- Apr 17, 2021
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Randy Dunlap authored
Fix IA64 discontig.c Section mismatch warnings. When CONFIG_SPARSEMEM=y and CONFIG_MEMORY_HOTPLUG=y, the functions computer_pernodesize() and scatter_node_data() should not be marked as __meminit because they are needed after init, on any memory hotplug event. Also, early_nr_cpus_node() is called by compute_pernodesize(), so early_nr_cpus_node() cannot be __meminit either. WARNING: modpost: vmlinux.o(.text.unlikely+0x1612): Section mismatch in reference from the function arch_alloc_nodedata() to the function .meminit.text:compute_pernodesize() The function arch_alloc_nodedata() references the function __meminit compute_pernodesize(). This is often because arch_alloc_nodedata lacks a __meminit annotation or the annotation of compute_pernodesize is wrong. WARNING: modpost: vmlinux.o(.text.unlikely+0x1692): Section mismatch in reference from the function arch_refresh_nodedata() to the function .meminit.text:scatter_node_data() The function arch_refresh_nodedata() references the function __meminit scatter_node_data(). This is often because arch_refresh_nodedata lacks a __meminit annotation or the annotation of scatter_node_data is wrong. WARNING: modpost: vmlinux.o(.text.unlikely+0x1502): Section mismatch in reference from the function compute_pernodesize() to the function .meminit.text:early_nr_cpus_node() The function compute_pernodesize() references the function __meminit early_nr_cpus_node(). This is often because compute_pernodesize lacks a __meminit annotation or the annotation of early_nr_cpus_node is wrong. Link: https://lkml.kernel.org/r/20210411001201.3069-1-rdunlap@infradead.org Signed-off-by:
Randy Dunlap <rdunlap@infradead.org> Cc: Mike Rapoport <rppt@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Randy Dunlap authored
Fix ia64 generic_defconfig duplicate entries, as warned by: arch/ia64/configs/generic_defconfig: warning: override: reassigning to symbol ATA: => 58 arch/ia64/configs/generic_defconfig: warning: override: reassigning to symbol ATA_PIIX: => 59 These 2 symbols still have the same value as in the removed lines. Link: https://lkml.kernel.org/r/20210411020255.18052-1-rdunlap@infradead.org Fixes: c331649e ("ia64: Use libata instead of the legacy ide driver in defconfigs") Signed-off-by:
Randy Dunlap <rdunlap@infradead.org> Reported-by:
Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by:
Christoph Hellwig <hch@lst.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Randy Dunlap authored
e1000's #define of CONFIG_RAM_BASE conflicts with a Kconfig symbol in arch/csky/Kconfig. The symbol in e1000 has been around longer, so change arch/csky/ to use DRAM_BASE instead of RAM_BASE to remove the conflict. (although e1000 is also a 2-line change) Link: https://lkml.kernel.org/r/20210411055335.7111-1-rdunlap@infradead.org Signed-off-by:
Randy Dunlap <rdunlap@infradead.org> Reported-by:
kernel test robot <lkp@intel.com> Acked-by:
Guo Ren <guoren@kernel.org> Cc: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Walter Wu authored
CONFIG_KASAN_STACK and CONFIG_KASAN_STACK_ENABLE both enable KASAN stack instrumentation, but we should only need one config, so that we remove CONFIG_KASAN_STACK_ENABLE and make CONFIG_KASAN_STACK workable. see [1]. When enable KASAN stack instrumentation, then for gcc we could do no prompt and default value y, and for clang prompt and default value n. This patch fixes the following compilation warning: include/linux/kasan.h:333:30: warning: 'CONFIG_KASAN_STACK' is not defined, evaluates to 0 [-Wundef] [akpm@linux-foundation.org: fix merge snafu] Link: https://bugzilla.kernel.org/show_bug.cgi?id=210221 [1] Link: https://lkml.kernel.org/r/20210226012531.29231-1-walter-zh.wu@mediatek.com Fixes: d9b571c8 ("kasan: fix KASAN_STACK dependency for HW_TAGS") Signed-off-by:
Walter Wu <walter-zh.wu@mediatek.com> Suggested-by:
Dmitry Vyukov <dvyukov@google.com> Reviewed-by:
Nathan Chancellor <natechancellor@gmail.com> Acked-by:
Arnd Bergmann <arnd@arndb.de> Reviewed...
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Arnd Bergmann authored
gcc-11 adds support for -fsanitize=kernel-hwaddress, so it becomes possible to enable CONFIG_KASAN_SW_TAGS. Unfortunately this fails to build at the moment, because the corresponding command line arguments use llvm specific syntax. Change it to use the cc-param macro instead, which works on both clang and gcc. [elver@google.com: fixup for "kasan: fix hwasan build for gcc"] Link: https://lkml.kernel.org/r/YHQZVfVVLE/LDK2v@elver.google.com Link: https://lkml.kernel.org/r/20210323124112.1229772-1-arnd@kernel.org Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
Marco Elver <elver@google.com> Reviewed-by:
Marco Elver <elver@google.com> Acked-by:
Andrey Konovalov <andreyknvl@gmail.com> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Michal Marek <michal.lkml@markovi.net> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Randy Dunlap authored
Fix stray kernel-doc warnings in mm/ due to mis-typed or missing function names. Quietens these kernel-doc warnings: mm/mmu_gather.c:264: warning: expecting prototype for tlb_gather_mmu(). Prototype was for __tlb_gather_mmu() instead mm/oom_kill.c:180: warning: expecting prototype for Check whether unreclaimable slab amount is greater than(). Prototype was for should_dump_unreclaim_slab() instead mm/shuffle.c:155: warning: expecting prototype for shuffle_free_memory(). Prototype was for __shuffle_free_memory() instead Link: https://lkml.kernel.org/r/20210411210642.11362-1-rdunlap@infradead.org Signed-off-by:
Randy Dunlap <rdunlap@infradead.org> Reviewed-by:
Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fix from Catalin Marinas: "Fix kernel compilation when using the LLVM integrated assembly. A recent commit (2decad92, "arm64: mte: Ensure TIF_MTE_ASYNC_FAULT is set atomically") broke the kernel build when using the LLVM integrated assembly (only noticeable with clang-12 as MTE is not supported by earlier versions and the code in question not compiled). The Fixes: tag in the commit refers to the original patch introducing subsections for the alternative code sequences" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: alternatives: Move length validation in alternative_{insn, endif}
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- Apr 16, 2021
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git://anongit.freedesktop.org/drm/drmLinus Torvalds authored
Pull drm fixes from Daniel Vetter: "I pinged the usual suspects, only intel fixes pending" * tag 'drm-fixes-2021-04-16' of git://anongit.freedesktop.org/drm/drm: drm/i915/display/vlv_dsi: Do not skip panel_pwr_cycle_delay when disabling the panel drm/i915: Don't zero out the Y plane's watermarks drm/i915/dpcd_bl: Don't try vesa interface unless specified by VBT
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull ACPI fix from Rafael Wysocki: "Restore the initrd-based ACPI table override functionality broken by one of the recent fixes" * tag 'acpi-5.12-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI: x86: Call acpi_boot_table_init() after acpi_table_upgrade()
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git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linuxLinus Torvalds authored
Pull gpio fix from Bartosz Golaszewski: "A single fix for an older problem with the sysfs interface: do not allow exporting GPIO lines which were marked invalid by the driver" * tag 'gpio-fixes-for-v5.12-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: gpio: sysfs: Obey valid_mask
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git://git.kernel.org/pub/scm/linux/kernel/git/hid/hidLinus Torvalds authored
Pull HID fixes from Jiri Kosina: "The changes are all device/driver specific fixes: - EV_KEY and EV_ABS regression fix for Wacom from Ping Cheng - BIOS-specific quirk to fix some of the AMD_SFH-based systems, from Hans de Goede - other small error handling fixes and device ID additions" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: HID: wacom: set EV_KEY and EV_ABS only for non-HID_GENERIC type of devices AMD_SFH: Add DMI quirk table for BIOS-es which don't set the activestatus bits AMD_SFH: Add sensor_mask module parameter AMD_SFH: Removed unused activecontrolstatus member from the amd_mp2_dev struct HID: wacom: Assign boolean values to a bool variable HID cp2112: fix support for multiple gpiochips HID: alps: fix error return code in alps_input_configured() HID: asus: Add support for 2021 ASUS N-Key keyboard HID: google: add don USB id
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Nathan Chancellor authored
After commit 2decad92 ("arm64: mte: Ensure TIF_MTE_ASYNC_FAULT is set atomically"), LLVM's integrated assembler fails to build entry.S: <instantiation>:5:7: error: expected assembly-time absolute expression .org . - (664b-663b) + (662b-661b) ^ <instantiation>:6:7: error: expected assembly-time absolute expression .org . - (662b-661b) + (664b-663b) ^ The root cause is LLVM's assembler has a one-pass design, meaning it cannot figure out these instruction lengths when the .org directive is outside of the subsection that they are in, which was changed by the .arch_extension directive added in the above commit. Apply the same fix from commit 966a0acc ("arm64/alternatives: move length validation inside the subsection") to the alternative_endif macro, shuffling the .org directives so that the length validation happen will always happen in the same subsections. alternative_insn has not shown any issue yet but it appears that it could have the same issue in the future so just preemptively change it. Fixes: f7b93d42 ("arm64/alternatives: use subsections for replacement sequences") Cc: <stable@vger.kernel.org> # 5.8.x Link: https://github.com/ClangBuiltLinux/linux/issues/1347 Signed-off-by:
Nathan Chancellor <nathan@kernel.org> Reviewed-by:
Sami Tolvanen <samitolvanen@google.com> Tested-by:
Sami Tolvanen <samitolvanen@google.com> Reviewed-by:
Nick Desaulniers <ndesaulniers@google.com> Tested-by:
Nick Desaulniers <ndesaulniers@google.com> Link: https://lore.kernel.org/r/20210414000803.662534-1-nathan@kernel.org Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/inputLinus Torvalds authored
Pull input fixes from Dmitry Torokhov: "Just a few driver fixes here" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: elants_i2c - drop zero-checking of ABS_MT_TOUCH_MAJOR resolution Input: elants_i2c - fix division by zero if firmware reports zero phys size Input: nspire-keypad - enable interrupts only when opened Input: i8042 - fix Pegatron C15B ID entry Input: n64joy - fix return value check in n64joy_probe() Input: s6sy761 - fix coordinate read bit shift
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- Apr 15, 2021
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Daniel Vetter authored
Merge tag 'drm-intel-fixes-2021-04-15' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes Display panel & power related fixes: - Backlight fix (Lyude) - Display watermark fix (Ville) - VLV panel power fix (Hans) Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> From: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/YHg4nz/ndzDRmPjd@intel.com
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Linus Torvalds authored
Merge tag 'for-5.12/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper fix from Mike Snitzer: "Fix DM verity target FEC support's RS roots IO to always be aligned. This fixes a previous stable@ fix that overcorrected for a different configuration that also resulted in misaligned roots IO" * tag 'for-5.12/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm verity fec: fix misaligned RS roots IO
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Jaegeuk Kim authored
commit df7b59ba ("dm verity: fix FEC for RS roots unaligned to block size") introduced the possibility for misaligned roots IO relative to the underlying device's logical block size. E.g. Android's default RS roots=2 results in dm_bufio->block_size=1024, which causes the following EIO if the logical block size of the device is 4096, given v->data_dev_block_bits=12: E sd 0 : 0:0:0: [sda] tag#30 request not aligned to the logical block size E blk_update_request: I/O error, dev sda, sector 10368424 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 E device-mapper: verity-fec: 254:8: FEC 9244672: parity read failed (block 18056): -5 Fix this by onlu using f->roots for dm_bufio blocksize IFF it is aligned to v->data_dev_block_bits. Fixes: df7b59ba ("dm verity: fix FEC for RS roots unaligned to block size") Cc: stable@vger.kernel.org Signed-off-by:
Jaegeuk Kim <jaegeuk@google.com> Signed-off-by:
Mike Snitzer <snitzer@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linuxLinus Torvalds authored
Pull s390 fixes from Heiko Carstens: - setup stack backchain properly in external and i/o interrupt handler to fix stack unwinding. This broke when converting to generic entry - save caller address of psw_idle to get a sane stacktrace * tag 's390-5.12-7' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/entry: save the caller of psw_idle s390/entry: avoid setting up backchain in ext|io handlers
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fixes from Will Deacon: - Fix incorrect asm constraint for load_unaligned_zeropad() fixup - Fix thread flag update when setting TIF_MTE_ASYNC_FAULT - Fix restored irq state when handling fault on kprobe * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: kprobes: Restore local irqflag if kprobes is cancelled arm64: mte: Ensure TIF_MTE_ASYNC_FAULT is set atomically arm64: fix inline asm in load_unaligned_zeropad()
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git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengineLinus Torvalds authored
Pull dmaengine fixes from Vinod Koul: "A couple of dmaengine driver fixes for: - race and descriptor issue for xilinx driver - fix interrupt handling, wq state & cleanup, field sizes for completion, msix permissions for idxd driver - runtime pm fix for tegra driver - double free fix in dma_async_device_register" * tag 'dmaengine-fix-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: dmaengine: idxd: fix wq cleanup of WQCFG registers dmaengine: idxd: clear MSIX permission entry on shutdown dmaengine: plx_dma: add a missing put_device() on error path dmaengine: tegra20: Fix runtime PM imbalance on error dmaengine: Fix a double free in dma_async_device_register dmaengine: dw: Make it dependent to HAS_IOMEM dmaengine: idxd: fix wq size store permission state dmaengine: idxd: fix opcap sysfs attribute output dmaengine: idxd: fix delta_rec and crc size field for completion record dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback dmaengine: xilinx: dpdma: Fix race condition in done IRQ dmaengine: xilinx: dpdma: Fix descriptor issuing on video group
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git://github.com/awilliam/linux-vfioLinus Torvalds authored
Pull VFIO fix from Alex Williamson: "Verify mmap region within range (Christian A. Ehrhardt)" * tag 'vfio-v5.12-rc8' of git://github.com/awilliam/linux-vfio: vfio/pci: Add missing range check in vfio_pci_mmap
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- Apr 14, 2021
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull kvm fix from Paolo Bonzini: "Fix for a possible out-of-bounds access" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: VMX: Don't use vcpu->run->internal.ndata as an array index
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-traceLinus Torvalds authored
Pull tracing fix from Steven Rostedt: "Fix a memory link in dyn_event_release(). An error path exited the function before freeing the allocated 'argv' variable" * tag 'trace-v5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing/dynevent: Fix a memory leak in an error handling path
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Reiji Watanabe authored
__vmx_handle_exit() uses vcpu->run->internal.ndata as an index for an array access. Since vcpu->run is (can be) mapped to a user address space with a writer permission, the 'ndata' could be updated by the user process at anytime (the user process can set it to outside the bounds of the array). So, it is not safe that __vmx_handle_exit() uses the 'ndata' that way. Fixes: 1aa561b1 ("kvm: x86: Add "last CPU" to some KVM_EXIT information") Signed-off-by:
Reiji Watanabe <reijiw@google.com> Reviewed-by:
Jim Mattson <jmattson@google.com> Message-Id: <20210413154739.490299-1-reijiw@google.com> Cc: stable@vger.kernel.org Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linuxLinus Torvalds authored
Pull MTD fix from Richard Weinberger: "Fix WAITRDY break condition and timeout in mtk nand driver" * tag 'fixes-for-5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: mtd: rawnand: mtk: Fix WAITRDY break condition and timeout
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Christophe JAILLET authored
We must free 'argv' before returning, as already done in all the other paths of this function. Link: https://lkml.kernel.org/r/21e3594ccd7fc88c5c162c98450409190f304327.1618136448.git.christophe.jaillet@wanadoo.fr Fixes: d262271d ("tracing/dynevent: Delegate parsing to create function") Acked-by:
Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by:
Steven Rostedt (VMware) <rostedt@goodmis.org>
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- Apr 13, 2021
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Christian A. Ehrhardt authored
When mmaping an extra device region verify that the region index derived from the mmap offset is valid. Fixes: a15b1883 ("vfio_pci: Allow mapping extra regions") Cc: stable@vger.kernel.org Signed-off-by:
Christian A. Ehrhardt <lk@c--e.de> Message-Id: <20210412214124.GA241759@lisa.in-ulm.de> Reviewed-by:
David Gibson <david@gibson.dropbear.id.au> Reviewed-by:
Cornelia Huck <cohuck@redhat.com> Signed-off-by:
Alex Williamson <alex.williamson@redhat.com>
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Rafael J. Wysocki authored
Commit 1a1c130a ("ACPI: tables: x86: Reserve memory occupied by ACPI tables") attempted to address an issue with reserving the memory occupied by ACPI tables, but it broke the initrd-based table override mechanism relied on by multiple users. To restore the initrd-based ACPI table override functionality, move the acpi_boot_table_init() invocation in setup_arch() on x86 after the acpi_table_upgrade() one. Fixes: 1a1c130a ("ACPI: tables: x86: Reserve memory occupied by ACPI tables") Reported-by:
Hans de Goede <hdegoede@redhat.com> Tested-by:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Jisheng Zhang authored
If instruction being single stepped caused a page fault, the kprobes is cancelled to let the page fault handler continue as a normal page fault. But the local irqflags are disabled so cpu will restore pstate with DAIF masked. After pagefault is serviced, the kprobes is triggerred again, we overwrite the saved_irqflag by calling kprobes_save_local_irqflag(). NOTE, DAIF is masked in this new saved irqflag. After kprobes is serviced, the cpu pstate is retored with DAIF masked. This patch is inspired by one patch for riscv from Liao Chang. Signed-off-by:
Jisheng Zhang <Jisheng.Zhang@synaptics.com> Acked-by:
Masami Hiramatsu <mhiramat@kernel.org> Link: https://lore.kernel.org/r/20210412174101.6bfb0594@xhacker.debian Signed-off-by:
Will Deacon <will@kernel.org>
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Dave Jiang authored
A pre-release silicon erratum workaround where wq reset does not clear WQCFG registers was leaked into upstream code. Use wq reset command instead of blasting the MMIO region. This also address an issue where we clobber registers in future devices. Fixes: da32b28c ("dmaengine: idxd: cleanup workqueue config after disabling") Reported-by:
Shreenivaas Devarajan <shreenivaas.devarajan@intel.com> Signed-off-by:
Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/161824330020.881560.16375921906426627033.stgit@djiang5-desk3.ch.intel.com Signed-off-by:
Vinod Koul <vkoul@kernel.org>
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Dave Jiang authored
Add disabling/clearing of MSIX permission entries on device shutdown to mirror the enabling of the MSIX entries on probe. Current code left the MSIX enabled and the pasid entries still programmed at device shutdown. Fixes: 8e50d392 ("dmaengine: idxd: Add shared workqueue support") Signed-off-by:
Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/161824457969.882533.6020239898682672311.stgit@djiang5-desk3.ch.intel.com Signed-off-by:
Vinod Koul <vkoul@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommuLinus Torvalds authored
Pull m68knommu fix from Greg Ungerer: "Some m68k platforms with a non-zero memory base fail to boot with the recent flatmem changes. This is a single regression fix to the pfn offset for that case" * tag 'm68knommu-for-v5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68k: fix flatmem memory model setup
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- Apr 12, 2021
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Catalin Marinas authored
The entry from EL0 code checks the TFSRE0_EL1 register for any asynchronous tag check faults in user space and sets the TIF_MTE_ASYNC_FAULT flag. This is not done atomically, potentially racing with another CPU calling set_tsk_thread_flag(). Replace the non-atomic ORR+STR with an STSET instruction. While STSET requires ARMv8.1 and an assembler that understands LSE atomics, the MTE feature is part of ARMv8.5 and already requires an updated assembler. Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com> Fixes: 637ec831 ("arm64: mte: Handle synchronous and asynchronous tag check faults") Cc: <stable@vger.kernel.org> # 5.10.x Reported-by:
Will Deacon <will@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20210409173710.18582-1-catalin.marinas@arm.com Signed-off-by:
Will Deacon <will@kernel.org>
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Hans de Goede authored
After the recently added commit fe0f1e3b ("drm/i915: Shut down displays gracefully on reboot"), the DSI panel on a Cherry Trail based Predia Basic tablet would no longer properly light up after reboot. I've managed to reproduce this without rebooting by doing: chvt 3; echo 1 > /sys/class/graphics/fb0/blank;\ echo 0 > /sys/class/graphics/fb0/blank Which rapidly turns the panel off and back on again. The vlv_dsi.c code uses an intel_dsi_msleep() helper for the various delays used for panel on/off, since starting with MIPI-sequences version >= 3 the delays are already included inside the MIPI-sequences. The problems exposed by the "Shut down displays gracefully on reboot" change, show that using this helper for the panel_pwr_cycle_delay is not the right thing to do. This has not been noticed until now because normally the panel never is cycled off and directly on again in quick succession. Change the msleep for the panel_pwr_cycle_delay to a normal msleep() call to avoid the panel staying black after a quick off + on cycle. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Fixes: fe0f1e3b ("drm/i915: Shut down displays gracefully on reboot") Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Reviewed-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210325114823.44922-1-hdegoede@redhat.com (cherry picked from commit 2878b29f ) Signed-off-by:
Rodrigo Vivi <rodrigo.vivi@intel.com>
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Ville Syrjälä authored
Don't zero out the watermarks for the Y plane since we've already computed them when computing the UV plane's watermarks (since the UV plane always appears before ethe Y plane when iterating through the planes). This leads to allocating no DDB for the Y plane since .min_ddb_alloc also gets zeroed. And that of course leads to underruns when scanning out planar formats. Cc: stable@vger.kernel.org Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com> Fixes: dbf71381 ("drm/i915: Nuke intel_atomic_crtc_state_for_each_plane_state() from skl+ wm code") Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210327005945.4929-1-ville.syrjala@linux.intel.com Reviewed-by:
Stanislav Lisovskiy <stanislav.lisovskiy@intel.com> (cherry picked from commit f99b805f ) Signed-off-by:
Rodrigo Vivi <rodrigo.vivi@intel.com>
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Lyude Paul authored
Looks like that there actually are another subset of laptops on the market that don't support the Intel HDR backlight interface, but do advertise support for the VESA DPCD backlight interface despite the fact it doesn't seem to work. Note though I'm not entirely clear on this - on one of the machines where this issue was observed, I also noticed that we appeared to be rejecting the VBT defined backlight frequency in intel_dp_aux_vesa_calc_max_backlight(). It's noted in this function that: /* Use highest possible value of Pn for more granularity of brightness * adjustment while satifying the conditions below. * ... * - FxP is within 25% of desired value. * Note: 25% is arbitrary value and may need some tweak. */ So it's possible that this value might just need to be tweaked, but for now let's just disable the VESA backlight interface unless it's specified in the VBT just to be safe. We might be able to try enabling this again by default in the future. Fixes: 2227816e ("drm/i915/dp: Allow forcing specific interfaces through enable_dpcd_backlight") Cc: Jani Nikula <jani.nikula@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Bugzilla: https://gitlab.freedesktop.org/drm/intel/-/issues/3169 Signed-off-by:
Lyude Paul <lyude@redhat.com> Reviewed-by:
Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210318170204.513000-1-lyude@redhat.com (cherry picked from commit 9e2eb6d5 ) Signed-off-by:
Rodrigo Vivi <rodrigo.vivi@intel.com>
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Vasily Gorbik authored
Currently psw_idle does not allocate a stack frame and does not save its r14 and r15 into the save area. Even though this is valid from call ABI point of view, because psw_idle does not make any calls explicitly, in reality psw_idle is an entry point for controlled transition into serving interrupts. So, in practice, psw_idle stack frame is analyzed during stack unwinding. Depending on build options that r14 slot in the save area of psw_idle might either contain a value saved by previous sibling call or complete garbage. [task 0000038000003c28] do_ext_irq+0xd6/0x160 [task 0000038000003c78] ext_int_handler+0xba/0xe8 [task *0000038000003dd8] psw_idle_exit+0x0/0x8 <-- pt_regs ([task 0000038000003dd8] 0x0) [task 0000038000003e10] default_idle_call+0x42/0x148 [task 0000038000003e30] do_idle+0xce/0x160 [task 0000038000003e70] cpu_startup_entry+0x36/0x40 [task 0000038000003ea0] arch_call_rest_init+0x76/0x80 So, to make a stacktrace nicer and actually point for the real caller of psw_idle in this frequently occurring case, make psw_idle save its r14. [task 0000038000003c28] do_ext_irq+0xd6/0x160 [task 0000038000003c78] ext_int_handler+0xba/0xe8 [task *0000038000003dd8] psw_idle_exit+0x0/0x6 <-- pt_regs ([task 0000038000003dd8] arch_cpu_idle+0x3c/0xd0) [task 0000038000003e10] default_idle_call+0x42/0x148 [task 0000038000003e30] do_idle+0xce/0x160 [task 0000038000003e70] cpu_startup_entry+0x36/0x40 [task 0000038000003ea0] arch_call_rest_init+0x76/0x80 Reviewed-by:
Sven Schnelle <svens@linux.ibm.com> Signed-off-by:
Vasily Gorbik <gor@linux.ibm.com> Signed-off-by:
Heiko Carstens <hca@linux.ibm.com>
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Vasily Gorbik authored
Currently when interrupt arrives to cpu while in kernel context INT_HANDLER macro (used for ext_int_handler and io_int_handler) allocates new stack frame and pt_regs on the kernel stack and sets up the backchain to jump over the pt_regs to the frame which has been interrupted. This is not ideal to two reasons: 1. This hides the fact that kernel stack contains interrupt frame in it and hence breaks arch_stack_walk_reliable(), which needs to know that to guarantee "reliability" and checks that there are no pt_regs on the way. 2. It breaks the backchain unwinder logic, which assumes that the next stack frame after an interrupt frame is reliable, while it is not. In some cases (when r14 contains garbage) this leads to early unwinding termination with an error, instead of marking frame as unreliable and continuing. To address that, only set backchain to 0. Fixes: 56e62a73 ("s390: convert to generic entry") Reviewed-by:
Sven Schnelle <svens@linux.ibm.com> Signed-off-by:
Vasily Gorbik <gor@linux.ibm.com> Signed-off-by:
Heiko Carstens <hca@linux.ibm.com>
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Dan Carpenter authored
Add a missing put_device(&pdev->dev) if the call to dma_async_device_register(dma); fails. Fixes: 905ca51e ("dmaengine: plx-dma: Introduce PLX DMA engine PCI driver skeleton") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by:
Logan Gunthorpe <logang@deltatee.com> Link: https://lore.kernel.org/r/YFnq/0IQzixtAbC1@mwanda Signed-off-by:
Vinod Koul <vkoul@kernel.org>
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Dinghao Liu authored
pm_runtime_get_sync() will increase the runtime PM counter even it returns an error. Thus a pairing decrement is needed to prevent refcount leak. Fix this by replacing this API with pm_runtime_resume_and_get(), which will not change the runtime PM counter on error. Signed-off-by:
Dinghao Liu <dinghao.liu@zju.edu.cn> Acked-by:
Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20210409082805.23643-1-dinghao.liu@zju.edu.cn Signed-off-by:
Vinod Koul <vkoul@kernel.org>
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Lv Yunlong authored
In the first list_for_each_entry() macro of dma_async_device_register, it gets the chan from list and calls __dma_async_device_channel_register (..,chan). We can see that chan->local is allocated by alloc_percpu() and it is freed chan->local by free_percpu(chan->local) when __dma_async_device_channel_register() failed. But after __dma_async_device_channel_register() failed, the caller will goto err_out and freed the chan->local in the second time by free_percpu(). The cause of this problem is forget to set chan->local to NULL when chan->local was freed in __dma_async_device_channel_register(). My patch sets chan->local to NULL when the callee failed to avoid double free. Fixes: d2fb0a04 ("dmaengine: break out channel registration") Signed-off-by:
Lv Yunlong <lyl2019@mail.ustc.edu.cn> Reviewed-by:
Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/20210331014458.3944-1-lyl2019@mail.ustc.edu.cn Signed-off-by:
Vinod Koul <vkoul@kernel.org>
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