Andrew Donnellan dc9c41bd9e Revert "powerpc/eeh: Don't unfreeze PHB PE after reset" ... This reverts commit 527d10ef3a. The reverted commit breaks cxlflash devices following an EEH reset (and possibly other cxl devices, however this has not been tested). The reverted commit changed the behaviour of eeh_reset_device() so that PHB PEs are not unfrozen following the completion of the reset. This should not be problematic, as no device resources should have been associated with the PHB PE. However, when attempting to load the cxlflash driver after a reset, the driver attempts to read Vital Product Data through a call to pci_read_vpd() (which is called on the physical cxl device, not on the virtual AFU device). pci_read_vpd() in turn attempts to read from the cxl device's config space. This fails, as the PE it's trying to read from is still frozen. In turn, the driver gets an -ENODEV and fails to initialise. It appears this issue only affects some parts of the VPD area, as "lspci -vvv", which only reads a subset of the VPD bytes, is not broken by the original patch. At this stage, we don't fully understand why we're trying to read a frozen PE, and we don't know how this affects other cxl devices. It is possible that there is an underlying bug in the cxl driver or the powerpc CAPI support code, or alternatively a bug in the PCI resource allocation/mapping code that is incorrectly mapping resources to PE#0. As such, this fix is incomplete, however it is necessary to prevent a serious regression in CAPI support. In the meantime, revert the commit, especially as it was intended to be a non-functional change. Cc: Gavin Shan <gwshan@linux.vnet.ibm.com> Cc: Ian Munsie <imunsie@au1.ibm.com> Cc: Daniel Axtens <dja@axtens.net> Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2015-12-09 14:05:10 +11:00
..
vdso32	powerpc/vdso: Avoid link stack corruption in __get_datapage()	2015-10-01 16:52:02 +10:00
vdso64	powerpc/vdso: Avoid link stack corruption in __get_datapage()	2015-10-01 16:52:02 +10:00
.gitignore
align.c
asm-offsets.c	ARM:	2015-09-10 16:42:49 -07:00
audit.c
btext.c
cacheinfo.c	powerpc: Fix missing L2 cache size in /sys/devices/system/cpu	2015-04-11 20:49:28 +10:00
cacheinfo.h
compat_audit.c
cpu_setup_6xx.S
cpu_setup_44x.S
cpu_setup_fsl_booke.S
cpu_setup_pa6t.S
cpu_setup_power.S	powerpc/book3s: Fix flush_tlb cpu_spec hook to take a generic argument.	2015-03-17 07:52:48 +11:00
cpu_setup_ppc970.S
cputable.c	powerpc/tm: Abort syscalls in active transactions	2015-06-19 17:10:28 +10:00
crash_dump.c
crash.c	powerpc/book3e/kdump: Enable crash_kexec_wait_realmode	2015-10-27 18:13:27 -05:00
dbell.c	powerpc/powernv: Fixes for hypervisor doorbell handling	2015-03-20 14:51:53 +11:00
dma-iommu.c	powerpc/iommu: Support "hybrid" iommu/direct DMA ops for coherent_mask < dma_mask	2015-07-13 10:10:55 +10:00
dma-swiotlb.c	powerpc/iommu: Support "hybrid" iommu/direct DMA ops for coherent_mask < dma_mask	2015-07-13 10:10:55 +10:00
dma.c	powerpc/dma: dma_set_coherent_mask() should not be GPL only	2015-10-28 14:20:50 +09:00
eeh_cache.c	powerpc/eeh: fix start/end/flags type in struct pci_io_addr_range{}	2015-05-13 14:00:07 +10:00
eeh_dev.c	powerpc/eeh: Create eeh_dev from pci_dn instead of device_node	2015-03-24 13:15:51 +11:00
eeh_driver.c	Revert "powerpc/eeh: Don't unfreeze PHB PE after reset"	2015-12-09 14:05:10 +11:00
eeh_event.c
eeh_pe.c	powerpc/eeh: Disable automatically blocked PCI config	2015-08-18 19:34:42 +10:00
eeh_sysfs.c
eeh.c	powerpc/eeh: More relaxed condition for enabled IO path	2015-10-21 20:41:43 +11:00
entry_32.S	powerpc/kernel: Change the do_syscall_trace_enter() API	2015-07-29 11:56:11 +10:00
entry_64.S	powerpc/kernel: Change the do_syscall_trace_enter() API	2015-07-29 11:56:11 +10:00
epapr_hcalls.S
epapr_paravirt.c
exceptions-64e.S	powerpc/book3e: support CONFIG_RELOCATABLE	2015-10-27 18:13:27 -05:00
exceptions-64s.S	powerpc: Non relocatable system call doesn't need a trampoline	2015-06-02 13:26:47 +10:00
fadump.c
firmware.c
fpu.S
fsl_booke_entry_mapping.S	powerpc/fsl: Force coherent memory on e500mc derivatives	2015-08-07 23:00:01 -05:00
ftrace.c	powerpc updates for 3.19	2014-12-11 17:48:14 -08:00
head_8xx.S	powerpc/8xx: Implementation of PAGE_EXEC	2015-06-02 21:37:28 -05:00
head_32.S
head_40x.S
head_44x.S
head_64.S	powerpc/book3e: support CONFIG_RELOCATABLE	2015-10-27 18:13:27 -05:00
head_booke.h
head_fsl_booke.S
hw_breakpoint.c
ibmebus.c
idle_6xx.S
idle_book3e.S
idle_e500.S	powerpc/e500mc: Remove dead L2 flushing code in idle_e500.S	2015-06-02 21:37:19 -05:00
idle_power4.S
idle_power7.S	powerpc/powernv: Fix race in updating core_idle_state	2015-07-07 10:16:52 +10:00
idle.c
io-workarounds.c	powerpc/mm: Differentiate between hugetlb and THP during page walk	2015-10-12 15:30:09 +11:00
io.c
iomap.c
iommu.c	powerpc/iommu/powernv: Release replaced TCE	2015-06-11 15:16:49 +10:00
irq.c	powerpc, irq: Use access helper irq_data_get_affinity_mask()	2015-09-15 17:06:28 +02:00
isa-bridge.c
jump_label.c	jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP}	2015-08-03 11:34:12 +02:00
kgdb.c
kprobes.c
kvm_emul.S
kvm.c	powerpc: Remove redundant breaks	2015-08-06 15:10:20 +10:00
l2cr_6xx.S
legacy_serial.c
machine_kexec_32.c
machine_kexec_64.c	powerpc/book3e-64: Enable kexec	2015-10-27 18:13:30 -05:00
machine_kexec.c
Makefile	powerpc/ftrace: add powerpc timebase as a trace clock source	2015-08-06 16:36:23 +10:00
mce_power.c	powerpc/book3s: Fix flush_tlb cpu_spec hook to take a generic argument.	2015-03-17 07:52:48 +11:00
mce.c	powerpc/mce: fix off by one errors in mce event handling	2015-05-12 19:44:01 +10:00
misc_32.S	atomic: Collapse all atomic_{set,clear}_mask definitions	2015-07-27 14:06:24 +02:00
misc_64.S	powerpc/book3e-64: Enable kexec	2015-10-27 18:13:30 -05:00
misc.S
module_32.c
module_64.c
module.c
msi.c	powerpc: Remove MSI-related PCI controller ops from ppc_md	2015-06-02 11:47:45 +10:00
nvram_64.c	powerpc/nvram: Fix function name in some errors messages.	2015-10-02 22:55:05 +10:00
of_platform.c	powerpc/eeh: Do probe on pci_dn	2015-03-24 13:15:52 +11:00
paca.c	powerpc/book3e-64: Don't limit paca to 256 MiB	2015-10-27 18:13:28 -05:00
pci_32.c
pci_64.c	powerpc updates for 3.19	2014-12-11 17:48:14 -08:00
pci_dn.c	powerpc/powernv: Shift VF resource with an offset	2015-03-31 13:02:38 +11:00
pci_of_scan.c	libnvdimm for 4.3:	2015-09-08 14:35:59 -07:00
pci-common.c	powerpc/pci: export pcibios_free_controller()	2015-10-15 20:31:57 +11:00
pci-hotplug.c	powerpc/pci: Add release_device() hook to phb ops	2015-06-03 13:27:15 +10:00
pmc.c
ppc32.h
ppc_ksyms_32.c
ppc_ksyms.c
ppc_save_regs.S
proc_powerpc.c
process.c	powerpc/tm: Check for already reclaimed tasks	2015-11-23 20:18:03 +11:00
prom_init_check.sh
prom_init.c	vTPM: get the buffer allocated for event log instead of the actual log	2015-10-19 01:01:23 +02:00
prom_parse.c
prom.c	powerpc/prom: Use of_get_next_parent() in of_get_ibm_chip_id()	2015-10-28 12:08:32 +09:00
ptrace32.c
ptrace.c	powerpc/kernel: Enable seccomp filter	2015-07-30 14:34:44 +10:00
reloc_32.S
reloc_64.S
rtas_flash.c
rtas_pci.c	powerpc: move find_and_init_phbs() to pSeries specific code	2015-04-11 20:49:09 +10:00
rtas-proc.c
rtas-rtc.c
rtas.c	powerpc/rtas: Validate rtas.entry before calling enter_rtas()	2015-10-22 11:03:25 +11:00
rtasd.c
setup_32.c	powerpc32: memset: only use dcbz once cache is enabled	2015-09-17 10:36:53 +10:00
setup_64.c	powerpc/book3e-64/kexec: Enable SMP release	2015-10-27 18:13:29 -05:00
setup-common.c
signal_32.c	powerpc/tm: Block signal return setting invalid MSR state	2015-11-23 20:06:31 +11:00
signal_64.c	powerpc/tm: Block signal return setting invalid MSR state	2015-11-23 20:06:31 +11:00
signal.c
signal.h
smp-tbsync.c
smp.c	powerpc/smp: Wait until secondaries are active & online	2015-03-04 13:19:33 +11:00
stacktrace.c
suspend.c
swsusp_32.S
swsusp_64.c
swsusp_asm64.S
swsusp_booke.S
swsusp.c
sys_ppc32.c
syscalls.c	powerpc: Add a proper syscall for switching endianness	2015-03-28 22:03:40 +11:00
sysfs.c	powerpc/dscr: Add some in-code documentation	2015-06-07 19:29:15 +10:00
systbl_chk.c	powerpc: Add a proper syscall for switching endianness	2015-03-28 22:03:40 +11:00
systbl_chk.sh
systbl.S	powerpc: Add a proper syscall for switching endianness	2015-03-28 22:03:40 +11:00
tau_6xx.c
time.c	powerpc/time: Migrate to new 'set-state' interface	2015-08-10 11:41:02 +02:00
tm.S	powerpc/kernel: Rename PACA_DSCR to PACA_DSCR_DEFAULT	2015-06-07 19:29:00 +10:00
trace_clock.c	powerpc/ftrace: add powerpc timebase as a trace clock source	2015-08-06 16:36:23 +10:00
traps.c	powerpc: Set the correct kernel taint on machine check errors.	2015-07-06 20:24:35 +10:00
udbg_16550.c
udbg.c	powerpc: Remove the celleb support	2015-04-07 17:15:13 +10:00
uprobes.c
vdso.c	powerpc/vdso: Disable building the 32-bit VDSO on little endian	2015-05-11 20:01:02 +10:00
vecemu.c
vector.S	powerpc: Change vrX register defines to vX to match gcc and glibc	2015-03-16 18:32:11 +11:00
vio.c	powerpc: use for_each_sg()	2015-06-24 17:49:38 -07:00
vmlinux.lds.S	powerpc: discard .exit.data at runtime	2015-10-15 20:31:59 +11:00