niklas Cassel 794a8604fe PCI: dwc: Fix dw_pcie_ops NULL pointer dereference ... Fix a crash from dereferencing a NULL dw_pcie_ops pointer. For example, on ARTPEC-6: Unable to handle kernel NULL pointer dereference at virtual address 00000004 pgd = c0204000 [00000004] *pgd=00000000 Internal error: Oops: 5 [#1] SMP ARM Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.11.0-rc3-next-20170321 #1 Hardware name: Axis ARTPEC-6 Platform task: db098000 task.stack: db096000 PC is at dw_pcie_writel_dbi+0x2c/0xd0 Prior to 442ec4c04d ("PCI: dwc: all: Split struct pcie_port into host-only and core structures"), every driver had a struct pcie_host_ops with function pointers, typically used as: if (pp->ops->readl_rc) return pp->ops->readl_rc(...); 442ec4c04d split struct pcie_host_ops into two pieces: struct dw_pcie_host_ops and struct dw_pcie_ops, so the above became: if (pci->ops->readl_dbi) return pci->ops->readl_dbi(...); But pcie-artpec6.c and pcie-designware-plat.c don't need the dw_pcie_ops pointers and didn't supply a pci->ops struct, which leads to NULL pointer dereferences. Supply an empty struct dw_pcie_ops to avoid the NULL pointer dereferences. [bhelgaas: changelog] Fixes: 442ec4c04d ("PCI: dwc: all: Split struct pcie_port into host-only and core structures") Signed-off-by: Niklas Cassel <niklas.cassel@axis.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Kishon Vijay Abraham I <kishon@ti.com> Acked-by: Joao Pinto <jpinto@synopsys.com>		2017-04-04 08:24:25 -05:00
..
dwc	PCI: dwc: Fix dw_pcie_ops NULL pointer dereference	2017-04-04 08:24:25 -05:00
host	PCI: thunder-pem: Fix legacy firmware PEM-specific resources	2017-04-03 15:10:21 -05:00
hotplug	sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>	2017-03-02 08:42:32 +01:00
pcie	PCI/ASPM: Always set link->downstream to avoid NULL dereference on remove	2017-03-07 14:23:30 -06:00
access.c	sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>	2017-03-02 08:42:32 +01:00
ats.c
bus.c
ecam.c
host-bridge.c
hotplug-pci.c
htirq.c
iov.c
irq.c
Kconfig
Makefile	PCI: dwc: Remove dependency of designware on CONFIG_PCI	2017-02-21 15:00:26 -06:00
msi.c	PCI: add an API to get node from vector	2017-03-02 08:56:04 -07:00
of.c
pci-acpi.c
pci-driver.c	pci-v4.11-changes	2017-02-23 11:53:22 -08:00
pci-label.c
pci-mid.c
pci-stub.c
pci-sysfs.c
pci.c
pci.h
probe.c	pci-v4.11-changes	2017-02-23 11:53:22 -08:00
proc.c
quirks.c	PCI: Prevent VPD access for QLogic ISP2722	2017-03-07 14:16:57 -06:00
remove.c
rom.c
search.c
setup-bus.c
setup-irq.c
setup-res.c
slot.c
syscall.c
vc.c
vpd.c
xen-pcifront.c