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2019-08-26MIPS: Treat Loongson Extensions as ASEsJiaxun Yang4-0/+30
Recently, binutils had split Loongson-3 Extensions into four ASEs: MMI, CAM, EXT, EXT2. This patch do the samething in kernel and expose them in cpuinfo so applications can probe supported ASEs at runtime. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: Huacai Chen <chenhc@lemote.com> Cc: Yunqiang Su <ysu@wavecomp.com> Cc: stable@vger.kernel.org # v4.14+ Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org
2019-08-26MIPS: Remove dev_err() usage after platform_get_irq()Stephen Boyd1-3/+1
We don't need dev_err() messages when platform_get_irq() fails now that platform_get_irq() prints an error message itself when something goes wrong. Let's remove these prints with a simple semantic patch. // <smpl> @@ expression ret; struct platform_device *E; @@ ret = ( platform_get_irq(E, ...) | platform_get_irq_byname(E, ...) ); if ( \( ret < 0 \| ret <= 0 \) ) { ( -if (ret != -EPROBE_DEFER) -{ ... -dev_err(...); -... } | ... -dev_err(...); ) ... } // </smpl> While we're here, remove braces on if statements that only have one statement (manually). Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@mips.com> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-kernel@vger.kernel.org
2019-08-24MIPS: dts: mscc: describe the PTP ready interruptAntoine Tenart1-2/+2
This patch adds a description of the PTP ready interrupt, which can be triggered when a PTP timestamp is available on an hardware FIFO. Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: davem@davemloft.net Cc: richardcochran@gmail.com Cc: alexandre.belloni@bootlin.com Cc: UNGLinuxDriver@microchip.com Cc: ralf@linux-mips.org Cc: jhogan@kernel.org Cc: netdev@vger.kernel.org Cc: linux-mips@vger.kernel.org Cc: thomas.petazzoni@bootlin.com Cc: allan.nielsen@microchip.com
2019-08-24MIPS: dts: mscc: describe the PTP register rangeAntoine Tenart1-1/+2
This patch adds one register range within the mscc,vsc7514-switch node, to describe the PTP registers. Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: davem@davemloft.net Cc: richardcochran@gmail.com Cc: alexandre.belloni@bootlin.com Cc: UNGLinuxDriver@microchip.com Cc: ralf@linux-mips.org Cc: jhogan@kernel.org Cc: netdev@vger.kernel.org Cc: linux-mips@vger.kernel.org Cc: thomas.petazzoni@bootlin.com Cc: allan.nielsen@microchip.com
2019-08-24MIPS: lantiq: update the clock alias' for the mainline PCIe PHY driverMartin Blumenstingl1-8/+8
The mainline PCIe PHY driver has it's own devicetree node. Update the clock alias so the mainline driver finds the clocks. The first PCIe PHY is located at 0x1f106800 and exists on VRX200, ARX300 and GRX390. The second PCIe PHY is located at 0x1f700400 and exists on ARX300 and GRX390. The third PCIe PHY is located at 0x1f106a00 and exists onl on GRX390. Lantiq's board support package (called "UGW") names these registers "PDI". Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: devicetree@vger.kernel.org Cc: john@phrozen.org Cc: kishon@ti.com Cc: ralf@linux-mips.org Cc: robh+dt@kernel.org Cc: linux-kernel@vger.kernel.org Cc: hauke@hauke-m.de Cc: mark.rutland@arm.com Cc: ms@dev.tdt.de
2019-08-24mips: avoid explicit UB in assignment of mips_io_port_baseNick Desaulniers2-13/+3
The code in question is modifying a variable declared const through pointer manipulation. Such code is explicitly undefined behavior, and is the lone issue preventing malta_defconfig from booting when built with Clang: If an attempt is made to modify an object defined with a const-qualified type through use of an lvalue with non-const-qualified type, the behavior is undefined. LLVM is removing such assignments. A simple fix is to not declare variables const that you plan on modifying. Limiting the scope would be a better method of preventing unwanted writes to such a variable. Further, the code in question mentions "compiler bugs" without any links to bug reports, so it is difficult to know if the issue is resolved in GCC. The patch was authored in 2006, which would have been GCC 4.0.3 or 4.1.1. The minimal supported version of GCC in the Linux kernel is currently 4.6. For what its worth, there was UB before the commit in question, it just added a barrier and got lucky IRT codegen. I don't think there's any actual compiler bugs related, just runtime bugs due to UB. Link: https://github.com/ClangBuiltLinux/linux/issues/610 Fixes: 966f4406d903 ("[MIPS] Work around bad code generation for <asm/io.h>.") Reported-by: Nathan Chancellor <natechancellor@gmail.com> Debugged-by: Nathan Chancellor <natechancellor@gmail.com> Suggested-by: Eli Friedman <efriedma@quicinc.com> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Tested-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: ralf@linux-mips.org Cc: jhogan@kernel.org Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: Hassan Naveed <hnaveed@wavecomp.com> Cc: Stephen Kitt <steve@sk2.org> Cc: Serge Semin <fancer.lancer@gmail.com> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Michal Hocko <mhocko@suse.com> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: clang-built-linux@googlegroups.com
2019-08-23MIPS: Fix build with CONFIG_PROC_VMCORE=yPaul Burton1-1/+1
Commit a94e4f24ec83 ("MIPS: init: Drop boot_mem_map") introduced a reference to a non-existant "end" field in struct memblock_region. Replace it with a sum of the base & size fields to fix builds with CONFIG_PROC_VMCORE=y. Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Paul Burton <paul.burton@mips.com>
2019-08-23MIPS: mm: Fix highmem compilePaul Burton1-0/+2
Commit a5718fe8f70f ("MIPS: mm: Drop boot_mem_map") removed the definition of a page variable for some reason, but that variable is still used. Restore it to fix compilation with CONFIG_HIGHMEM enabled. Signed-off-by: Paul Burton <paul.burton@mips.com>
2019-08-23MIPS: init: Drop boot_mem_mapJiaxun Yang2-286/+85
boot_mem_map was introduced very early and cannot handle memory maps with nid. Nowadays, memblock can exactly replace boot_mem_map. Detect pfn info and setup resources with memblock maps. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> [paul.burton@mips.com: Fix size calculation in check_kernel_sections_mem] Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: yasha.che3@gmail.com Cc: aurelien@aurel32.net Cc: sfr@canb.auug.org.au Cc: fancer.lancer@gmail.com Cc: matt.redfearn@mips.com Cc: chenhc@lemote.com
2019-08-23MIPS: mm: Drop boot_mem_mapJiaxun Yang1-57/+37
Initialize maar by resource map and replace page_is_ram by memblock_is_memory. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> [paul.burton@mips.com: - Fix bad MAAR address calculations. - Use ALIGN() & define maar_align to make it clearer what's going on with address manipulations. - Drop the new used field from struct maar_config. - Rework the RAM walk to avoid iterating over the cfg array needlessly to find the first unused entry, then count used entries at the end. Instead just keep the count as we go.] Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: yasha.che3@gmail.com Cc: aurelien@aurel32.net Cc: sfr@canb.auug.org.au Cc: fancer.lancer@gmail.com Cc: matt.redfearn@mips.com Cc: chenhc@lemote.com
2019-08-23MIPS: xlp: Drop boot_mem_mapJiaxun Yang1-6/+6
Simply replace with memblock functions. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: yasha.che3@gmail.com Cc: aurelien@aurel32.net Cc: sfr@canb.auug.org.au Cc: fancer.lancer@gmail.com Cc: matt.redfearn@mips.com Cc: chenhc@lemote.com
2019-08-23MIPS: ip22: Drop addr_is_ramJiaxun Yang1-18/+2
It can be replaced by page_is_ram. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: yasha.che3@gmail.com Cc: aurelien@aurel32.net Cc: sfr@canb.auug.org.au Cc: fancer.lancer@gmail.com Cc: matt.redfearn@mips.com Cc: chenhc@lemote.com
2019-08-23MIPS: msp: Record prom memoryJiaxun Yang1-6/+16
boot_mem_map is nolonger exist so we need to maintain a list of prom memory by ourselves Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: yasha.che3@gmail.com Cc: aurelien@aurel32.net Cc: sfr@canb.auug.org.au Cc: fancer.lancer@gmail.com Cc: matt.redfearn@mips.com Cc: chenhc@lemote.com
2019-08-23MIPS: malta: Drop prom_free_prom_memoryJiaxun Yang1-11/+0
Current prom_free_prom_memory is freeing maps marked as BOOT_MEM_ROM_DATA, however, nobody is exactly setting this type for malta. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: yasha.che3@gmail.com Cc: aurelien@aurel32.net Cc: sfr@canb.auug.org.au Cc: fancer.lancer@gmail.com Cc: matt.redfearn@mips.com Cc: chenhc@lemote.com
2019-08-23MIPS: fw: Record prom memoryJiaxun Yang1-6/+18
boot_mem_map is nolonger exist so we need to maintain a list of prom memory by ourselves. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: yasha.che3@gmail.com Cc: aurelien@aurel32.net Cc: sfr@canb.auug.org.au Cc: fancer.lancer@gmail.com Cc: matt.redfearn@mips.com Cc: chenhc@lemote.com
2019-08-23MIPS: OCTEON: Drop boot_mem_mapJiaxun Yang2-12/+8
Replace walk through boot_mem_map with for_each_memblock. And remove the check of total boot_mem_map. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: yasha.che3@gmail.com Cc: aurelien@aurel32.net Cc: sfr@canb.auug.org.au Cc: fancer.lancer@gmail.com Cc: matt.redfearn@mips.com Cc: chenhc@lemote.com
2019-08-22Merge tag 'Wimplicit-fallthrough-5.3-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linuxLinus Torvalds1-0/+1
Pull more fallthrough fixes from Gustavo A. R. Silva: "Fix fall-through warnings on arm and mips for multiple configurations" * tag 'Wimplicit-fallthrough-5.3-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux: video: fbdev: acornfb: Mark expected switch fall-through scsi: libsas: sas_discover: Mark expected switch fall-through MIPS: Octeon: Mark expected switch fall-through power: supply: ab8500_charger: Mark expected switch fall-through watchdog: wdt285: Mark expected switch fall-through mtd: sa1100: Mark expected switch fall-through drm/sun4i: tcon: Mark expected switch fall-through drm/sun4i: sun6i_mipi_dsi: Mark expected switch fall-through ARM: riscpc: Mark expected switch fall-through dmaengine: fsldma: Mark expected switch fall-through
2019-08-22kbuild: add CONFIG_ASM_MODVERSIONSMasahiro Yamada1-0/+1
Add CONFIG_ASM_MODVERSIONS. This allows to remove one if-conditional nesting in scripts/Makefile.build. scripts/Makefile.build is run every time Kbuild descends into a sub-directory. So, I want to avoid $(wildcard ...) evaluation where possible although computing $(wildcard ...) is so cheap that it may not make measurable performance difference. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
2019-08-20MIPS: Octeon: Mark expected switch fall-throughGustavo A. R. Silva1-0/+1
Mark switch cases where we are expecting to fall through. Fix the following warning (Building: cavium_octeon_defconfig mips): arch/mips/include/asm/octeon/cvmx-sli-defs.h:47:6: warning: this statement may fall through [-Wimplicit-fallthrough=] Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
2019-08-19MIPS: Octeon: Fix a typo in #define OCTOEN_SERIAL_LENChristophe JAILLET1-2/+2
It should be OCTEON_SERIAL_LEN. Update the #define and use it accordingly Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: ralf@linux-mips.org Cc: jhogan@kernel.org Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: kernel-janitors@vger.kernel.org
2019-08-16drivers: remove the SGI SN2 IOC4 base supportChristoph Hellwig5-5/+0
The IOC4 is a multi-function chip seen on SGI SN2 and some SGI MIPS systems. This removes the base driver, which while not having an SN2 Kconfig dependency was only for sub-drivers that had one. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lkml.kernel.org/r/20190813072514.23299-15-hch@lst.de Signed-off-by: Tony Luck <tony.luck@intel.com>
2019-08-11MIPS: tlbex: Explicitly cast _PAGE_NO_EXEC to a booleanNathan Chancellor1-1/+1
clang warns: arch/mips/mm/tlbex.c:634:19: error: use of logical '&&' with constant operand [-Werror,-Wconstant-logical-operand] if (cpu_has_rixi && _PAGE_NO_EXEC) { ^ ~~~~~~~~~~~~~ arch/mips/mm/tlbex.c:634:19: note: use '&' for a bitwise operation if (cpu_has_rixi && _PAGE_NO_EXEC) { ^~ & arch/mips/mm/tlbex.c:634:19: note: remove constant to silence this warning if (cpu_has_rixi && _PAGE_NO_EXEC) { ~^~~~~~~~~~~~~~~~ 1 error generated. Explicitly cast this value to a boolean so that clang understands we intend for this to be a non-zero value. Fixes: 00bf1c691d08 ("MIPS: tlbex: Avoid placing software PTE bits in Entry* PFN fields") Link: https://github.com/ClangBuiltLinux/linux/issues/609 Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: clang-built-linux@googlegroups.com
2019-08-11MIPS/ptrace: Update mips_get_syscall_arg's return typeNathan Chancellor1-14/+7
clang warns: arch/mips/include/asm/syscall.h:136:3: error: variable 'ret' is uninitialized when used here [-Werror,-Wuninitialized] ret |= mips_get_syscall_arg(args++, task, regs, i++); ^~~ arch/mips/include/asm/syscall.h:129:9: note: initialize the variable 'ret' to silence this warning int ret; ^ = 0 1 error generated. It's not wrong; however, it's not an issue in practice because ret is only assigned to, not read from. ret could just be initialized to zero but looking into it further, ret has been unused since it was first added in 2012 so just get rid of it and update mips_get_syscall_arg's return type since none of the return values are ever checked. If it is ever needed again, this commit can be reverted and ret can be properly initialized. Fixes: c0ff3c53d4f9 ("MIPS: Enable HAVE_ARCH_TRACEHOOK.") Link: https://github.com/ClangBuiltLinux/linux/issues/604 Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: clang-built-linux@googlegroups.com
2019-08-11MIPS: Don't use bc_false uninitialized in __mm_isBranchInstrNathan Chancellor1-1/+1
clang warns: arch/mips/kernel/branch.c:148:8: error: variable 'bc_false' is used uninitialized whenever switch case is taken [-Werror,-Wsometimes-uninitialized] case mm_bc2t_op: ^~~~~~~~~~ arch/mips/kernel/branch.c:157:8: note: uninitialized use occurs here if (bc_false) ^~~~~~~~ arch/mips/kernel/branch.c:149:8: error: variable 'bc_false' is used uninitialized whenever switch case is taken [-Werror,-Wsometimes-uninitialized] case mm_bc1t_op: ^~~~~~~~~~ arch/mips/kernel/branch.c:157:8: note: uninitialized use occurs here if (bc_false) ^~~~~~~~ arch/mips/kernel/branch.c:142:4: note: variable 'bc_false' is declared here int bc_false = 0; ^ 2 errors generated. When mm_bc1t_op and mm_bc2t_op are taken, the bc_false initialization does not happen, which leads to a garbage value upon use, as illustrated below with a small sample program. $ mipsel-linux-gnu-gcc --version | head -n1 mipsel-linux-gnu-gcc (Debian 8.3.0-2) 8.3.0 $ clang --version | head -n1 ClangBuiltLinux clang version 9.0.0 (git://github.com/llvm/llvm-project 544315b4197034a3be8acd12cba56a75fb1f08dc) (based on LLVM 9.0.0svn) $ cat test.c #include <stdio.h> static void switch_scoped(int opcode) { switch (opcode) { case 1: case 2: { int bc_false = 0; bc_false = 4; case 3: case 4: printf("\t* switch scoped bc_false = %d\n", bc_false); } } } static void function_scoped(int opcode) { int bc_false = 0; switch (opcode) { case 1: case 2: { bc_false = 4; case 3: case 4: printf("\t* function scoped bc_false = %d\n", bc_false); } } } int main(void) { int opcode; for (opcode = 1; opcode < 5; opcode++) { printf("opcode = %d:\n", opcode); switch_scoped(opcode); function_scoped(opcode); printf("\n"); } return 0; } $ mipsel-linux-gnu-gcc -std=gnu89 -static test.c && \ qemu-mipsel a.out opcode = 1: * switch scoped bc_false = 4 * function scoped bc_false = 4 opcode = 2: * switch scoped bc_false = 4 * function scoped bc_false = 4 opcode = 3: * switch scoped bc_false = 2147483004 * function scoped bc_false = 0 opcode = 4: * switch scoped bc_false = 2147483004 * function scoped bc_false = 0 $ clang -std=gnu89 --target=mipsel-linux-gnu -m32 -static test.c && \ qemu-mipsel a.out opcode = 1: * switch scoped bc_false = 4 * function scoped bc_false = 4 opcode = 2: * switch scoped bc_false = 4 * function scoped bc_false = 4 opcode = 3: * switch scoped bc_false = 2147483004 * function scoped bc_false = 0 opcode = 4: * switch scoped bc_false = 2147483004 * function scoped bc_false = 0 Move the definition up so that we get the right behavior and mark it __maybe_unused as it will not be used when CONFIG_MIPS_FP_SUPPORT isn't enabled. Fixes: 6a1cc218b9cc ("MIPS: branch: Remove FP branch handling when CONFIG_MIPS_FP_SUPPORT=n") Link: https://github.com/ClangBuiltLinux/linux/issues/603 Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: clang-built-linux@googlegroups.com
2019-08-09Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds1-10/+0
Pull kvm fixes from Paolo Bonzini: "Bugfixes (arm and x86) and cleanups" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: selftests: kvm: Adding config fragments KVM: selftests: Update gitignore file for latest changes kvm: remove unnecessary PageReserved check KVM: arm/arm64: vgic: Reevaluate level sensitive interrupts on enable KVM: arm: Don't write junk to CP15 registers on reset KVM: arm64: Don't write junk to sysregs on reset KVM: arm/arm64: Sync ICH_VMCR_EL2 back when about to block x86: kvm: remove useless calls to kvm_para_available KVM: no need to check return value of debugfs_create functions KVM: remove kvm_arch_has_vcpu_debugfs() KVM: Fix leak vCPU's VMCS value into other pCPU KVM: Check preempted_in_kernel for involuntary preemption KVM: LAPIC: Don't need to wakeup vCPU twice afer timer fire arm64: KVM: hyp: debug-sr: Mark expected switch fall-through KVM: arm64: Update kvm_arm_exception_class and esr_class_str for new EC KVM: arm: vgic-v3: Mark expected switch fall-through arm64: KVM: regmap: Fix unexpected switch fall-through KVM: arm/arm64: Introduce kvm_pmu_vcpu_init() to setup PMU counter index
2019-08-09Merge tag 'kvmarm-fixes-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEADPaolo Bonzini58-232/+395
KVM/arm fixes for 5.3 - A bunch of switch/case fall-through annotation, fixing one actual bug - Fix PMU reset bug - Add missing exception class debug strings
2019-08-08Merge branch 'ingenic-tcu-v5.4' into mips-nextPaul Burton7-150/+92
Merge the Ingenic TCU patchset from the ingenic-tcu-v5.4 branch which was created to enable follow-on changes in other subsystems. Signed-off-by: Paul Burton <paul.burton@mips.com>
2019-08-08MIPS: jz4740: Drop obsolete codePaul Cercueil1-149/+2
The old clocksource/timer platform code is now obsoleted by the newly introduced TCU drivers. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Tested-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lee Jones <lee.jones@linaro.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Michael Turquette <mturquette@baylibre.com> Cc: Stephen Boyd <sboyd@kernel.org> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-doc@vger.kernel.org Cc: linux-mips@vger.kernel.org Cc: linux-clk@vger.kernel.org Cc: od@zcrc.me
2019-08-08MIPS: GCW0: Reduce system timer and clocksource to 750 kHzPaul Cercueil1-0/+10
The default clock (12 MHz) is too fast for the system timer. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Tested-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lee Jones <lee.jones@linaro.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Michael Turquette <mturquette@baylibre.com> Cc: Stephen Boyd <sboyd@kernel.org> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-doc@vger.kernel.org Cc: linux-mips@vger.kernel.org Cc: linux-clk@vger.kernel.org Cc: od@zcrc.me
2019-08-08MIPS: CI20: Reduce system timer and clocksource to 3 MHzPaul Cercueil1-0/+7
The default clock (48 MHz) is too fast for the system timer. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Tested-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lee Jones <lee.jones@linaro.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Michael Turquette <mturquette@baylibre.com> Cc: Stephen Boyd <sboyd@kernel.org> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-doc@vger.kernel.org Cc: linux-mips@vger.kernel.org Cc: linux-clk@vger.kernel.org Cc: od@zcrc.me
2019-08-08MIPS: qi_lb60: Reduce system timer and clocksource to 750 kHzPaul Cercueil1-0/+7
The default clock (12 MHz) is too fast for the system timer, which fails to report time accurately. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Tested-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lee Jones <lee.jones@linaro.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Michael Turquette <mturquette@baylibre.com> Cc: Stephen Boyd <sboyd@kernel.org> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-doc@vger.kernel.org Cc: linux-mips@vger.kernel.org Cc: linux-clk@vger.kernel.org Cc: od@zcrc.me
2019-08-08MIPS: jz4740: Add DTS nodes for the TCU driversPaul Cercueil3-0/+66
Add DTS nodes for the JZ4780, JZ4770 and JZ4740 devicetree files. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Tested-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lee Jones <lee.jones@linaro.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Michael Turquette <mturquette@baylibre.com> Cc: Stephen Boyd <sboyd@kernel.org> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-doc@vger.kernel.org Cc: linux-mips@vger.kernel.org Cc: linux-clk@vger.kernel.org Cc: od@zcrc.me
2019-08-08PCI: Convert pci_resource_to_user() to a weak functionDenis Efremov1-1/+0
Convert pci_resource_to_user() to a weak function so the existing architecture-specific implementations will automatically override the generic one. This allows us to remove HAVE_ARCH_PCI_RESOURCE_TO_USER definitions and avoid the conditional compilation for this single function. Link: https://lore.kernel.org/r/20190729101401.28068-1-efremov@linux.com Link: https://lore.kernel.org/r/20190729101401.28068-2-efremov@linux.com Link: https://lore.kernel.org/r/20190729101401.28068-3-efremov@linux.com Link: https://lore.kernel.org/r/20190729101401.28068-4-efremov@linux.com Link: https://lore.kernel.org/r/20190729101401.28068-5-efremov@linux.com Link: https://lore.kernel.org/r/20190729101401.28068-6-efremov@linux.com Signed-off-by: Denis Efremov <efremov@linux.com> [bhelgaas: squash into one commit] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Paul Burton <paul.burton@mips.com> # MIPS
2019-08-06mips: fix vdso32 build, againArnd Bergmann2-10/+1
The generic vdso support adds the same #if hack in two places, asm/vdso/vdso.h and config-n32-o32-env.c, but only the second is actually used. The result lacks the BUILD_VDSO32_64 macro, and that triggers a build error: ./include/linux/page-flags-layout.h:95:2: error: #error "Not enough bits in page flags" Move the macro into the other place, and remove the duplicated bits. Reported-by: Guenter Roeck <linux@roeck-us.net> Fixes: ee38d94a0ad8 ("page flags: prioritize kasan bits over last-cpuid") Fixes: 24640f233b46 ("mips: Add support for generic vDSO") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Christoph Lameter <cl@linux.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org
2019-08-06MIPS: octeon: Remove ARCH_HAS_IRQ_PER_CPUPaul Burton1-1/+0
ARCH_HAS_IRQ_PER_CPU is unused anywhere in the kernel - remove the definition. Signed-off-by: Paul Burton <paul.burton@mips.com>
2019-08-06MIPS: octeon: Remove cpu_has_saaPaul Burton1-8/+0
The cpu_has_saa feature macro was added along with Cavium Octeon CPU support back in commit 5b3b16880f40 ("MIPS: Add Cavium OCTEON processor support files to arch/mips/cavium-octeon.") but has never been used. Remove the dead code. Signed-off-by: Paul Burton <paul.burton@mips.com>
2019-08-06Merge tag 'mips_fixes_5.3_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linuxLinus Torvalds6-1/+20
Pull MIPS fixes from Paul Burton: "A few MIPS fixes for 5.3: - Various switch fall through annotations to fixup warnings & errors resulting from -Wimplicit-fallthrough. - A fix for systems (at least jazz) using an i8253 PIT as clocksource when it's not suitably configured. - Set struct cacheinfo's cpu_map_populated field to true, indicating that we filled in cache info detected from cop0 registers & avoiding complaints about that info being (intentionally) missing in devicetree" * tag 'mips_fixes_5.3_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MIPS: BCM63XX: Mark expected switch fall-through MIPS: OProfile: Mark expected switch fall-throughs MIPS: Annotate fall-through in Cavium Octeon code MIPS: Annotate fall-through in kvm/emulate.c mips: fix cacheinfo MIPS: kernel: only use i8253 clocksource with periodic clockevent
2019-08-05MIPS: Ingenic: Disable broken BTB lookup optimization.Zhou Yanjie2-0/+11
In order to further reduce power consumption, the XBurst core by default attempts to avoid branch target buffer lookups by detecting & special casing loops. This feature will cause BogoMIPS and lpj calculate in error. Set cp0 config7 bit 4 to disable this feature. Signed-off-by: Zhou Yanjie <zhouyanjie@zoho.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: ralf@linux-mips.org Cc: paul@crapouillou.net Cc: jhogan@kernel.org Cc: malat@debian.org Cc: gregkh@linuxfoundation.org Cc: tglx@linutronix.de Cc: allison@lohutok.net Cc: syq@debian.org Cc: chenhc@lemote.com Cc: jiaxun.yang@flygoat.com
2019-08-05MIPS: Ingenic: Fix bugs when detecting X1000's L2 cache.Zhou Yanjie1-7/+20
1.fix bugs when detecting L2 cache sets value. 2.fix bugs when detecting L2 cache ways value. Signed-off-by: Zhou Yanjie <zhouyanjie@zoho.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: ralf@linux-mips.org Cc: paul@crapouillou.net Cc: jhogan@kernel.org Cc: malat@debian.org Cc: gregkh@linuxfoundation.org Cc: tglx@linutronix.de Cc: allison@lohutok.net Cc: syq@debian.org Cc: chenhc@lemote.com Cc: jiaxun.yang@flygoat.com
2019-08-05MIPS: BCM63XX: Mark expected switch fall-throughGustavo A. R. Silva1-0/+1
Mark switch cases where we are expecting to fall through. This patch fixes the following warning (Building: bcm63xx_defconfig mips): arch/mips/pci/ops-bcm63xx.c: In function ‘bcm63xx_pcie_can_access’: arch/mips/pci/ops-bcm63xx.c:474:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if (PCI_SLOT(devfn) == 0) ^ arch/mips/pci/ops-bcm63xx.c:477:2: note: here default: ^~~~~~~ Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: bcm-kernel-feedback-list@broadcom.com Cc: linux-mips@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org
2019-08-05KVM: remove kvm_arch_has_vcpu_debugfs()Paolo Bonzini1-10/+0
There is no need for this function as all arches have to implement kvm_arch_create_vcpu_debugfs() no matter what. A #define symbol let us actually simplify the code. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-08-03page flags: prioritize kasan bits over last-cpuidArnd Bergmann1-0/+1
ARM64 randdconfig builds regularly run into a build error, especially when NUMA_BALANCING and SPARSEMEM are enabled but not SPARSEMEM_VMEMMAP: #error "KASAN: not enough bits in page flags for tag" The last-cpuid bits are already contitional on the available space, so the result of the calculation is a bit random on whether they were already left out or not. Adding the kasan tag bits before last-cpuid makes it much more likely to end up with a successful build here, and should be reliable for randconfig at least, as long as that does not randomize NR_CPUS or NODES_SHIFT but uses the defaults. In order for the modified check to not trigger in the x86 vdso32 code where all constants are wrong (building with -m32), enclose all the definitions with an #ifdef. [arnd@arndb.de: build fix] Link: http://lkml.kernel.org/r/CAK8P3a3Mno1SWTcuAOT0Wa9VS15pdU6EfnkxLbDpyS55yO04+g@mail.gmail.com Link: http://lkml.kernel.org/r/20190722115520.3743282-1-arnd@arndb.de Link: https://lore.kernel.org/lkml/20190618095347.3850490-1-arnd@arndb.de/ Fixes: 2813b9c02962 ("kasan, mm, arm64: tag non slab memory allocated via pagealloc") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Christoph Lameter <cl@linux.com> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-07-30mips: remove nargs from __SYSCALLFiroz Khan5-6/+6
The __SYSCALL macro's arguments are system call number, system call entry name and number of arguments for the system call. Argument- nargs in __SYSCALL(nr, entry, nargs) is neither calculated nor used anywhere. So it would be better to keep the implementaion as __SYSCALL(nr, entry). This will unifies the implementation with some other architetures too. Signed-off-by: Firoz Khan <firoz.khan@linaro.org> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Kate Stewart <kstewart@linuxfoundation.org> Cc: y2038@lists.linaro.org Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: arnd@arndb.de Cc: deepa.kernel@gmail.com Cc: marcin.juszkiewicz@linaro.org
2019-07-30MIPS: jz4740: Drop dead codePaul Cercueil8-370/+2
Remove all the source files that are not used anywhere anymore. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Paul Burton <paul.burton@mips.com>
2019-07-30MIPS: configs: LB60: update defconfigPaul Cercueil1-22/+22
Update the defconfig to select the new drivers instead of the old ones. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Paul Burton <paul.burton@mips.com>
2019-07-30MIPS: qi_lb60: Migrate to devicetreePaul Cercueil3-496/+287
Move all the platform data to devicetree. The only bit dropped is the PWM beeper, which requires the PWM driver to be updated. I figured it's okay to remove it here since it's really a non-critical device, and it'll be re-introduced soon enough. The other change is the CS line of the SPI is now set as active low. The SPI core would have forced "active low" anyway, unless the 'spi-cs-high' property is set. In the process of moving to devicetree, we also switched to new drivers: - We use the simple-audio-card and simple-amplifier drivers instead of the custom ASoC code; - We use the new Ingenic DRM driver coupled with the GiantPlus GPM940B0 DRM panel driver instead of the old framebuffer driver; - We use the new jz4780-dma driver instead of the old jz4740-dma one; - We use the ingenic-nand and jz4740-ecc drivers instead of the old jz4740-nand driver; - We use ingenic-battery instead of jz4740-battery; - We use iio-hwmon instead of jz4740-hwmon; - We use ingenic-iio instead of the old jz4740-adc MFD driver. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Artur Rojek <contact@artur-rojek.eu> [paul.burton@mips.com: Drop the unused & undocumented ili8960 spi@0 node.] Signed-off-by: Paul Burton <paul.burton@mips.com>
2019-07-30MIPS: DTS: jz4740: Add missing nodesPaul Cercueil1-0/+84
Add nodes for the MMC, AIC, ADC, CODEC, MUSB, LCD, memory, and BCH controllers. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Paul Burton <paul.burton@mips.com>
2019-07-30MIPS: Kconfig: remove HAVE_LATENCYTOP_SUPPORTFabian Mewes1-4/+0
HAVE_LATENCYTOP_SUPPORT was removed all together in commit da48d094ce5d7 ("Kconfig: remove HAVE_LATENCYTOP_SUPPORT"). This commit removes a leftover in the MIPS Kconfig. Signed-off-by: Fabian Mewes <architekt@coding4coffee.org> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org
2019-07-30MIPS: X1000: Add X1000 system type.Zhou Yanjie3-1/+6
Add X1000 system type for cat /proc/cpuinfo to give out X1000. Signed-off-by: Zhou Yanjie <zhouyanjie@zoho.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: ralf@linux-mips.org Cc: paul@crapouillou.net Cc: jhogan@kernel.org Cc: fancer.lancer@gmail.com Cc: chenhc@lemote.com Cc: tglx@linutronix.de Cc: gregkh@linuxfoundation.org Cc: armijn@tjaldur.nl Cc: syq@debian.org Cc: jiaxun.yang@flygoat.com
2019-07-30MIPS: OProfile: Mark expected switch fall-throughsGustavo A. R. Silva1-0/+13
Mark switch cases where we are expecting to fall through. This patch fixes the following warning (Building: mips): arch/mips/oprofile/op_model_mipsxx.c: In function ‘mipsxx_cpu_stop’: arch/mips/oprofile/op_model_mipsxx.c:217:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfctrl3(0); ^~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:218:2: note: here case 3: ^~~~ arch/mips/oprofile/op_model_mipsxx.c:219:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfctrl2(0); ^~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:220:2: note: here case 2: ^~~~ arch/mips/oprofile/op_model_mipsxx.c:221:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfctrl1(0); ^~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:222:2: note: here case 1: ^~~~ arch/mips/oprofile/op_model_mipsxx.c: In function ‘mipsxx_cpu_start’: arch/mips/oprofile/op_model_mipsxx.c:197:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfctrl3(WHAT | reg.control[3]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:198:2: note: here case 3: ^~~~ arch/mips/oprofile/op_model_mipsxx.c:199:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfctrl2(WHAT | reg.control[2]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:200:2: note: here case 2: ^~~~ arch/mips/oprofile/op_model_mipsxx.c:201:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfctrl1(WHAT | reg.control[1]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:202:2: note: here case 1: ^~~~ arch/mips/oprofile/op_model_mipsxx.c: In function ‘reset_counters’: arch/mips/oprofile/op_model_mipsxx.c:299:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfcntr3(0); ^~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:300:2: note: here case 3: ^~~~ arch/mips/oprofile/op_model_mipsxx.c:302:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfcntr2(0); ^~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:303:2: note: here case 2: ^~~~ arch/mips/oprofile/op_model_mipsxx.c:305:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfcntr1(0); ^~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:306:2: note: here case 1: ^~~~ arch/mips/oprofile/op_model_mipsxx.c: In function ‘mipsxx_perfcount_handler’: arch/mips/oprofile/op_model_mipsxx.c:242:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if ((control & MIPS_PERFCTRL_IE) && \ ^ arch/mips/oprofile/op_model_mipsxx.c:248:2: note: in expansion of macro ‘HANDLE_COUNTER’ HANDLE_COUNTER(3) ^~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:239:2: note: here case n + 1: \ ^ arch/mips/oprofile/op_model_mipsxx.c:249:2: note: in expansion of macro ‘HANDLE_COUNTER’ HANDLE_COUNTER(2) ^~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:242:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if ((control & MIPS_PERFCTRL_IE) && \ ^ arch/mips/oprofile/op_model_mipsxx.c:249:2: note: in expansion of macro ‘HANDLE_COUNTER’ HANDLE_COUNTER(2) ^~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:239:2: note: here case n + 1: \ ^ arch/mips/oprofile/op_model_mipsxx.c:250:2: note: in expansion of macro ‘HANDLE_COUNTER’ HANDLE_COUNTER(1) ^~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:242:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if ((control & MIPS_PERFCTRL_IE) && \ ^ arch/mips/oprofile/op_model_mipsxx.c:250:2: note: in expansion of macro ‘HANDLE_COUNTER’ HANDLE_COUNTER(1) ^~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:239:2: note: here case n + 1: \ ^ arch/mips/oprofile/op_model_mipsxx.c:251:2: note: in expansion of macro ‘HANDLE_COUNTER’ HANDLE_COUNTER(0) ^~~~~~~~~~~~~~ CC usr/include/linux/pmu.h.s arch/mips/oprofile/op_model_mipsxx.c: In function ‘mipsxx_cpu_setup’: arch/mips/oprofile/op_model_mipsxx.c:174:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfcntr3(reg.counter[3]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:175:2: note: here case 3: ^~~~ arch/mips/oprofile/op_model_mipsxx.c:177:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfcntr2(reg.counter[2]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:178:2: note: here case 2: ^~~~ arch/mips/oprofile/op_model_mipsxx.c:180:3: warning: this statement may fall through [-Wimplicit-fallthrough=] w_c0_perfcntr1(reg.counter[1]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/mips/oprofile/op_model_mipsxx.c:181:2: note: here case 1: ^~~~ Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Robert Richter <rric@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: oprofile-list@lists.sf.net Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Kees Cook <keescook@chromium.org>
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