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2022-10-19net: phy: dp83822: disable MDI crossover status change interruptFelix Riemann
If the cable is disconnected the PHY seems to toggle between MDI and MDI-X modes. With the MDI crossover status interrupt active this causes roughly 10 interrupts per second. As the crossover status isn't checked by the driver, the interrupt can be disabled to reduce the interrupt load. Fixes: 87461f7a58ab ("net: phy: DP83822 initial driver submission") Signed-off-by: Felix Riemann <felix.riemann@sma.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/20221018104755.30025-1-svc.sw.rte.linux@sma.de Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-10-19drm: Remove drm_mode_config::fb_baseZack Rusin
The fb_base in struct drm_mode_config has been unused for a long time. Some drivers set it and some don't leading to a very confusing state where the variable can't be relied upon, because there's no indication as to which driver sets it and which doesn't. The only usage of fb_base is internal to two drivers so instead of trying to force it into all the drivers to get it into a coherent state completely remove it. Signed-off-by: Zack Rusin <zackr@vmware.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Thomas Zimmermann <tzimemrmann@suse.de> Acked-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221019024401.394617-1-zack@kde.org
2022-10-19ublk_drv: use flexible-array member instead of zero-length arrayYushan Zhou
Eliminate the following coccicheck warning: ./drivers/block/ublk_drv.c:127:16-19: WARNING use flexible-array member instead Signed-off-by: Yushan Zhou <katrinzhou@tencent.com> Link: https://lore.kernel.org/r/20221018100132.355393-1-zys.zljxml@gmail.com Reviewed-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-10-19net: hns: fix possible memory leak in hnae_ae_register()Yang Yingliang
Inject fault while probing module, if device_register() fails, but the refcount of kobject is not decreased to 0, the name allocated in dev_set_name() is leaked. Fix this by calling put_device(), so that name can be freed in callback function kobject_cleanup(). unreferenced object 0xffff00c01aba2100 (size 128): comm "systemd-udevd", pid 1259, jiffies 4294903284 (age 294.152s) hex dump (first 32 bytes): 68 6e 61 65 30 00 00 00 18 21 ba 1a c0 00 ff ff hnae0....!...... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<0000000034783f26>] slab_post_alloc_hook+0xa0/0x3e0 [<00000000748188f2>] __kmem_cache_alloc_node+0x164/0x2b0 [<00000000ab0743e8>] __kmalloc_node_track_caller+0x6c/0x390 [<000000006c0ffb13>] kvasprintf+0x8c/0x118 [<00000000fa27bfe1>] kvasprintf_const+0x60/0xc8 [<0000000083e10ed7>] kobject_set_name_vargs+0x3c/0xc0 [<000000000b87affc>] dev_set_name+0x7c/0xa0 [<000000003fd8fe26>] hnae_ae_register+0xcc/0x190 [hnae] [<00000000fe97edc9>] hns_dsaf_ae_init+0x9c/0x108 [hns_dsaf] [<00000000c36ff1eb>] hns_dsaf_probe+0x548/0x748 [hns_dsaf] Fixes: 6fe6611ff275 ("net: add Hisilicon Network Subsystem hnae framework support") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Link: https://lore.kernel.org/r/20221018122451.1749171-1-yangyingliang@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-10-19wwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new()Yang Yingliang
Inject fault while probing module, if device_register() fails, but the refcount of kobject is not decreased to 0, the name allocated in dev_set_name() is leaked. Fix this by calling put_device(), so that name can be freed in callback function kobject_cleanup(). unreferenced object 0xffff88810152ad20 (size 8): comm "modprobe", pid 252, jiffies 4294849206 (age 22.713s) hex dump (first 8 bytes): 68 77 73 69 6d 30 00 ff hwsim0.. backtrace: [<000000009c3504ed>] __kmalloc_node_track_caller+0x44/0x1b0 [<00000000c0228a5e>] kvasprintf+0xb5/0x140 [<00000000cff8c21f>] kvasprintf_const+0x55/0x180 [<0000000055a1e073>] kobject_set_name_vargs+0x56/0x150 [<000000000a80b139>] dev_set_name+0xab/0xe0 Fixes: f36a111a74e7 ("wwan_hwsim: WWAN device simulator") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Loic Poulain <loic.poulain@linaro.org> Acked-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Link: https://lore.kernel.org/r/20221018131607.1901641-1-yangyingliang@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-10-19sfc: include vport_id in filter spec hash and equal()Pieter Jansen van Vuuren
Filters on different vports are qualified by different implicit MACs and/or VLANs, so shouldn't be considered equal even if their other match fields are identical. Fixes: 7c460d9be610 ("sfc: Extend and abstract efx_filter_spec to cover Huntington/EF10") Co-developed-by: Edward Cree <ecree.xilinx@gmail.com> Signed-off-by: Edward Cree <ecree.xilinx@gmail.com> Signed-off-by: Pieter Jansen van Vuuren <pieter.jansen-van-vuuren@amd.com> Reviewed-by: Martin Habets <habetsm.xilinx@gmail.com> Link: https://lore.kernel.org/r/20221018092841.32206-1-pieter.jansen-van-vuuren@amd.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-10-19i2c: qcom-cci: Fix ordering of pm_runtime_xx and i2c_add_adapterBryan O'Donoghue
When we compile-in the CCI along with the imx412 driver and run on the RB5 we see that i2c_add_adapter() causes the probe of the imx412 driver to happen. This probe tries to perform an i2c xfer() and the xfer() in i2c-qcom-cci.c fails on pm_runtime_get() because the i2c-qcom-cci.c::probe() function has not completed to pm_runtime_enable(dev). Fix this sequence by ensuring pm_runtime_xxx() calls happen prior to adding the i2c adapter. Fixes: e517526195de ("i2c: Add Qualcomm CCI I2C driver") Reported-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org> Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org> Tested-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org> Cc: <stable@vger.kernel.org> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Reviewed-by: Robert Foss <robert.foss@linaro.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
2022-10-19i2c: xiic: Add platform module aliasMartin Tůma
The missing "platform" alias is required for the mgb4 v4l2 driver to load the i2c controller driver when probing the HW. Signed-off-by: Martin Tůma <martin.tuma@digiteqautomotive.com> Acked-by: Michal Simek <michal.simek@amd.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
2022-10-19ACPI: scan: Fix DMA range assignmentRobin Murphy
Assigning the device's dma_range_map from the iterator variable after the loop means it always points to the empty terminator at the end of the map, which is not what we want. Similarly, freeing the iterator on error when it points to somwhere in the middle of the allocated array won't work either. Fix this. Fixes: bf2ee8d0c385 ("ACPI: scan: Support multiple DMA windows with different offsets") Signed-off-by: Robin Murphy <robin.murphy@arm.com> Reviewed-by: Jianmin Lv <lvjianmin@loongson.cn> Tested-by: Jeremy Linton <jeremy.linton@arm.com> Tested-by: Yicong Yang <yangyicong@hisilicon.com> Reviewed-by: Lorenzo Pieralisi <lpieralisi@kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Add support for live video inputLaurent Pinchart
Add partial live video support, with a single video input that bypasses blending. Skip registration of the DRM device in that case, but register the DRM bridge instead. The DRM device will be created by the driver for the display controller in the PL. Full live video mode with concurrent usage of the video and gfx inputs, and blending in the DPSUB video pipeline, is currently unsupported. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Support operation without DMA engineLaurent Pinchart
To prepare for usage of the DPSUB as a DisplayPort bridge without creating a DRM device, make initialization and usage of the DMA engine optional. The flag that controls this feature is currently hardcoded to operating with the DMA engine, this will be made dynamic based on the device tree configuration in a subsequent change. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Allow configuration of layer modeLaurent Pinchart
Add a mode parameter to the zynqmp_disp_layer_enable() to set the layer mode, to prepare for live mode support. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Parse DT to find connected portsLaurent Pinchart
To prepare for live video input support, parse the device tree to find the connected ports. Warn about unsupported configurations, and error out when invalid. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Rename zynqmp_dpsub_handle_vblank with DRM prefixLaurent Pinchart
The better convey its purpose, rename the zynqmp_dpsub_handle_vblank() function that belongs to the DRM layer to zynqmp_dpsub_drm_handle_vblank(). Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Decouple DRM device from zynqmp_dpsubLaurent Pinchart
To complete the decoupling of the DRM device from the zynqmp_dpsub, group all DRM-related structures in a zynqmp_dpsub_drm structure and allocate it separately from the zynqmp_dpsub. The DRM managed allocation of the drm_device now doesn't cover the zynqmp_dpsub anymore, so we need to register a cleanup action to release the zynqmp_dpsub when the drm_device is released. The will allow usage of the DisplayPort encoder as a standalone bridge, without registering a DRM device in this driver. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Move all DRM init and cleanup to zynqmp_kms.cLaurent Pinchart
Continue the isolation of DRM/KMS code by moving all DRM init and cleanup from zynqmp_dpsub.c to zynqmp_kms.c. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Manage DP and DISP allocations manuallyLaurent Pinchart
The zynqmp_disp and zynqmp_dp structures are allocated with drmm_kzalloc(). While this simplifies management of memory, it requires a DRM device, which will not be available at probe time when the DP bridge will be used standalone, with a DRM device in the PL. To prepare for this, switch to manual allocation for zynqmp_disp and zynqmp_dp. The cleanup still uses the DRM managed infrastructure, but one level up, at the top level. This will be addressed separately. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Move DP bridge init to zynqmp_dp_probe()Laurent Pinchart
There's no need to delay bridge initialization, move it to zynqmp_dp_probe() and drop the zynqmp_dp_drm_init() function. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Register AUX bus at bridge attach timeLaurent Pinchart
To prepare for operating as a standalone DP bridge with the DRM device implemented in the PL, move registration of the AUX bus to bridge attach time, as that's the earliest point when a DRM device is available. The DRM device pointer stored in zynqmp_dp isn't used anymore, drop it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Move planes handling to zynqmp_kms.cLaurent Pinchart
Decouple the planes handling from the display controller programming by moving the corresponding code from zynqmp_disp.c to zynqmp_kms.c. This prepares for using the DPSUB with a live video input, without creating DRM planes in the DPSUB driver. While at it, fix a typo in a comment. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Move CRTC handling to zynqmp_kms.cLaurent Pinchart
Decouple the CRTC handling from the display controller programming by moving the corresponding code from zynqmp_disp.c to zynqmp_kms.c. This prepares for using the DPSUB with a live video input, without creating a DRM CRTC in the DPSUB driver. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Move DRM/KMS initialization to separate fileLaurent Pinchart
Start preparation for using the DPSUB as a standalone DisplayPort encoder without a display controller by moving the DRM/KMS initialization to a new zynqmp_kms.c file. No functional change intended. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Move planes to zynqmp_dpsub structureLaurent Pinchart
Decouple the zynqmp_disp, which handles the hardware configuration, from the DRM planes by moving the planes to the zynqmp_dpsub structure. The planes handling code will be moved to a separate file in a subsequent step. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Move CRTC to zynqmp_dpsub structureLaurent Pinchart
Decouple the zynqmp_disp, which handles the hardware configuration, from the DRM CRTC by moving the CRTC to the zynqmp_dpsub structure. The CRTC handling code will be moved to a separate file in a subsequent step. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Move audio clk from zynqmp_disp to zynqmp_dpsubLaurent Pinchart
The audio clock is an external resource from the DPSUB point of view, not a resource internal to the display controller. Move it to the zynqmp_dpsub structure, to allow accessing it from outside the disp code. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Move pclk from zynqmp_disp to zynqmp_dpsubLaurent Pinchart
The video clock is an external resource from the DPSUB point of view, not a resource internal to the display controller. Move it to the zynqmp_dpsub structure, to allow accessing it from outside the disp code. While at it, rename the fields from pclk and pclk_from_ps to vid_clk and vid_clk_from_ps, to better reflect their purpose and match the documentation. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Don't use drmm_kcalloc() for temporary dataLaurent Pinchart
The array of formats passed to drm_universal_plane_init() doesn't need to outlive the function call, as it's copied internally. Use kcalloc() instead of drmm_kcalloc() to allocate it, and free it right after usage. While at it, move the allocation and initialization of the formats array to a separate function, to prepare for splitting the DRM plane handling to a separate file. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Remplace hardcoded values with ARRAY_SIZE()Laurent Pinchart
Use the ARRAY_SIZE() macro to iterate over arrays, instead of hardcoding their size. This makes the code less error-prone should the array size change. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Pass format info to zynqmp_disp_layer_set_format()Laurent Pinchart
The zynqmp_disp_layer_set_format() function only needs format information, not a full plane state. Get the necessary info from the plane state in the caller and pass it to zynqmp_disp_layer_set_format(). This prepares for calling the function from non-DRM code. This doesn't introduce any functional change. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Use local variable in zynqmp_disp_layer_update()Laurent Pinchart
Reuse the local info variable instead of going through the layer pointer in zynqmp_disp_layer_update(). This doesn't introduce any functional change. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Configure blender in zynqmp_disp_enable()Laurent Pinchart
To prepare for control of the blender outside of the CRTC code, move the setup of the blender to the zynqmp_disp_enable() function. This doesn't introduce any functional change. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Don't pass CRTC to zynqmp_disp_setup_clock()Laurent Pinchart
To prepare for usage of the clock setup function outside of the CRTC code, replace the DRM-specific structures passed as parameters with a pointer to the zynqmp_disp and the requested clock rate. This doesn't introduce any functional change. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Drop unused zynqmp_disp_format.bus_fmt fieldLaurent Pinchart
The bus_fmt field of the zynqmp_disp_format structure is unused. Drop it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Drop unused zynqmp_disp.event fieldLaurent Pinchart
The event field of the zynqmp_disp structure is unused. Drop it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Report HPD through the bridgeLaurent Pinchart
Now that the driver uses the connector bridge helper, HPD can be reported directly for the connector through the drm_bridge_hpd_notify() function. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Use DRM connector bridge helperLaurent Pinchart
Replace the manual connector implementation and registration in the DP encoder with the DRM connector bridge helper. This removes boilerplate code and simplifies the driver. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Attach to the next bridgeLaurent Pinchart
The next component in the display chain, after the DP encoder, is most likely a DP connector. The display connector driver registers a bridge for it. That bridge doesn't need to be controlled, but is needed in order to use the DRM connector bridge helper. Retrieve it at init time, and attach to it in the DP bridge attach handler. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Move encoder to DPSUB coreLaurent Pinchart
As part of the transitition of the DP encoder to a DRM bridge, turn the DRM encoder into a dummy encoder and move it out of the DP code, to the DPSUB core. DP encoder operations are handled by the DP bridge, which is now attached to the encoder. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Move connector registration to bridge attachLaurent Pinchart
Connector creation requires the DRM encoder, and it thus typically performed in the bridge attach operation. Move it there, to prepare for registration of the DRM bridge. For now the zynqmp_dp_bridge_attach() is called manually at initialization time. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Don't access connector in zynqmp_dp_set_format()Laurent Pinchart
To prepare for the removal of the connector from the DP encoder, pass the display info pointer to the zynqmp_dp_set_format() function instead of accessing the connector internally. The display info is NULL when the function is called at initialization time, as we have no display info at that point. This doesn't change the existing behaviour, given that the zynqmp_dp_set_format() was already handling this as a special case (the display info isn't initialized at init time and is all zeroes). Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Create DRM bridge to model DP encoderLaurent Pinchart
The DP encoder is currently modelled as a DRM encoder and DRM connector. This doesn't support system configurations where the DP encoder is driven by the FPGA programmable logic, using the live video input to the DP subsystem. To enable such use cases, we need to model the encoder as a DRM bridge. As a first step, create a DRM bridge in the DP encoder driver. Move and delegate the implementation of the DRM encoder and connector operations to the bridge to prepare for the transition. The bridge will be registered with the DRM core as a separate change. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Constify mode argument to functionLaurent Pinchart
The zynqmp_dp_encoder_mode_set_transfer_unit() function takes a mode pointer argument that it doesn't need to modify. Make it const. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19drm: xlnx: zynqmp_dpsub: Switch to atomic encoder enable/disableLaurent Pinchart
To prepare for the transition to the DRM bridge API, switch the encoder operations to the atomic versions of .enable() and .disable(). This doesn't cause any functional change by itself. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-10-19ethernet: marvell: octeontx2 Fix resource not freed after mallocManank Patel
fix rxsc and txsc not getting freed before going out of scope Fixes: c54ffc73601c ("octeontx2-pf: mcs: Introduce MACSEC hardware offloading") Signed-off-by: Manank Patel <pmanank200502@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-10-19ACPI: PCI: Fix device reference counting in acpi_get_pci_dev()Rafael J. Wysocki
Commit 63f534b8bad9 ("ACPI: PCI: Rework acpi_get_pci_dev()") failed to reference count the device returned by acpi_get_pci_dev() as expected by its callers which in some cases may cause device objects to be dropped prematurely. Add the missing get_device() to acpi_get_pci_dev(). Fixes: 63f534b8bad9 ("ACPI: PCI: Rework acpi_get_pci_dev()") Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-10-19drm/amdgpu: use DRM_SCHED_FENCE_DONT_PIPELINE for VM updatesChristian König
Make sure that we always have a CPU round trip to let the submission code correctly decide if a TLB flush is necessary or not. Signed-off-by: Christian König <christian.koenig@amd.com> Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2113#note_1579296 Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: Luben Tuikov <luben.tuikov@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221014081553.114899-2-christian.koenig@amd.com
2022-10-19nvmet: fix invalid memory reference in nvmet_subsys_attr_qid_max_showDaniel Wagner
The item passed into nvmet_subsys_attr_qid_max_show is not a member of struct nvmet_port, it is part of nvmet_subsys. Hence, don't try to dereference it as struct nvme_ctrl pointer. Fixes: 3e980f5995e0 ("nvmet: Expose max queues to configfs") Reported-by: Shinichiro Kawasaki <shinichiro.kawasaki@wdc.com> Link: https://lore.kernel.org/r/20220913064203.133536-1-dwagner@suse.de Signed-off-by: Daniel Wagner <dwagner@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Acked-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de>
2022-10-19nvmet: fix workqueue MEM_RECLAIM flushing dependencySagi Grimberg
The keep alive timer needs to stay on nvmet_wq, and not modified to reschedule on the system_wq. This fixes a warning: ------------[ cut here ]------------ workqueue: WQ_MEM_RECLAIM nvmet-wq:nvmet_rdma_release_queue_work [nvmet_rdma] is flushing !WQ_MEM_RECLAIM events:nvmet_keep_alive_timer [nvmet] WARNING: CPU: 3 PID: 1086 at kernel/workqueue.c:2628 check_flush_dependency+0x16c/0x1e0 Reported-by: Yi Zhang <yi.zhang@redhat.com> Fixes: 8832cf922151 ("nvmet: use a private workqueue instead of the system workqueue") Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2022-10-19nvme-hwmon: kmalloc the NVME SMART log bufferSerge Semin
Recent commit 52fde2c07da6 ("nvme: set dma alignment to dword") has caused a regression on our platform. It turned out that the nvme_get_log() method invocation caused the nvme_hwmon_data structure instance corruption. In particular the nvme_hwmon_data.ctrl pointer was overwritten either with zeros or with garbage. After some research we discovered that the problem happened even before the actual NVME DMA execution, but during the buffer mapping. Since our platform is DMA-noncoherent, the mapping implied the cache-line invalidations or write-backs depending on the DMA-direction parameter. In case of the NVME SMART log getting the DMA was performed from-device-to-memory, thus the cache-invalidation was activated during the buffer mapping. Since the log-buffer isn't cache-line aligned, the cache-invalidation caused the neighbour data to be discarded. The neighbouring data turned to be the data surrounding the buffer in the framework of the nvme_hwmon_data structure. In order to fix that we need to make sure that the whole log-buffer is defined within the cache-line-aligned memory region so the cache-invalidation procedure wouldn't involve the adjacent data. One of the option to guarantee that is to kmalloc the DMA-buffer [1]. Seeing the rest of the NVME core driver prefer that method it has been chosen to fix this problem too. Note after a deeper researches we found out that the denoted commit wasn't a root cause of the problem. It just revealed the invalidity by activating the DMA-based NVME SMART log getting performed in the framework of the NVME hwmon driver. The problem was here since the initial commit of the driver. [1] Documentation/core-api/dma-api-howto.rst Fixes: 400b6a7b13a3 ("nvme: Add hardware monitoring support") Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Signed-off-by: Christoph Hellwig <hch@lst.de>
2022-10-19nvme-hwmon: consistently ignore errors from nvme_hwmon_initChristoph Hellwig
An NVMe controller works perfectly fine even when the hwmon initialization fails. Stop returning errors that do not come from a controller reset from nvme_hwmon_init to handle this case consistently. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Serge Semin <fancer.lancer@gmail.com>