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2022-09-26powerpc/pseries: move hcall_tracepoint_refcount out of .tocNicholas Piggin1-2/+2
The .toc section is not really intended for arbitrary data. Writable data in particular prevents making the TOC read-only after relocation. Move hcall_tracepoint_refcount into the .data section. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220926053823.2668799-1-npiggin@gmail.com
2022-09-25Merge 7e2cd21e02b3 ("Merge tag 'tty-6.0-rc7' of ↵Greg Kroah-Hartman2-3/+4
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty") into tty-next We need the tty fixes and api additions in this branch. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-23Merge branch 'fixes' into nextMichael Ellerman7-70/+91
Merge our fixes branch to bring in a few things that new feature patches rely on or conflict with.
2022-09-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski2-3/+4
drivers/net/ethernet/freescale/fec.h 7b15515fc1ca ("Revert "fec: Restart PPS after link state change"") 40c79ce13b03 ("net: fec: add stop mode support for imx8 platform") https://lore.kernel.org/all/20220921105337.62b41047@canb.auug.org.au/ drivers/pinctrl/pinctrl-ocelot.c c297561bc98a ("pinctrl: ocelot: Fix interrupt controller") 181f604b33cd ("pinctrl: ocelot: add ability to be used in a non-mmio configuration") https://lore.kernel.org/all/20220921110032.7cd28114@canb.auug.org.au/ tools/testing/selftests/drivers/net/bonding/Makefile bbb774d921e2 ("net: Add tests for bonding and team address list management") 152e8ec77640 ("selftests/bonding: add a test for bonding lladdr target") https://lore.kernel.org/all/20220921110437.5b7dbd82@canb.auug.org.au/ drivers/net/can/usb/gs_usb.c 5440428b3da6 ("can: gs_usb: gs_can_open(): fix race dev->can.state condition") 45dfa45f52e6 ("can: gs_usb: add RX and TX hardware timestamp support") https://lore.kernel.org/all/84f45a7d-92b6-4dc5-d7a1-072152fab6ff@tessares.net/ Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-21powerpc/64: don't refer nr_cpu_ids in asm code when it's undefinedYury Norov1-0/+4
generic_secondary_common_init() calls LOAD_REG_ADDR(r7, nr_cpu_ids) conditionally on CONFIG_SMP. However, if 'NR_CPUS == 1', kernel doesn't use the nr_cpu_ids, and in C code, it's just: #if NR_CPUS == 1 #define nr_cpu_ids ... This series makes declaration of nr_cpu_ids conditional on NR_CPUS == 1, and that reveals the issue, because compiler can't link the LOAD_REG_ADDR(r7, nr_cpu_ids) against nonexisting symbol. Current code looks unsafe for those who build kernel with CONFIG_SMP=y and NR_CPUS == 1. This is weird configuration, but not disallowed. Fix the linker error by replacing LOAD_REG_ADDR() with LOAD_REG_IMMEDIATE() conditionally on NR_CPUS == 1. As the following patch adds CONFIG_FORCE_NR_CPUS option that has the similar effect on nr_cpu_ids, make the generic_secondary_common_init() conditional on it too. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Yury Norov <yury.norov@gmail.com>
2022-09-16Merge tag 'v6.0-rc5' into i2c/for-mergewindowWolfram Sang16-93/+118
Linux 6.0-rc5
2022-09-15KVM: PPC: remove orphan declarations from kvm_ppc.hGaosheng Cui1-4/+0
Remove the following orphan declarations from kvm_ppc.h: 1. kvmppc_mmu_priv_switch() has been removed since commit dd9ebf1f9435 ("KVM: PPC: e500: Add shadow PID support"). 2. kvmppc_core_destroy_mmu() has been removed since commit ecc0981ff07c ("KVM: ppc: cosmetic changes to mmu hook names"). 3. kvmppc_prepare_vrma() has been removed since commit aa04b4cc5be6 ("KVM: PPC: Allocate RMAs (Real Mode Areas) at boot for use by guests"). So remove the declarations for them from header file. Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220913075029.682327-10-cuigaosheng1@huawei.com
2022-09-15powerpc/ps3: remove orphan declarations from ps3av.hGaosheng Cui1-2/+0
Remove the following orphan declarations from ps3av.h: 1. ps3av_dev_open() 2. ps3av_dev_close() They have been removed since commit 13a5e30cf740 ("[POWERPC] PS3: Rework AV settings driver"), so remove them. Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com> Acked-by: Geoff Levand <geoff@infradead.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220913075029.682327-9-cuigaosheng1@huawei.com
2022-09-15powerpc/sysdev: remove unused xics_ipi_dispatch() declarationGaosheng Cui1-1/+0
xics_ipi_dispatch() has been removed since commit 23d72bfd8f9f ("powerpc: Consolidate ipi message mux and demux"), so remove it. Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220913075029.682327-8-cuigaosheng1@huawei.com
2022-09-15powerpc/powernv: remove orphan declarations from opal.hGaosheng Cui1-6/+0
Remove the following orphan declarations from opal.h: 1. opal_notifier_register() 2. opal_notifier_unregister() 3. opal_notifier_update_evt() 4. opal_notifier_enable() 5. opal_notifier_disable() They have been removed since commit 81f2f7ce4c5b ("opal: Remove events notifier"), so remove them. Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220913075029.682327-7-cuigaosheng1@huawei.com
2022-09-15powerpc/mm: remove orphan declarations from mmu_context.hGaosheng Cui1-2/+0
Remove the following orphan declarations from mmu_context.h: 1. switch_cop() and drop_cop() have been removed since commit 6ff4d3e96652 ("powerpc: Remove old unused icswx based coprocessor support"). 2. mm_iommu_cleanup() has been removed since commit 4b6fad7097f8 ("powerpc/mm/iommu, vfio/spapr: Put pages on VFIO container shutdown"). So remove the declarations for them from header file. Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220913075029.682327-6-cuigaosheng1@huawei.com
2022-09-15powerpc: remove unused udbg_init_debug_beat() declarationGaosheng Cui1-1/+0
udbg_init_debug_beat() has been removed since commit bf4981a00636 ("powerpc: Remove the celleb support"), so remove it. Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220913075029.682327-5-cuigaosheng1@huawei.com
2022-09-15powerpc: remove unused chrp_event_scan() declarationGaosheng Cui1-1/+0
chrp_event_scan() has been removed since commit 3d541c4b7f6e ("powerpc/chrp: Use the same RTAS daemon as pSeries"), so remove it. Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220913075029.682327-4-cuigaosheng1@huawei.com
2022-09-15powerpc/spufs: remove orphan declarations from spufs.hGaosheng Cui1-2/+0
Remove the following orphan declarations from spufs.h: 1. spufs_coredump_calls has been removed since commit 48cad41f7ee7 ("[POWERPC] spufs: Combine spufs_coredump_calls with spufs_calls"). 2. spufs_coredump_num_notes has been removed since commit 936d5bf1d7dc ("[POWERPC] spufs: Get rid of spufs_coredump_num_notes, it's not needed if we NULL terminate"). Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220913075029.682327-3-cuigaosheng1@huawei.com
2022-09-15powerpc/xmon: remove unused ppc_parse_cpu() declarationGaosheng Cui1-2/+0
ppc_parse_cpu() has been removed since commit 5b102782c7f4 ("powerpc/xmon: Enable disassembly files (compilation changes)"), so remove it. Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220913075029.682327-2-cuigaosheng1@huawei.com
2022-09-14Revert "powerpc/rtas: Implement reentrant rtas call"Nathan Lynch5-99/+11
At the time this was submitted by Leonardo, I confirmed -- or thought I had confirmed -- with PowerVM partition firmware development that the following RTAS functions: - ibm,get-xive - ibm,int-off - ibm,int-on - ibm,set-xive were safe to call on multiple CPUs simultaneously, not only with respect to themselves as indicated by PAPR, but with arbitrary other RTAS calls: https://lore.kernel.org/linuxppc-dev/875zcy2v8o.fsf@linux.ibm.com/ Recent discussion with firmware development makes it clear that this is not true, and that the code in commit b664db8e3f97 ("powerpc/rtas: Implement reentrant rtas call") is unsafe, likely explaining several strange bugs we've seen in internal testing involving DLPAR and LPM. These scenarios use ibm,configure-connector, whose internal state can be corrupted by the concurrent use of the "reentrant" functions, leading to symptoms like endless busy statuses from RTAS. Fixes: b664db8e3f97 ("powerpc/rtas: Implement reentrant rtas call") Cc: stable@vger.kernel.org # v5.8+ Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com> Reviewed-by: Laurent Dufour <laurent.dufour@fr.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220907220111.223267-1-nathanl@linux.ibm.com
2022-09-12kernel: exit: cleanup release_thread()Kefeng Wang2-6/+0
Only x86 has own release_thread(), introduce a new weak release_thread() function to clean empty definitions in other ARCHs. Link: https://lkml.kernel.org/r/20220819014406.32266-1-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Acked-by: Guo Ren <guoren@kernel.org> [csky] Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Brian Cain <bcain@quicinc.com> Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc] Acked-by: Stafford Horne <shorne@gmail.com> [openrisc] Acked-by: Catalin Marinas <catalin.marinas@arm.com> [arm64] Acked-by: Huacai Chen <chenhuacai@kernel.org> [LoongArch] Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Chris Zankel <chris@zankel.net> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Guo Ren <guoren@kernel.org> [csky] Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Jonas Bonn <jonas@southpole.se> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Henderson <richard.henderson@linaro.org> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: Xuerui Wang <kernel@xen0n.name> Cc: Yoshinori Sato <ysato@users.osdn.me> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-12arch: mm: rename FORCE_MAX_ZONEORDER to ARCH_FORCE_MAX_ORDERZi Yan3-3/+3
This Kconfig option is used by individual arch to set its desired MAX_ORDER. Rename it to reflect its actual use. Link: https://lkml.kernel.org/r/20220815143959.1511278-1-zi.yan@sent.com Acked-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Zi Yan <ziy@nvidia.com> Acked-by: Guo Ren <guoren@kernel.org> [csky] Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Catalin Marinas <catalin.marinas@arm.com> [arm64] Acked-by: Huacai Chen <chenhuacai@kernel.org> [LoongArch] Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc] Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Taichi Sugaya <sugaya.taichi@socionext.com> Cc: Neil Armstrong <narmstrong@baylibre.com> Cc: Qin Jian <qinjian@cqplus1.com> Cc: Guo Ren <guoren@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Zankel <chris@zankel.net> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-09Merge tag 'powerpc-6.0-5' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fix from Michael Ellerman: - Fix crashes on bare metal due to the new plkps driver trying to probe and call the hypervisor on non-pseries machines. Thanks to Nathan Chancellor and Dan Horák. * tag 'powerpc-6.0-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/pseries: Fix plpks crash on non-pseries
2022-09-09Merge tag 'asm-generic-fixes-6.0-rc4' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull SOFTIRQ_ON_OWN_STACK rework from Arnd Bergmann: "Just one fixup patch, reworking the softirq_on_own_stack logic for preempt-rt kernels as discussed in https://lore.kernel.org/all/CAHk-=wgZSD3W2y6yczad2Am=EfHYyiPzTn3CfXxrriJf9i5W5w@mail.gmail.com/" * tag 'asm-generic-fixes-6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: asm-generic: Conditionally enable do_softirq_own_stack() via Kconfig.
2022-09-09termios: get rid of non-UAPI asm/termios.hAl Viro1-13/+0
All non-UAPI asm/termios.h consist of include of UAPI counterpart and, possibly, include of linux/uaccess.h The latter can't be simply removed, even though nothing in linux/termios.h doesn't depend upon it anymore - there are several places that rely upon that indirect chain of includes to pull linux/uaccess.h. So the include needs to be lifted out of there - we lift into tty_driver.h, serdev.h and places that pull asm/termios.h, but none of * linux/uaccess.h (obvious) * net/sock.h (pulls uaccess.h) * linux/{tty,tty_driver,serdev}.h (tty.h pulls tty_driver.h) That leaves us just with the include of UAPI asm/termios.h, which is what <asm/termios.h> will resolve to if we simply remove non-UAPI header. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Link: https://lore.kernel.org/r/YxDnKvYCHn/ogBUv@ZenIV Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-09make generic INIT_C_CC a bit more genericAl Viro1-3/+0
turn it into an array initializer; then alpha, mips and powerpc variants fold into it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Link: https://lore.kernel.org/r/YxDm7M6M91gC2RPL@ZenIV Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-09termios: consolidate values for VDISCARD in INIT_C_CCAl Viro1-2/+2
On old systems it used to be ^O. Linux had never actually used the value, but INIT_C_CC (on i386) did initialize it to ^O; unfortunately, it had a typo in the comment claiming that to be ^U. Most of the architectures copied the (correct) definition along with mistaken comment. alpha, powerpc and sparc tried to make the definition match comment. However, util-linux still resets it to ^O on any architecture, ^O is the historical value, kernel ignores it anyway and finally, Linus said "Just change everybody to do the same, nobody cares about VDISCARD". Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Link: https://lore.kernel.org/r/YxDmy//MKzs3ye7l@ZenIV Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-09termios: start unifying non-UAPI parts of asm/termios.hAl Viro1-2/+0
* new header (linut/termios_internal.h), pulled by the users of those suckers * defaults for INIT_C_CC and externs for conversion helpers moved over there * remove termios-base.h (empty now) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Link: https://lore.kernel.org/r/YxDmptU7dNGZ+/Hn@ZenIV Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-09-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netPaolo Abeni6-69/+89
drivers/net/ethernet/freescale/fec.h 7d650df99d52 ("net: fec: add pm_qos support on imx6q platform") 40c79ce13b03 ("net: fec: add stop mode support for imx8 platform") Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-09-08powerpc/powernv: add missing of_node_put() in opal_export_attrs()Zheng Yongjun1-0/+1
After using 'np' returned by of_find_node_by_path(), of_node_put() need be called to decrease the refcount. Fixes: 11fe909d2362 ("powerpc/powernv: Add OPAL exports attributes to sysfs") Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220906141703.118192-1-zhengyongjun3@huawei.com
2022-09-08powerpc/85xx: Fix fall-through warning for ClangGustavo A. R. Silva1-0/+1
Fix the following fallthrough warning: arch/powerpc/platforms/85xx/mpc85xx_cds.c:161:3: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://github.com/KSPP/linux/issues/198 Link: https://lore.kernel.org/lkml/202209061224.KxORRGVg-lkp@intel.com/ Link: https://lore.kernel.org/r/Yxe8XTY5C9qJLd0Z@work
2022-09-08powerpc/64s: add pte_needs_flush and huge_pmd_needs_flushNicholas Piggin2-0/+59
Allow PTE changes to avoid flushing the TLB when access permissions are being relaxed, the dirty bit is being set, and the accessed bit is being changed. Relaxing access permissions and setting dirty and accessed bits do not require a flush because the MMU will re-load the PTE and notice the updates (it may also cause a spurious fault). Clearing the accessed bit does not require a flush because of the imprecise PTE accessed bit accounting that is already performed, as documented in ptep_clear_flush_young(). This reduces TLB flushing for some mprotect(2) calls. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> Link: https://lore.kernel.org/r/20220901110334.1618913-1-npiggin@gmail.com
2022-09-08powerpc/math-emu: Inhibit W=1 warningsChristophe Leroy4-3/+10
When building with W=1 you get: arch/powerpc/math-emu/fre.c:6:5: error: no previous prototype for 'fre' [-Werror=missing-prototypes] arch/powerpc/math-emu/fsqrt.c:11:1: error: no previous prototype for 'fsqrt' [-Werror=missing-prototypes] arch/powerpc/math-emu/fsqrts.c:12:1: error: no previous prototype for 'fsqrts' [-Werror=missing-prototypes] arch/powerpc/math-emu/frsqrtes.c:6:5: error: no previous prototype for 'frsqrtes' [-Werror=missing-prototypes] arch/powerpc/math-emu/mtfsf.c:10:1: error: no previous prototype for 'mtfsf' [-Werror=missing-prototypes] arch/powerpc/math-emu/mtfsfi.c:10:1: error: no previous prototype for 'mtfsfi' [-Werror=missing-prototypes] arch/powerpc/math-emu/fabs.c:7:1: error: no previous prototype for 'fabs' [-Werror=missing-prototypes] arch/powerpc/math-emu/fadd.c:11:1: error: no previous prototype for 'fadd' [-Werror=missing-prototypes] arch/powerpc/math-emu/fadds.c:12:1: error: no previous prototype for 'fadds' [-Werror=missing-prototypes] arch/powerpc/math-emu/fcmpo.c:11:1: error: no previous prototype for 'fcmpo' [-Werror=missing-prototypes] arch/powerpc/math-emu/fcmpu.c:11:1: error: no previous prototype for 'fcmpu' [-Werror=missing-prototypes] arch/powerpc/math-emu/fcmpu.c:14:19: error: variable 'B_c' set but not used [-Werror=unused-but-set-variable] arch/powerpc/math-emu/fcmpu.c:13:19: error: variable 'A_c' set but not used [-Werror=unused-but-set-variable] arch/powerpc/math-emu/fctiw.c:11:1: error: no previous prototype for 'fctiw' [-Werror=missing-prototypes] arch/powerpc/math-emu/fctiwz.c:11:1: error: no previous prototype for 'fctiwz' [-Werror=missing-prototypes] arch/powerpc/math-emu/fdiv.c:11:1: error: no previous prototype for 'fdiv' [-Werror=missing-prototypes] arch/powerpc/math-emu/fdivs.c:12:1: error: no previous prototype for 'fdivs' [-Werror=missing-prototypes] arch/powerpc/math-emu/fmadd.c:11:1: error: no previous prototype for 'fmadd' [-Werror=missing-prototypes] arch/powerpc/math-emu/fmadds.c:12:1: error: no previous prototype for 'fmadds' [-Werror=missing-prototypes] arch/powerpc/math-emu/fmsub.c:11:1: error: no previous prototype for 'fmsub' [-Werror=missing-prototypes] arch/powerpc/math-emu/fmsubs.c:12:1: error: no previous prototype for 'fmsubs' [-Werror=missing-prototypes] arch/powerpc/math-emu/fmul.c:11:1: error: no previous prototype for 'fmul' [-Werror=missing-prototypes] arch/powerpc/math-emu/fmuls.c:12:1: error: no previous prototype for 'fmuls' [-Werror=missing-prototypes] arch/powerpc/math-emu/fnabs.c:7:1: error: no previous prototype for 'fnabs' [-Werror=missing-prototypes] arch/powerpc/math-emu/fneg.c:7:1: error: no previous prototype for 'fneg' [-Werror=missing-prototypes] arch/powerpc/math-emu/fnmadd.c:11:1: error: no previous prototype for 'fnmadd' [-Werror=missing-prototypes] arch/powerpc/math-emu/fnmadds.c:12:1: error: no previous prototype for 'fnmadds' [-Werror=missing-prototypes] arch/powerpc/math-emu/fnmsub.c:11:1: error: no previous prototype for 'fnmsub' [-Werror=missing-prototypes] arch/powerpc/math-emu/fnmsubs.c:12:1: error: no previous prototype for 'fnmsubs' [-Werror=missing-prototypes] arch/powerpc/math-emu/fres.c:7:1: error: no previous prototype for 'fres' [-Werror=missing-prototypes] arch/powerpc/math-emu/frsp.c:12:1: error: no previous prototype for 'frsp' [-Werror=missing-prototypes] arch/powerpc/math-emu/fsel.c:11:1: error: no previous prototype for 'fsel' [-Werror=missing-prototypes] arch/powerpc/math-emu/lfs.c:12:1: error: no previous prototype for 'lfs' [-Werror=missing-prototypes] arch/powerpc/math-emu/frsqrte.c:7:1: error: no previous prototype for 'frsqrte' [-Werror=missing-prototypes] arch/powerpc/math-emu/fsub.c:11:1: error: no previous prototype for 'fsub' [-Werror=missing-prototypes] arch/powerpc/math-emu/fsubs.c:12:1: error: no previous prototype for 'fsubs' [-Werror=missing-prototypes] arch/powerpc/math-emu/mcrfs.c:10:1: error: no previous prototype for 'mcrfs' [-Werror=missing-prototypes] arch/powerpc/math-emu/mffs.c:10:1: error: no previous prototype for 'mffs' [-Werror=missing-prototypes] arch/powerpc/math-emu/mtfsb0.c:10:1: error: no previous prototype for 'mtfsb0' [-Werror=missing-prototypes] arch/powerpc/math-emu/mtfsb1.c:10:1: error: no previous prototype for 'mtfsb1' [-Werror=missing-prototypes] arch/powerpc/math-emu/stfiwx.c:7:1: error: no previous prototype for 'stfiwx' [-Werror=missing-prototypes] arch/powerpc/math-emu/stfs.c:12:1: error: no previous prototype for 'stfs' [-Werror=missing-prototypes] arch/powerpc/math-emu/fmr.c:7:1: error: no previous prototype for 'fmr' [-Werror=missing-prototypes] arch/powerpc/math-emu/lfd.c:10:1: error: no previous prototype for 'lfd' [-Werror=missing-prototypes] arch/powerpc/math-emu/stfd.c:7:1: error: no previous prototype for 'stfd' [-Werror=missing-prototypes] arch/powerpc/math-emu/math_efp.c:177:5: error: no previous prototype for 'do_spe_mathemu' [-Werror=missing-prototypes] arch/powerpc/math-emu/math_efp.c:726:5: error: no previous prototype for 'speround_handler' [-Werror=missing-prototypes] arch/powerpc/math-emu/math_efp.c:893:12: error: no previous prototype for 'spe_mathemu_init' [-Werror=missing-prototypes] Fix the warnings in math_efp.c by adding prototypes of do_spe_mathemu() and speround_handler() to asm/processor.h and declare spe_mathemu_init() static. The other warnings are benign and not worth the churn of fixing them, expecially the 'unused-but-set-variable' which would impact the core part of 'math-emu'. So silence them by adding -Wno-missing-prototypes -Wno-unused-but-set-variable. But then you get: arch/powerpc/math-emu/fre.c:6:5: error: no previous declaration for 'fre' [-Werror=missing-declarations] arch/powerpc/math-emu/fsqrt.c:11:1: error: no previous declaration for 'fsqrt' [-Werror=missing-declarations] arch/powerpc/math-emu/fsqrts.c:12:1: error: no previous declaration for 'fsqrts' [-Werror=missing-declarations] arch/powerpc/math-emu/frsqrtes.c:6:5: error: no previous declaration for 'frsqrtes' [-Werror=missing-declarations] arch/powerpc/math-emu/mtfsf.c:10:1: error: no previous declaration for 'mtfsf' [-Werror=missing-declarations] arch/powerpc/math-emu/mtfsfi.c:10:1: error: no previous declaration for 'mtfsfi' [-Werror=missing-declarations] arch/powerpc/math-emu/fabs.c:7:1: error: no previous declaration for 'fabs' [-Werror=missing-declarations] arch/powerpc/math-emu/fadd.c:11:1: error: no previous declaration for 'fadd' [-Werror=missing-declarations] arch/powerpc/math-emu/fadds.c:12:1: error: no previous declaration for 'fadds' [-Werror=missing-declarations] arch/powerpc/math-emu/fcmpo.c:11:1: error: no previous declaration for 'fcmpo' [-Werror=missing-declarations] arch/powerpc/math-emu/fcmpu.c:11:1: error: no previous declaration for 'fcmpu' [-Werror=missing-declarations] arch/powerpc/math-emu/fctiw.c:11:1: error: no previous declaration for 'fctiw' [-Werror=missing-declarations] arch/powerpc/math-emu/fctiwz.c:11:1: error: no previous declaration for 'fctiwz' [-Werror=missing-declarations] arch/powerpc/math-emu/fdiv.c:11:1: error: no previous declaration for 'fdiv' [-Werror=missing-declarations] arch/powerpc/math-emu/fdivs.c:12:1: error: no previous declaration for 'fdivs' [-Werror=missing-declarations] arch/powerpc/math-emu/fmadd.c:11:1: error: no previous declaration for 'fmadd' [-Werror=missing-declarations] arch/powerpc/math-emu/fmadds.c:12:1: error: no previous declaration for 'fmadds' [-Werror=missing-declarations] arch/powerpc/math-emu/fmsub.c:11:1: error: no previous declaration for 'fmsub' [-Werror=missing-declarations] arch/powerpc/math-emu/fmsubs.c:12:1: error: no previous declaration for 'fmsubs' [-Werror=missing-declarations] arch/powerpc/math-emu/fmul.c:11:1: error: no previous declaration for 'fmul' [-Werror=missing-declarations] arch/powerpc/math-emu/fmuls.c:12:1: error: no previous declaration for 'fmuls' [-Werror=missing-declarations] arch/powerpc/math-emu/fnabs.c:7:1: error: no previous declaration for 'fnabs' [-Werror=missing-declarations] arch/powerpc/math-emu/fneg.c:7:1: error: no previous declaration for 'fneg' [-Werror=missing-declarations] arch/powerpc/math-emu/fnmadd.c:11:1: error: no previous declaration for 'fnmadd' [-Werror=missing-declarations] arch/powerpc/math-emu/fnmadds.c:12:1: error: no previous declaration for 'fnmadds' [-Werror=missing-declarations] arch/powerpc/math-emu/fnmsub.c:11:1: error: no previous declaration for 'fnmsub' [-Werror=missing-declarations] arch/powerpc/math-emu/fnmsubs.c:12:1: error: no previous declaration for 'fnmsubs' [-Werror=missing-declarations] arch/powerpc/math-emu/fres.c:7:1: error: no previous declaration for 'fres' [-Werror=missing-declarations] arch/powerpc/math-emu/frsp.c:12:1: error: no previous declaration for 'frsp' [-Werror=missing-declarations] arch/powerpc/math-emu/fsel.c:11:1: error: no previous declaration for 'fsel' [-Werror=missing-declarations] arch/powerpc/math-emu/lfs.c:12:1: error: no previous declaration for 'lfs' [-Werror=missing-declarations] arch/powerpc/math-emu/frsqrte.c:7:1: error: no previous declaration for 'frsqrte' [-Werror=missing-declarations] arch/powerpc/math-emu/fsub.c:11:1: error: no previous declaration for 'fsub' [-Werror=missing-declarations] arch/powerpc/math-emu/fsubs.c:12:1: error: no previous declaration for 'fsubs' [-Werror=missing-declarations] arch/powerpc/math-emu/mcrfs.c:10:1: error: no previous declaration for 'mcrfs' [-Werror=missing-declarations] arch/powerpc/math-emu/mffs.c:10:1: error: no previous declaration for 'mffs' [-Werror=missing-declarations] arch/powerpc/math-emu/mtfsb0.c:10:1: error: no previous declaration for 'mtfsb0' [-Werror=missing-declarations] arch/powerpc/math-emu/mtfsb1.c:10:1: error: no previous declaration for 'mtfsb1' [-Werror=missing-declarations] arch/powerpc/math-emu/stfiwx.c:7:1: error: no previous declaration for 'stfiwx' [-Werror=missing-declarations] arch/powerpc/math-emu/stfs.c:12:1: error: no previous declaration for 'stfs' [-Werror=missing-declarations] arch/powerpc/math-emu/fmr.c:7:1: error: no previous declaration for 'fmr' [-Werror=missing-declarations] arch/powerpc/math-emu/lfd.c:10:1: error: no previous declaration for 'lfd' [-Werror=missing-declarations] arch/powerpc/math-emu/stfd.c:7:1: error: no previous declaration for 'stfd' [-Werror=missing-declarations] So also add -Wno-missing-declarations. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/688084b40b5ac88f2905cb207d5dad947d8d34dc.1662531153.git.christophe.leroy@csgroup.eu
2022-09-08powerpc/pseries: Fix plpks crash on non-pseriesMichael Ellerman1-1/+2
As reported[1] by Nathan, the recently added plpks driver will crash if it's built into the kernel and booted on a non-pseries machine, eg powernv: kernel BUG at arch/powerpc/kernel/syscall.c:39! Oops: Exception in kernel mode, sig: 5 [#1] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA PowerNV ... NIP system_call_exception+0x90/0x3d0 LR system_call_common+0xec/0x250 Call Trace: 0xc0000000035c3e10 (unreliable) system_call_common+0xec/0x250 --- interrupt: c00 at plpar_hcall+0x38/0x60 NIP: c0000000000e4300 LR: c00000000202945c CTR: 0000000000000000 REGS: c0000000035c3e80 TRAP: 0c00 Not tainted (6.0.0-rc4) MSR: 9000000002009033 <SF,HV,VEC,EE,ME,IR,DR,RI,LE> CR: 28000284 XER: 00000000 ... NIP plpar_hcall+0x38/0x60 LR pseries_plpks_init+0x64/0x23c --- interrupt: c00 On powernv Linux is the hypervisor, so a hypercall just ends up going to the syscall path, which BUGs if the syscall (hypercall) didn't come from userspace. The fix is simply to not probe the plpks driver on non-pseries machines. [1] https://lore.kernel.org/linuxppc-dev/Yxe06fbq18Wv9y3W@dev-arch.thelio-3990X/ Fixes: 2454a7af0f2a ("powerpc/pseries: define driver for Platform KeyStore") Reported-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Tested-by: Dan Horák <dan@danny.cz> Reviewed-by: Dan Horák <dan@danny.cz> Tested-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20220907065038.1604504-1-mpe@ellerman.id.au
2022-09-06perf: Use sample_flags for data_srcKan Liang1-1/+3
Use the new sample_flags to indicate whether the data_src field is filled by the PMU driver. Remove the data_src field from the perf_sample_data_init() to minimize the number of cache lines touched. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20220901130959.1285717-6-kan.liang@linux.intel.com
2022-09-06perf: Use sample_flags for weightKan Liang1-2/+3
Use the new sample_flags to indicate whether the weight field is filled by the PMU driver. Remove the weight field from the perf_sample_data_init() to minimize the number of cache lines touched. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20220901130959.1285717-5-kan.liang@linux.intel.com
2022-09-06perf: Use sample_flags for branch stackKan Liang1-0/+1
Use the new sample_flags to indicate whether the branch stack is filled by the PMU driver. Remove the br_stack from the perf_sample_data_init() to minimize the number of cache lines touched. Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20220901130959.1285717-4-kan.liang@linux.intel.com
2022-09-06powerpc/pasemi: Use of_root in pas_pci_init()Michael Ellerman1-8/+2
Currently in pas_pci_init() a reference to the root node is leaked due to a missing of_node_put(). Instead just use of_root directly. Note that converting to of_find_compatible_node(NULL, ...) would not be entirely equivalent, because that would check the compatible property of the root node, whereas using of_root skips checking the root node and start the search at the first child of the root. Reported-by: Liang He <windhl@126.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220906010313.1296714-1-mpe@ellerman.id.au
2022-09-06powerpc/pasemi: Use strscpy instead of strlcpyRussell Currey1-2/+1
find_i2c_driver() contained the last usage of strlcpy() in arch/powerpc. The return value was used to check if strlen(src) >= n, for which strscpy() returns -E2BIG. Signed-off-by: Russell Currey <ruscur@russell.cc> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220827063946.9073-1-ruscur@russell.cc
2022-09-06powerpc/xive: fix repeated words in commentsJilin Yuan1-1/+1
Delete the redundant word 'set'. Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220831004706.35280-1-yuanjilin@cdjrlc.com
2022-09-06powerpc/vas: fix repeated words in commentsJilin Yuan1-1/+1
Delete the redundant word 'the'. Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220831004914.37055-1-yuanjilin@cdjrlc.com
2022-09-06powerpc/mobility: fix repeated words in commentsJilin Yuan1-1/+1
Delete the redundant word 'the'. Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220831005109.38314-1-yuanjilin@cdjrlc.com
2022-09-05asm-generic: Conditionally enable do_softirq_own_stack() via Kconfig.Sebastian Andrzej Siewior1-2/+2
Remove the CONFIG_PREEMPT_RT symbol from the ifdef around do_softirq_own_stack() and move it to Kconfig instead. Enable softirq stacks based on SOFTIRQ_ON_OWN_STACK which depends on HAVE_SOFTIRQ_ON_OWN_STACK and its default value is set to !PREEMPT_RT. This ensures that softirq stacks are not used on PREEMPT_RT and avoids a 'select' statement on an option which has a 'depends' statement. Link: https://lore.kernel.org/YvN5E%2FPrHfUhggr7@linutronix.de Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-09-05powerpc/powermac/udbg_scc: Add missing of_node_put()s in udbg_scc_init()Liang He1-2/+6
During the iteration of for_each_child_of_node(), we need to call of_node_put() for the old references stored in to 'ch_def' and 'ch_a' as their refcounters have been increased in last iteration. Signed-off-by: Liang He <windhl@126.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220716074344.540049-1-windhl@126.com
2022-09-05powerpc/powermac/pfunc_base: Add missing of_node_put() in macio_gpio_init_one()Liang He1-0/+2
Call of_node_put() for the reference 'gparent' escaped out of the previous for_each_child_of_node() as it has increased the refcount. Signed-off-by: Liang He <windhl@126.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220716073111.539739-1-windhl@126.com
2022-09-05powerpc/powermac/low_i2c: Add missing of_node_put() in kw_i2c_probe()Liang He1-0/+1
Call of_node_put() for the reference 'parent' returned by of_get_parent() which has increased the refcount. Signed-off-by: Liang He <windhl@126.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220716070758.539434-1-windhl@126.com
2022-09-05powerpc/powermac/feature: Add missing of_node_put()Liang He1-5/+10
In probe_one_macio(), call of_node_put() for the refernece 'node' escaped out of the for_each_node_by_name() which has increased its refcount. While the 'node' will finally escaped into a global reference, we should still call of_node_put() in fail path which will stop global reference creation. Signed-off-by: Liang He <windhl@126.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220716065412.539153-1-windhl@126.com
2022-09-05powerpc/pci-common: Fix refcount bug for 'phb->dn'Liang He1-2/+2
In pcibios_alloc_controller(), 'phb' is allocated and escaped into global 'hose_list'. So we should call of_node_get() when a new reference created into 'phb->dn'. And when phb is freed, we should call of_node_put() on it. NOTE: This function is called in the iteration of for_each_xx in chrp_find_bridges() and pSeries_discover_phbs(). If there is no of_node_get(), the object may be prematurely freed. Signed-off-by: Liang He <windhl@126.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220702022936.266146-1-windhl@126.com
2022-09-05powerpc/powernv: Add missing of_node_put()sLiang He6-3/+20
In these driver init functions, there are two kinds of errors: (1) missing of_put_node() for of_find_compatible_node()'s returned pointer (refcount incremented) in fail path or when it is not used anymore. (2) missing of_put_node() for 'for_each_xxx' loop's break Signed-off-by: Liang He <windhl@126.com> [mpe: Use out_put_xxx goto label naming] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220620132553.4073863-1-windhl@126.com
2022-09-05powerpc/fsl_pci: Remove of_node_put() when reference escaped outLiang He1-1/+0
In fsl_pci_assign_primary(), we should remove the of_node_put() when breaking out of the for_each_matching_node() as the 'np' is escaped out by global 'fsl_pci_primary'. Signed-off-by: Liang He <windhl@126.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220720124557.1256243-1-windhl@126.com
2022-09-05powerpc/85xx: Add missing of_node_get/put() in ge_imp3a_pci_assign_primary()Liang He1-2/+4
for_each_node_by_type() will automatically increase and decrease the refcount during the iteration. However, there is a reference escaped into global 'fsl_pci_primary' and we need to handle it. Signed-off-by: Liang He <windhl@126.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220701140119.245435-1-windhl@126.com
2022-09-05powerpc/44x: Add of_node_put() when break out from for_eachLiang He1-0/+2
In ppc47x_init_irq(), we need to call of_node_put() when there is a break during the iteration of for_each_node_with_property() which will automatically increase and decrease the refcount. Signed-off-by: Liang He <windhl@126.com> [mpe: mpic_alloc() takes its own reference] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220701133126.243102-1-windhl@126.com
2022-09-05powerpc/pci_dn: Add missing of_node_put()Liang He1-0/+1
In pci_add_device_node_info(), use of_node_put() to drop the reference to 'parent' returned by of_get_parent() to keep refcount balance. Fixes: cca87d303c85 ("powerpc/pci: Refactor pci_dn") Co-authored-by: Miaoqian Lin <linmq006@gmail.com> Signed-off-by: Liang He <windhl@126.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Tyrel Datwyler <tyreld@linux.ibm.com> Link: https://lore.kernel.org/r/20220701131750.240170-1-windhl@126.com
2022-09-05powerpc/pseries: Add missing of_node_put()s in hotplug-cpu.cLiang He1-4/+11
In pseries_cpuhp_cache_use_count() and pseries_cpuhp_detach_nodes(), we need carefully hold the reference returned by of_find_next_cache_node() and use it to call of_node_put() to keep refcount balance. Signed-off-by: Liang He <windhl@126.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220621111701.4082889-1-windhl@126.com
generated by cgit v1.2.3 (git 2.39.0) at 2025-09-26 12:39:15 +0300