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twx-linux/arch/s390/include/asm
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Farhan Ali b45873c3f0 s390/pci: Restore IRQ unconditionally for the zPCI device 
Commit c1e18c17bda6 ("s390/pci: add zpci_set_irq()/zpci_clear_irq()"),
introduced the zpci_set_irq() and zpci_clear_irq(), to be used while
resetting a zPCI device.

Commit da995d538d3a ("s390/pci: implement reset_slot for hotplug
slot"), mentions zpci_clear_irq() being called in the path for
zpci_hot_reset_device().  But that is not the case anymore and these
functions are not called outside of this file. Instead
zpci_hot_reset_device() relies on zpci_disable_device() also clearing
the IRQs, but misses to reset the zdev->irqs_registered flag.

However after a CLP disable/enable reset, the device's IRQ are
unregistered, but the flag zdev->irq_registered does not get cleared. It
creates an inconsistent state and so arch_restore_msi_irqs() doesn't
correctly restore the device's IRQ. This becomes a problem when a PCI
driver tries to restore the state of the device through
pci_restore_state(). Restore IRQ unconditionally for the device and remove
the irq_registered flag as its redundant.

Fixes: c1e18c17bda6 ("s390/pci: add zpci_set_irq()/zpci_clear_irq()")
Cc: stable@vger.kernnel.org
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Farhan Ali <alifm@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2025-10-24 15:25:43 +02:00
..
trace s390/hiperdispatch: Add trace events 2024-08-29 22:56:35 +02:00
vdso s390/time: Remove in-kernel time steering 2025-07-21 12:41:55 +02:00
abs_lowcore.h s390/lowcore: Convert relocated lowcore alternative to machine feature 2025-03-04 17:18:05 +01:00
access-regs.h
airq.h
alternative.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
ap.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
appldata.h s390: Convert MACHINE_IS_[LPAR|VM|KVM], etc, machine_is_[lpar|vm|kvm]() 2025-03-04 17:18:07 +01:00
arch_hweight.h s390: Use MARCH_HAS_*_FEATURES defines 2024-09-07 17:12:42 +02:00
archrandom.h
asce.h s390/mm: Reimplement lazy ASCE handling 2025-04-14 11:23:21 +02:00
asm-const.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
asm-extable.h s390/uaccess: Shorten raw_copy_from_user() / raw_copy_to_user() inline assemblies 2025-03-04 17:18:03 +01:00
asm-prototypes.h s390/expoline: Make modules use kernel expolines 2024-04-17 13:38:03 +02:00
asm.h s390: Rename GCC_ASM_FLAG_OUTPUT_BROKEN to CC_ASM_FLAG_OUTPUT_BROKEN 2025-01-26 17:24:04 +01:00
atomic_ops.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
atomic.h s390/atomic: Provide arch_atomic_*_and_test() implementations 2024-12-15 16:19:03 +01:00
barrier.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
bitops.h more s390 updates for 6.18 merge window 2025-10-09 10:51:43 -07:00
boot_data.h s390/boot: Add timestamps to early boot messages 2025-01-26 17:24:02 +01:00
bug.h
cache.h
ccwdev.h driver core: have match() callback in struct bus_type take a const * 2024-07-03 15:16:54 +02:00
ccwgroup.h
checksum.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
chpid.h
chsc.h s390/chsc: use notifier for AP configuration changes 2024-04-09 17:29:55 +02:00
cio.h s390/virtio_ccw: use DMA handle from DMA API 2024-03-13 09:23:46 +01:00
clocksource.h
clp.h
cmb.h
cmpxchg.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
compat.h
cpacf.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
cpcmd.h
cpu_mf-insn.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
cpu_mf.h s390: Use inline qualifier for all EX_TABLE and ALTERNATIVE inline assemblies 2025-03-18 17:13:51 +01:00
cpu.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
cpufeature.h watchdog: diag288_wdt: Implement module autoload 2025-04-16 09:26:49 +02:00
cputime.h
crw.h
css_chars.h s390/qdio: Rename feature flag aif_osa to aif_qdio 2025-01-03 11:00:53 +01:00
ctlreg.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
current.h s390/current: Implement current with inline assembly 2025-03-18 17:13:04 +01:00
dat-bits.h s390/kvm: Move bitfields for dat tables 2024-07-10 19:50:45 +02:00
debug.h s390/pci: Add pci_msg debug view to PCI report 2024-12-16 16:14:27 +01:00
delay.h
diag288.h watchdog: diag288_wdt: Implement module autoload 2025-04-16 09:26:49 +02:00
diag.h s390: Use inline qualifier for all EX_TABLE and ALTERNATIVE inline assemblies 2025-03-18 17:13:51 +01:00
dis.h
dma-types.h s390/mm: provide simple ARCH_HAS_DEBUG_VIRTUAL support 2024-03-13 09:23:49 +01:00
dma.h
dwarf.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
eadm.h s390/cio: use bitwise types to allow for type checking 2024-03-13 09:23:46 +01:00
ebcdic.h s390/ebcdic: Fix length decrement in codepage_convert() 2025-01-13 09:50:18 +01:00
elf.h s390: Remove 2k vs 4k page table leftovers 2025-03-18 17:13:05 +01:00
entry-common.h KVM: s390: Rework guest entry logic 2025-07-21 13:01:03 +00:00
exec.h
extable.h
extmem.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
facility.h s390/facilities: Fix warning about shadow of global variable 2024-10-10 15:32:43 +02:00
fault.h
fcx.h s390/cio: use bitwise types to allow for type checking 2024-03-13 09:23:46 +01:00
fprobe.h fprobe: Add fprobe_header encoding feature 2024-12-26 10:50:05 -05:00
fpu-insn-asm.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
fpu-insn.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
fpu-types.h s390/checksum: provide vector register variant of csum_partial() 2024-02-16 14:30:17 +01:00
fpu.h s390/vx: Convert cpu_has_vx() to cpu feature function 2025-03-04 17:18:07 +01:00
ftrace.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
ftrace.lds.h
futex.h s390/mm: Reimplement lazy ASCE handling 2025-04-14 11:23:21 +02:00
gmap_helpers.h KVM: s390: Refactor and split some gmap helpers 2025-05-28 17:48:04 +02:00
gmap.h KVM: s390: Refactor and split some gmap helpers 2025-05-28 17:48:04 +02:00
hardirq.h s390: Replace S390_lowcore by get_lowcore() 2024-06-18 17:01:33 +02:00
hiperdispatch.h s390/hiperdispatch: Introduce hiperdispatch 2024-08-29 22:56:35 +02:00
hugetlb.h mm: introduce memdesc_flags_t 2025-09-13 16:55:07 -07:00
hw_irq.h
idals.h s390/cio,idal: fix virtual vs physical address confusion 2024-03-13 09:23:47 +01:00
idle.h
io.h - The 6 patch series "Enable strict percpu address space checks" from 2025-04-01 09:29:18 -07:00
ipl.h
irq_work.h
irq.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
irqflags.h s390/irqflags: do not instrument arch_local_irq_*() with KMSAN 2024-07-03 19:30:25 -07:00
isc.h
itcw.h
jump_label.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
kasan.h
Kbuild arch, mm: move definition of node_data to generic code 2024-09-03 21:15:28 -07:00
kdebug.h
kexec.h s390/kdump: Provide is_kdump_kernel() implementation 2024-10-25 16:03:23 +02:00
kfence.h s390/kfence: Split kfence pool into 4k mappings in arch_kfence_init_pool() 2025-03-18 17:13:05 +01:00
kmsan.h s390/kmsan: Fix merge conflict with get_lowcore() introduction 2024-07-23 16:01:51 +02:00
kprobes.h
kvm_host_types.h s390/kvm: Split kvm_host header file 2025-03-31 12:20:39 +02:00
kvm_host.h KVM: s390/vfio-ap: Use kvm_is_gpa_in_memslot() instead of open coded equivalent 2025-09-30 13:38:06 -04:00
kvm_para.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
linkage.h
lowcore.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
maccess.h
machine.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
march.h s390: Allow to compile with z17 optimizations 2025-04-09 12:12:41 +02:00
mem_encrypt.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
mmu_context.h s390/mm: Select ARCH_WANT_IRQS_OFF_ACTIVATE_MM 2025-04-14 11:23:21 +02:00
mmu.h s390: Remove 2k vs 4k page table leftovers 2025-03-18 17:13:05 +01:00
module.h s390/module: Provide find_section() helper 2024-09-13 17:28:36 +02:00
msi.h
nmi.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
nospec-branch.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
nospec-insn.h s390: Explicitly include <linux/export.h> 2025-06-17 18:18:02 +02:00
numa.h
os_info.h s390/os_info: Fix array size in struct os_info 2024-04-29 17:33:29 +02:00
page-states.h s390: Remove __bootdata annotations from declarations 2024-12-15 16:19:04 +01:00
page.h Merge branch 'uaccess-key' into features 2025-06-29 13:21:16 +02:00
pai.h s390/pai: Convert to use flag output macros 2024-11-13 14:31:32 +01:00
pci_clp.h s390/pci: check for relaxed translation capability 2025-02-21 12:01:57 +01:00
pci_debug.h
pci_dma.h iommu/s390: allow larger region tables 2025-04-17 16:43:12 +02:00
pci_insn.h iommu/s390: Make attach succeed when the device was surprise removed 2025-09-05 15:11:09 +02:00
pci_io.h s390/pci: Align prototypes of zpci IO memcpy functions 2024-10-16 11:33:06 +02:00
pci.h s390/pci: Restore IRQ unconditionally for the zPCI device 2025-10-24 15:25:43 +02:00
percpu.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
perf_event.h Performance events changes for v6.13: 2024-11-19 13:34:06 -08:00
pfault.h
pgalloc.h s390/mm: Add memory allocation profiling hooks 2025-09-25 14:28:58 +02:00
pgtable.h KVM: s390: A bugfix and a performance improvement 2025-09-30 13:09:20 -04:00
physmem_info.h s390/boot: Add physmem tracking debug support 2025-01-26 17:24:02 +01:00
pkey.h s390/pkey/crypto: Introduce xflags param for pkey in-kernel API 2025-04-30 11:34:03 +02:00
pnet.h
preempt.h s390/preempt: Optimize __preempt_count_dec_and_test() 2024-12-15 16:19:03 +01:00
processor.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
ptrace.h s390 updates for 6.17 merge window 2025-07-29 20:17:08 -07:00
purgatory.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
qdio.h s390/cio: use bitwise types to allow for type checking 2024-03-13 09:23:46 +01:00
runtime_instr.h
runtime-const.h s390: Add runtime constant support 2024-07-23 15:54:58 +02:00
rwonce.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
schid.h
sclp.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
scsw.h s390/cio: use bitwise types to allow for type checking 2024-03-13 09:23:46 +01:00
seccomp.h
sections.h
set_memory.h - The series "zram: optimal post-processing target selection" from 2024-11-23 09:58:07 -08:00
setup.h s390/nmi: Print additional information 2025-06-26 15:30:51 +02:00
signal.h
sigp.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
skey.h s390/skey: Provide infrastructure for executing with non-default access key 2025-06-29 13:12:02 +02:00
smp.h s390/smp: Implement raw_smp_processor_id() with inline assembly 2025-03-18 17:13:04 +01:00
softirq_stack.h s390: Replace S390_lowcore by get_lowcore() 2024-06-18 17:01:33 +02:00
sparsemem.h s390/sparsemem: Provide phys_to_target_node() with CONFIG_NUMA 2024-11-07 10:33:44 +01:00
spinlock_types.h Improve consistency of '#error' directive messages 2024-11-11 17:17:04 -08:00
spinlock.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
stacktrace.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
stp.h s390/time: Add PtP driver 2024-10-30 17:02:39 -07:00
string.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
syscall_wrapper.h
syscall.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
sysinfo.h s390/sysinfo: Move stsi() to header file 2025-03-04 17:18:07 +01:00
text-patching.h
thread_info.h s390/entry: Remove unused TIF flags 2025-09-17 08:14:04 +02:00
timex.h s390: Remove superfluous newlines from inline assemblies 2025-09-29 13:52:08 +02:00
tlb.h Generic: 2025-06-02 12:24:58 -07:00
tlbflush.h s390/tlb: Convert MACHINE_HAS_TLB_GUEST to machine_has_tlb_guest() 2025-03-04 17:18:06 +01:00
topology.h s390/smp: Add support for HOTPLUG_SMT 2025-03-31 12:20:39 +02:00
tpi.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
types.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
uaccess.h s390/uaccess: Make cmpxchg_user_key() library code 2025-06-29 13:12:01 +02:00
unistd.h clone3: drop __ARCH_WANT_SYS_CLONE3 macro 2024-07-10 14:23:38 +02:00
unwind.h
uprobes.h
user.h
uv.h Generic: 2025-06-02 12:24:58 -07:00
vdso-symbols.h s390/vdso: Move vdso symbol handling to separate header file 2024-09-13 17:28:36 +02:00
vdso.h s390: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers 2025-06-16 16:23:02 +02:00
vmalloc.h
vmlinux.lds.h
vtime.h s390/vtime: Remove duplicate get_lowcore() calls 2024-06-18 17:01:33 +02:00
vtimer.h
word-at-a-time.h s390: Use inline qualifier for all EX_TABLE and ALTERNATIVE inline assemblies 2025-03-18 17:13:51 +01:00
xor.h