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2022-04-24Input: ep93xx_keypad - use devm_platform_ioremap_resource() helperLv Ruyi
Use the devm_platform_ioremap_resource() helper instead of calling platform_get_resource() and devm_ioremap_resource() separately. This makes the code simpler without functional changes. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn> Acked-by: Alexander Sverdlin <alexander.sverdlin@gmail.com> Link: https://lore.kernel.org/r/20220418015036.2556731-1-lv.ruyi@zte.com.cn Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-04-24Input: add Raspberry Pi Sense HAT joystick driverCharles Mirabile
This patch adds the driver for the Sense HAT joystick. It outputs BTN_DPAD key events when moved in any of the four directions and the BTN_SELECT event when depressed. Co-developed-by: Daniel Bauman <dbauman@redhat.com> Signed-off-by: Daniel Bauman <dbauman@redhat.com> Co-developed-by: Mwesigwa Guma <mguma@redhat.com> Signed-off-by: Mwesigwa Guma <mguma@redhat.com> Co-developed-by: Joel Savitz <jsavitz@redhat.com> Signed-off-by: Joel Savitz <jsavitz@redhat.com> Signed-off-by: Charles Mirabile <cmirabil@redhat.com> Link: https://lore.kernel.org/r/20220419205158.28088-3-cmirabil@redhat.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-04-24Input: clps711x-keypad - use syscon_regmap_lookup_by_phandleAlexander Shiyan
Since version 5.13, the standard syscon bindings have been added to all clps711x DT nodes, so we can now use the more general syscon_regmap_lookup_by_phandle function to get the syscon pointer. Signed-off-by: Alexander Shiyan <eagle.alexander923@gmail.com> Link: https://lore.kernel.org/r/20220420062725.25614-1-eagle.alexander923@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-04-24Input: remove unneeded variable in input_inhibit_device()Changcheng Deng
Remove unneeded variable used to store return value. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Changcheng Deng <deng.changcheng@zte.com.cn> Link: https://lore.kernel.org/r/20220419064255.2563333-1-deng.changcheng@zte.com.cn Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-04-20Input: aiptek - remove redundant assignment to variable retColin Ian King
Variable ret is being assigned a value that is never read, it is being re-assigned again in either path of the if statement. The assignment is redundant and can be removed. Cleans up clang scan build warning: Although the value stored to 'ret' is used in the enclosing expression, the value is never actually read from 'ret' [deadcode.DeadStores] Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Link: https://lore.kernel.org/r/20220418142457.84708-1-colin.i.king@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-04-17Input: iqs7222 - avoid dereferencing a NULL pointerJeff LaBundy
Select callers of iqs7222_parse_props() do not expect a child node to be derived and returned via pointer. As such, these callers set **child_node to NULL. However, this pointer is dereferenced in all cases. To solve this problem, dereference the pointer only for cases that expect a child node in the first place. In these cases, the caller provides a valid pointer. Fixes: e505edaedcb9 ("Input: add support for Azoteq IQS7222A/B/C") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jeff LaBundy <jeff@labundy.com> Link: https://lore.kernel.org/r/20220417214132.497487-1-jeff@labundy.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-04-17Input: iqs7222 - propagate some error codes correctlyDan Carpenter
If fwnode_property_count_u32() returns a negative error code then, because of type promotion, the "count > ARRAY_SIZE(pins)" condition will be true. The negative "count" is type promoted to a high unsigned size_t value. That means the "else if (count < 0)" condition will always be false and we don't print that error message or propagate the error code from fwnode_property_count_u32() as intended. Fix this by re-ordering the checks so that we check for negative first. Fixes: e505edaedcb9 ("Input: add support for Azoteq IQS7222A/B/C") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/20220412153954.GA15406@kili Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-04-08Input: add support for Azoteq IQS7222A/B/CJeff LaBundy
This patch adds support for the Azoteq IQS7222A/B/C family of capacitive touch controllers. Signed-off-by: Jeff LaBundy <jeff@labundy.com> Link: https://lore.kernel.org/r/20220403221659.865997-3-jeff@labundy.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-04-08dt-bindings: input: Add bindings for Azoteq IQS7222A/B/CJeff LaBundy
This patch adds bindings for the Azoteq IQS7222A/B/C family of capacitive touch controllers. Signed-off-by: Jeff LaBundy <jeff@labundy.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220403221659.865997-2-jeff@labundy.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-04-08Input: mt6779-keypad - move iomem pointer to probe functionAngeloGioacchino Del Regno
The mmio base address is used for the only purpose of initializing regmap for this driver, hence it's not necessary to have it in the main driver structure, as it is used only in the probe() callback. Move it local to function mt6779_keypad_pdrv_probe(). This commit brings no functional changes. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> Link: https://lore.kernel.org/r/20220406115654.115093-1-angelogioacchino.delregno@collabora.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-03-20Input: adi - remove redundant variable zColin Ian King
Variable z is being assigned a value that is never read, the variable is redundant and can be removed. Cleans up clang scan build warning: drivers/input/joystick/adi.c:139:6: warning: Although the value stored to 'z' is used in the enclosing expression, the value is never actually read from 'z' [deadcode.DeadStores] Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Link: https://lore.kernel.org/r/20220318002318.80519-1-colin.i.king@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-03-20Input: add Imagis touchscreen driverMarkuss Broks
Add support for the IST3038C touchscreen IC from Imagis, based on downstream driver. The driver supports multi-touch (10 touch points) The IST3038C IC supports touch keys, but the support isn't added because the touch screen used for testing doesn't utilize touch keys. Looking at the downstream driver, it is possible to add support for other Imagis ICs of IST30**C series. Reviewed-by: Jeff LaBundy <jeff@labundy.com> Signed-off-by: Markuss Broks <markuss.broks@gmail.com> Link: https://lore.kernel.org/r/20220305165330.13061-3-markuss.broks@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-03-20dt-bindings: input/touchscreen: bindings for ImagisMarkuss Broks
This patch adds device-tree bindings for the Imagis IST3038C touch screen IC. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Markuss Broks <markuss.broks@gmail.com> Link: https://lore.kernel.org/r/20220305165330.13061-2-markuss.broks@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-03-20Input: synaptics - enable InterTouch on ThinkPad T14/P14s Gen 1 AMDMatthew Haughton
Confirmed LEN2064 on my P14s works with psmouse.synaptics_intertouch=1 By all accounts T14 and P14s are the same hardware which only differ by model identifier. Signed-off-by: Matthew Haughton <snafu109@gmail.com> Link: https://lore.kernel.org/r/20220318113949.32722-1-snafu109@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-03-20Input: stmfts - fix reference leak in stmfts_input_openZheng Yongjun
pm_runtime_get_sync() will increment pm usage counter even it failed. Forgetting to call pm_runtime_put_noidle will result in reference leak in stmfts_input_open, so we should fix it. Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Link: https://lore.kernel.org/r/20220317131604.53538-1-zhengyongjun3@huawei.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-03-20Input: add bounds checking to input_set_capability()Jeff LaBundy
Update input_set_capability() to prevent kernel panic in case the event code exceeds the bitmap for the given event type. Suggested-by: Tomasz Moń <tomasz.mon@camlingroup.com> Signed-off-by: Jeff LaBundy <jeff@labundy.com> Reviewed-by: Tomasz Moń <tomasz.mon@camlingroup.com> Link: https://lore.kernel.org/r/20220320032537.545250-1-jeff@labundy.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-03-20Input: iqs5xx - use local input_dev pointerJeff LaBundy
Both iqs5xx_axis_init() and iqs5xx_irq() already define a local input_dev pointer 'input'. Use this instead of iqs5xx->input so as to make the code a bit smaller. Signed-off-by: Jeff LaBundy <jeff@labundy.com> Link: https://lore.kernel.org/r/20220320025707.404544-1-jeff@labundy.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-03-14HID: google: modify HID device groups of eelZhengqiao Xia
If HID_GROUP of eel is set to HID_GROUP_GENERIC, Whiskers Tablet Mode Switch of eel hammer will not be detected by system because the hid-vivaldi driver probes the device. When it is set to HID_GROUP_VIVALDI, system will detect Whiskers Tablet Mode Switch successfully and also support the vivaldi keyboard layout. Tested-by: "Sean O'Brien" <seobrien@chromium.org> Acked-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Zhengqiao Xia <xiazhengqiao@huaqin.corp-partner.google.com> [swboyd@chromium.org: Expand on commit text] Signed-off-by: Stephen Boyd <swboyd@chromium.org> Tested-by: Stephen Boyd <swboyd@chromium.org> # coachz, wormdingler Link: https://lore.kernel.org/r/20220228075446.466016-6-dmitry.torokhov@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-03-14HID: google: Add support for vivaldi to hid-hammerStephen Boyd
Add support to the hammer driver to parse vivaldi keyboard layouts and expose them to userspace. This allows hammer devices to use vivaldi function row keys while also supporting the other features this driver supports, like the CBAS (chrome base attached switch) and a keyboard backlight. Signed-off-by: Stephen Boyd <swboyd@chromium.org> Tested-by: Stephen Boyd <swboyd@chromium.org> # coachz, wormdingler Link: https://lore.kernel.org/r/20220228075446.466016-5-dmitry.torokhov@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-03-14HID: google: extract Vivaldi hid feature mapping for use in hid-hammerStephen Boyd
We need to support parsing the HID device in both the Vivaldi and the Hammer drivers so that we can properly expose the function row physmap to userspace when a hammer device uses a vivaldi keyboard layout for the function row keys. Extract the feature mapping logic from the vivaldi driver into an hid specific vivaldi library so we can use it from both HID drivers. To allow more code sharing we mandate that vivaldi data must be placed at the very beginning of the driver data attached to the HID device instance. Signed-off-by: Stephen Boyd <swboyd@chromium.org> Tested-by: Stephen Boyd <swboyd@chromium.org> # coachz, wormdingler Link: https://lore.kernel.org/r/20220228075446.466016-4-dmitry.torokhov@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-03-14Input: extract ChromeOS vivaldi physmap show functionStephen Boyd
Let's introduce a common library file for the physmap show function duplicated between three different keyboard drivers. This largely copies the code from cros_ec_keyb.c which has the most recent version of the show function, while using the vivaldi_data struct from the hid-vivaldi driver. This saves a small amount of space in an allyesconfig build. $ ./scripts/bloat-o-meter vmlinux.before vmlinux.after add/remove: 3/0 grow/shrink: 2/3 up/down: 412/-720 (-308) Function old new delta vivaldi_function_row_physmap_show - 292 +292 _sub_I_65535_1 1057564 1057616 +52 _sub_D_65535_0 1057564 1057616 +52 e843419@49f2_00062737_9b04 - 8 +8 e843419@20f6_0002a34d_35bc - 8 +8 atkbd_parse_fwnode_data 480 472 -8 atkbd_do_show_function_row_physmap 316 76 -240 function_row_physmap_show 620 148 -472 Total: Before=285581925, After=285581617, chg -0.00% Signed-off-by: Stephen Boyd <swboyd@chromium.org> Tested-by: Stephen Boyd <swboyd@chromium.org> # coachz, wormdingler Link: https://lore.kernel.org/r/20220228075446.466016-3-dmitry.torokhov@gmail.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-03-14HID: google: switch to devm when registering keyboard backlight LEDDmitry Torokhov
We can use devm to register keyboard backlight LED on hammer devices, this will allow us to use HID's driver data for something else later. Link: https://lore.kernel.org/r/20220228075446.466016-2-dmitry.torokhov@gmail.com Tested-by: Stephen Boyd <swboyd@chromium.org> # coachz, wormdingler Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-03-14Merge tag 'v5.17-rc8' into nextDmitry Torokhov
Sync up with mainline to again get the latest changes in HID subsystem.
2022-03-14Input: mt6779-keypad - fix signedness bugLv Ruyi (CGEL ZTE)
The irq variable is defined as unsigned int. If the platform_get_irq() returns a negative value, data type cast may result in error. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Lv Ruyi (CGEL ZTE) <lv.ruyi@zte.com.cn> Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> Link: https://lore.kernel.org/r/20220308025054.2077162-1-lv.ruyi@zte.com.cn Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-03-13Linux 5.17-rc8v5.17-rc8Linus Torvalds
2022-03-13Merge tag 'x86_urgent_for_v5.17_rc8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Borislav Petkov: - Free shmem backing storage for SGX enclave pages when those are swapped back into EPC memory - Prevent do_int3() from being kprobed, to avoid recursion - Remap setup_data and setup_indirect structures properly when accessing their members - Correct the alternatives patching order for modules too * tag 'x86_urgent_for_v5.17_rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/sgx: Free backing memory after faulting the enclave page x86/traps: Mark do_int3() NOKPROBE_SYMBOL x86/boot: Add setup_indirect support in early_memremap_is_setup_data() x86/boot: Fix memremap of setup_indirect structures x86/module: Fix the paravirt vs alternative order
2022-03-12Merge tag 'perf-tools-fixes-for-v5.17-2022-03-12' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull perf tools fixes from Arnaldo Carvalho de Melo: - Fix event parser error for hybrid systems - Fix NULL check against wrong variable in 'perf bench' and in the parsing code - Update arm64 KVM headers from the kernel sources - Sync cpufeatures header with the kernel sources * tag 'perf-tools-fixes-for-v5.17-2022-03-12' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: perf parse: Fix event parser error for hybrid systems perf bench: Fix NULL check against wrong variable perf parse-events: Fix NULL check against wrong variable tools headers cpufeatures: Sync with the kernel sources tools kvm headers arm64: Update KVM headers from the kernel sources
2022-03-12Merge tag 'drm-fixes-2022-03-12' of git://anongit.freedesktop.org/drm/drmLinus Torvalds
Pull drm kconfig fix from Dave Airlie: "Thorsten pointed out this had fallen down the cracks and was in -next only, I've picked it out, fixed up it's Fixes: line. - fix regression in Kconfig" * tag 'drm-fixes-2022-03-12' of git://anongit.freedesktop.org/drm/drm: drm/panel: Select DRM_DP_HELPER for DRM_PANEL_EDP
2022-03-12perf parse: Fix event parser error for hybrid systemsZhengjun Xing
This bug happened on hybrid systems when both cpu_core and cpu_atom have the same event name such as "UOPS_RETIRED.MS" while their event terms are different, then during perf stat, the event for cpu_atom will parse fail and then no output for cpu_atom. UOPS_RETIRED.MS -> cpu_core/period=0x1e8483,umask=0x4,event=0xc2,frontend=0x8/ UOPS_RETIRED.MS -> cpu_atom/period=0x1e8483,umask=0x1,event=0xc2/ It is because event terms in the "head" of parse_events_multi_pmu_add will be changed to event terms for cpu_core after parsing UOPS_RETIRED.MS for cpu_core, then when parsing the same event for cpu_atom, it still uses the event terms for cpu_core, but event terms for cpu_atom are different with cpu_core, the event parses for cpu_atom will fail. This patch fixes it, the event terms should be parsed from the original event. This patch can work for the hybrid systems that have the same event in more than 2 PMUs. It also can work in non-hybrid systems. Before: # perf stat -v -e UOPS_RETIRED.MS -a sleep 1 Using CPUID GenuineIntel-6-97-1 UOPS_RETIRED.MS -> cpu_core/period=0x1e8483,umask=0x4,event=0xc2,frontend=0x8/ Control descriptor is not initialized UOPS_RETIRED.MS: 2737845 16068518485 16068518485 Performance counter stats for 'system wide': 2,737,845 cpu_core/UOPS_RETIRED.MS/ 1.002553850 seconds time elapsed After: # perf stat -v -e UOPS_RETIRED.MS -a sleep 1 Using CPUID GenuineIntel-6-97-1 UOPS_RETIRED.MS -> cpu_core/period=0x1e8483,umask=0x4,event=0xc2,frontend=0x8/ UOPS_RETIRED.MS -> cpu_atom/period=0x1e8483,umask=0x1,event=0xc2/ Control descriptor is not initialized UOPS_RETIRED.MS: 1977555 16076950711 16076950711 UOPS_RETIRED.MS: 568684 8038694234 8038694234 Performance counter stats for 'system wide': 1,977,555 cpu_core/UOPS_RETIRED.MS/ 568,684 cpu_atom/UOPS_RETIRED.MS/ 1.004758259 seconds time elapsed Fixes: fb0811535e92c6c1 ("perf parse-events: Allow config on kernel PMU events") Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Zhengjun Xing <zhengjun.xing@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20220307151627.30049-1-zhengjun.xing@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-03-12perf bench: Fix NULL check against wrong variableWeiguo Li
We did a NULL check after "epollfdp = calloc(...)", but we checked "epollfd" instead of "epollfdp". Signed-off-by: Weiguo Li <liwg06@foxmail.com> Acked-by: Davidlohr Bueso <dave@stgolabs.net> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/tencent_B5D64530EB9C7DBB8D2C88A0C790F1489D0A@qq.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-03-12perf parse-events: Fix NULL check against wrong variableWeiguo Li
We did a null check after "tmp->symbol = strdup(...)", but we checked "list->symbol" other than "tmp->symbol". Reviewed-by: John Garry <john.garry@huawei.com> Signed-off-by: Weiguo Li <liwg06@foxmail.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/tencent_DF39269807EC9425E24787E6DB632441A405@qq.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-03-12tools headers cpufeatures: Sync with the kernel sourcesArnaldo Carvalho de Melo
To pick the changes from: d45476d983240937 ("x86/speculation: Rename RETPOLINE_AMD to RETPOLINE_LFENCE") Its just a comment fixup. This only causes these perf files to be rebuilt: CC /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o CC /tmp/build/perf/bench/mem-memset-x86-64-asm.o And addresses this perf build warning: Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h' diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h Cc: Borislav Petkov <bp@suse.de> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/lkml/YiyiHatGaJQM7l/Y@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-03-12tools kvm headers arm64: Update KVM headers from the kernel sourcesArnaldo Carvalho de Melo
To pick the changes from: a5905d6af492ee6a ("KVM: arm64: Allow SMCCC_ARCH_WORKAROUND_3 to be discovered and migrated") That don't causes any changes in tooling (when built on x86), only addresses this perf build warning: Warning: Kernel ABI header at 'tools/arch/arm64/include/uapi/asm/kvm.h' differs from latest version at 'arch/arm64/include/uapi/asm/kvm.h' diff -u tools/arch/arm64/include/uapi/asm/kvm.h arch/arm64/include/uapi/asm/kvm.h Cc: James Morse <james.morse@arm.com> Link: https://lore.kernel.org/lkml/YiyhAK6sVPc83FaI@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-03-12drm/panel: Select DRM_DP_HELPER for DRM_PANEL_EDPThomas Zimmermann
As reported in [1], DRM_PANEL_EDP depends on DRM_DP_HELPER. Select the option to fix the build failure. The error message is shown below. arm-linux-gnueabihf-ld: drivers/gpu/drm/panel/panel-edp.o: in function `panel_edp_probe': panel-edp.c:(.text+0xb74): undefined reference to `drm_panel_dp_aux_backlight' make[1]: *** [/builds/linux/Makefile:1222: vmlinux] Error 1 The issue has been reported before, when DisplayPort helpers were hidden behind the option CONFIG_DRM_KMS_HELPER. [2] v2: * fix and expand commit description (Arnd) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Fixes: 9d6366e743f3 ("drm: fb_helper: improve CONFIG_FB dependency") Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://lore.kernel.org/dri-devel/CA+G9fYvN0NyaVkRQmA1O6rX7H8PPaZrUAD7=RDy33QY9rUU-9g@mail.gmail.com/ # [1] Link: https://lore.kernel.org/all/20211117062704.14671-1-rdunlap@infradead.org/ # [2] Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Lyude Paul <lyude@redhat.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: dri-devel@lists.freedesktop.org Link: https://patchwork.freedesktop.org/patch/msgid/20220203093922.20754-1-tzimmermann@suse.de Signed-off-by: Dave Airlie <airlied@redhat.com>
2022-03-11ARM: Spectre-BHB: provide empty stub for non-configRandy Dunlap
When CONFIG_GENERIC_CPU_VULNERABILITIES is not set, references to spectre_v2_update_state() cause a build error, so provide an empty stub for that function when the Kconfig option is not set. Fixes this build error: arm-linux-gnueabi-ld: arch/arm/mm/proc-v7-bugs.o: in function `cpu_v7_bugs_init': proc-v7-bugs.c:(.text+0x52): undefined reference to `spectre_v2_update_state' arm-linux-gnueabi-ld: proc-v7-bugs.c:(.text+0x82): undefined reference to `spectre_v2_update_state' Fixes: b9baf5c8c5c3 ("ARM: Spectre-BHB workaround") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: kernel test robot <lkp@intel.com> Cc: Russell King <rmk+kernel@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: linux-arm-kernel@lists.infradead.org Cc: patches@armlinux.org.uk Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-11Merge tag 'riscv-for-linus-5.17-rc8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V fixes from Palmer Dabbelt: - prevent users from enabling the alternatives framework (and thus errata handling) on XIP kernels, where runtime code patching does not function correctly. - properly detect offset overflow for AUIPC-based relocations in modules. This may manifest as modules calling arbitrary invalid addresses, depending on the address allocated when a module is loaded. * tag 'riscv-for-linus-5.17-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: Fix auipc+jalr relocation range checks riscv: alternative only works on !XIP_KERNEL
2022-03-11Merge tag 'powerpc-5.17-6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fix from Michael Ellerman: "Fix STACKTRACE=n build, in particular for skiroot_defconfig" * tag 'powerpc-5.17-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc: Fix STACKTRACE=n build
2022-03-11ARM: fix Thumb2 regression with Spectre BHBRussell King (Oracle)
When building for Thumb2, the vectors make use of a local label. Sadly, the Spectre BHB code also uses a local label with the same number which results in the Thumb2 reference pointing at the wrong place. Fix this by changing the number used for the Spectre BHB local label. Fixes: b9baf5c8c5c3 ("ARM: Spectre-BHB workaround") Tested-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-11Merge tag 'mmc-v5.17-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc Pull MMC fixes from Ulf Hansson: "MMC core: - Restore (mostly) the busy polling for MMC_SEND_OP_COND MMC host: - meson-gx: Fix DMA usage of meson_mmc_post_req()" * tag 'mmc-v5.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: mmc: core: Restore (almost) the busy polling for MMC_SEND_OP_COND mmc: meson: Fix usage of meson_mmc_post_req()
2022-03-11x86/sgx: Free backing memory after faulting the enclave pageJarkko Sakkinen
There is a limited amount of SGX memory (EPC) on each system. When that memory is used up, SGX has its own swapping mechanism which is similar in concept but totally separate from the core mm/* code. Instead of swapping to disk, SGX swaps from EPC to normal RAM. That normal RAM comes from a shared memory pseudo-file and can itself be swapped by the core mm code. There is a hierarchy like this: EPC <-> shmem <-> disk After data is swapped back in from shmem to EPC, the shmem backing storage needs to be freed. Currently, the backing shmem is not freed. This effectively wastes the shmem while the enclave is running. The memory is recovered when the enclave is destroyed and the backing storage freed. Sort this out by freeing memory with shmem_truncate_range(), as soon as a page is faulted back to the EPC. In addition, free the memory for PCMD pages as soon as all PCMD's in a page have been marked as unused by zeroing its contents. Cc: stable@vger.kernel.org Fixes: 1728ab54b4be ("x86/sgx: Add a page reclaimer") Reported-by: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Link: https://lkml.kernel.org/r/20220303223859.273187-1-jarkko@kernel.org
2022-03-11Merge branch 'davidh' (fixes from David Howells)Linus Torvalds
Merge misc fixes from David Howells: "A set of patches for watch_queue filter issues noted by Jann. I've added in a cleanup patch from Christophe Jaillet to convert to using formal bitmap specifiers for the note allocation bitmap. Also two filesystem fixes (afs and cachefiles)" * emailed patches from David Howells <dhowells@redhat.com>: cachefiles: Fix volume coherency attribute afs: Fix potential thrashing in afs writeback watch_queue: Make comment about setting ->defunct more accurate watch_queue: Fix lack of barrier/sync/lock between post and read watch_queue: Free the alloc bitmap when the watch_queue is torn down watch_queue: Fix the alloc bitmap size to reflect notes allocated watch_queue: Use the bitmap API when applicable watch_queue: Fix to always request a pow-of-2 pipe ring size watch_queue: Fix to release page in ->release() watch_queue, pipe: Free watchqueue state after clearing pipe ring watch_queue: Fix filter limit check
2022-03-11cachefiles: Fix volume coherency attributeDavid Howells
A network filesystem may set coherency data on a volume cookie, and if given, cachefiles will store this in an xattr on the directory in the cache corresponding to the volume. The function that sets the xattr just stores the contents of the volume coherency buffer directly into the xattr, with nothing added; the checking function, on the other hand, has a cut'n'paste error whereby it tries to interpret the xattr contents as would be the xattr on an ordinary file (using the cachefiles_xattr struct). This results in a failure to match the coherency data because the buffer ends up being shifted by 18 bytes. Fix this by defining a structure specifically for the volume xattr and making both the setting and checking functions use it. Since the volume coherency doesn't work if used, take the opportunity to insert a reserved field for future use, set it to 0 and check that it is 0. Log mismatch through the appropriate tracepoint. Note that this only affects cifs; 9p, afs, ceph and nfs don't use the volume coherency data at the moment. Fixes: 32e150037dce ("fscache, cachefiles: Store the volume coherency data") Reported-by: Rohith Surabattula <rohiths.msft@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: Steve French <smfrench@gmail.com> cc: linux-cifs@vger.kernel.org cc: linux-cachefs@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-11afs: Fix potential thrashing in afs writebackDavid Howells
In afs_writepages_region(), if the dirty page we find is undergoing writeback or write to cache, but the sync_mode is WB_SYNC_NONE, we go round the loop trying the same page again and again with no pausing or waiting unless and until another thread manages to clear the writeback and fscache flags. Fix this with three measures: (1) Advance start to after the page we found. (2) Break out of the loop and return if rescheduling is requested. (3) Arbitrarily give up after a maximum of 5 skips. Fixes: 31143d5d515e ("AFS: implement basic file write support") Reported-by: Marc Dionne <marc.dionne@auristor.com> Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Marc Dionne <marc.dionne@auristor.com> Acked-by: Marc Dionne <marc.dionne@auristor.com> Link: https://lore.kernel.org/r/164692725757.2097000.2060513769492301854.stgit@warthog.procyon.org.uk/ # v1 Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-11x86/traps: Mark do_int3() NOKPROBE_SYMBOLLi Huafei
Since kprobe_int3_handler() is called in do_int3(), probing do_int3() can cause a breakpoint recursion and crash the kernel. Therefore, do_int3() should be marked as NOKPROBE_SYMBOL. Fixes: 21e28290b317 ("x86/traps: Split int3 handler up") Signed-off-by: Li Huafei <lihuafei1@huawei.com> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20220310120915.63349-1-lihuafei1@huawei.com
2022-03-11watch_queue: Make comment about setting ->defunct more accurateDavid Howells
watch_queue_clear() has a comment stating that setting ->defunct to true preventing new additions as well as preventing notifications. Whilst the latter is true, the first bit is superfluous since at the time this function is called, the pipe cannot be accessed to add new event sources. Remove the "new additions" bit from the comment. Fixes: c73be61cede5 ("pipe: Add general notification queue support") Reported-by: Jann Horn <jannh@google.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-11watch_queue: Fix lack of barrier/sync/lock between post and readDavid Howells
There's nothing to synchronise post_one_notification() versus pipe_read(). Whilst posting is done under pipe->rd_wait.lock, the reader only takes pipe->mutex which cannot bar notification posting as that may need to be made from contexts that cannot sleep. Fix this by setting pipe->head with a barrier in post_one_notification() and reading pipe->head with a barrier in pipe_read(). If that's not sufficient, the rd_wait.lock will need to be taken, possibly in a ->confirm() op so that it only applies to notifications. The lock would, however, have to be dropped before copy_page_to_iter() is invoked. Fixes: c73be61cede5 ("pipe: Add general notification queue support") Reported-by: Jann Horn <jannh@google.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-11watch_queue: Free the alloc bitmap when the watch_queue is torn downDavid Howells
Free the watch_queue note allocation bitmap when the watch_queue is destroyed. Fixes: c73be61cede5 ("pipe: Add general notification queue support") Reported-by: Jann Horn <jannh@google.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-11watch_queue: Fix the alloc bitmap size to reflect notes allocatedDavid Howells
Currently, watch_queue_set_size() sets the number of notes available in wqueue->nr_notes according to the number of notes allocated, but sets the size of the bitmap to the unrounded number of notes originally asked for. Fix this by setting the bitmap size to the number of notes we're actually going to make available (ie. the number allocated). Fixes: c73be61cede5 ("pipe: Add general notification queue support") Reported-by: Jann Horn <jannh@google.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-11watch_queue: Use the bitmap API when applicableChristophe JAILLET
Use bitmap_alloc() to simplify code, improve the semantic and reduce some open-coded arithmetic in allocator arguments. Also change a memset(0xff) into an equivalent bitmap_fill() to keep consistency. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-11watch_queue: Fix to always request a pow-of-2 pipe ring sizeDavid Howells
The pipe ring size must always be a power of 2 as the head and tail pointers are masked off by AND'ing with the size of the ring - 1. watch_queue_set_size(), however, lets you specify any number of notes between 1 and 511. This number is passed through to pipe_resize_ring() without checking/forcing its alignment. Fix this by rounding the number of slots required up to the nearest power of two. The request is meant to guarantee that at least that many notifications can be generated before the queue is full, so rounding down isn't an option, but, alternatively, it may be better to give an error if we aren't allowed to allocate that much ring space. Fixes: c73be61cede5 ("pipe: Add general notification queue support") Reported-by: Jann Horn <jannh@google.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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