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2021-08-16PCI: rcar: Add L1 link state fix into data abort hookMarek Vasut2-0/+93
When the link is in L1, hardware should return it to L0 automatically whenever a transaction targets a component on the other end of the link (PCIe r5.0, sec 5.2). The R-Car PCIe controller doesn't handle this transition correctly. If the link is not in L0, an MMIO transaction targeting a downstream device fails, and the controller reports an ARM imprecise external abort. Work around this by hooking the abort handler so the driver can detect this situation and help the hardware complete the link state transition. When the R-Car controller receives a PM_ENTER_L1 DLLP from the downstream component, it sets PMEL1RX bit in PMSR register, but then the controller enters some sort of in-between state. A subsequent MMIO transaction will fail, resulting in the external abort. The abort handler detects this condition and completes the link state transition by setting the L1IATN bit in PMCTLR and waiting for the link state transition to complete. Link: https://lore.kernel.org/r/20210815181650.132579-1-marek.vasut@gmail.com Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Wolfram Sang <wsa@the-dreams.de> Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Cc: linux-renesas-soc@vger.kernel.org
2021-08-16drm/imx: ipuv3-plane: fix accidental partial revert of 8 pixel alignment fixPhilipp Zabel1-1/+1
This fixes an accidental partial revert of commit 94dfec48fca7 ("drm/imx: Add 8 pixel alignment fix") during a rebase of commit fc1e985b67f9 ("drm/imx: ipuv3-plane: add color encoding and range properties"). Fixes: fc1e985b67f9 ("drm/imx: ipuv3-plane: add color encoding and range properties") Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Link: https://lore.kernel.org/r/20210816131728.30987-1-p.zabel@pengutronix.de Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2021-08-16gpu: ipu-v3: Fix i.MX IPU-v3 offset calculations for (semi)planar U/V formatsKrzysztof Hałasa1-15/+15
Video captured in 1400x1050 resolution (bytesperline aka stride = 1408 bytes) is invalid. Fix it. Signed-off-by: Krzysztof Halasa <khalasa@piap.pl> Link: https://lore.kernel.org/r/m3y2bmq7a4.fsf@t19.piap.pl [p.zabel@pengutronix.de: added "gpu: ipu-v3:" prefix to commit description] Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2021-08-16bonding: improve nl error msg when device can't be enslaved because of IFF_MASTERAntoine Tenart1-1/+1
Use a more user friendly netlink error message when a device can't be enslaved because it has IFF_MASTER, by not referring directly to a kernel internal flag. Signed-off-by: Antoine Tenart <atenart@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-16mfd: ti_am335x_tscadc: Delete superfluous error messageTang Bin1-3/+2
In the function ti_tscadc_probe(), when get irq failed, platform_get_irq() logs an error message, so remove redundant message here. Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-08-16mfd: tqmx86: Assume 24MHz LPC clock for unknown boardsMatthias Schiffer1-3/+5
All future TQMx86 modules should use a 24MHz LPC clock. Warn about unknown boards, but assume this is the case. Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-08-16mfd: tqmx86: Add support for TQ-Systems DMI IDsMatthias Schiffer1-0/+8
Newer TQMx86 modules use TQ-Systems instead of TQ-Group as their vendor ID. Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-08-16mfd: tqmx86: Add support for TQMx110EB and TQMxE40xMatthias Schiffer1-0/+20
Add the board IDs for the TQMx110EB and the TQMxE40x family. All use a 24MHz LPC clock. Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-08-16mfd: tqmx86: Fix typo in "platform"Matthias Schiffer1-4/+4
Rename variable from "ocores_platfom_data" to "ocores_platform_data". Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-08-16mfd: tqmx86: Remove incorrect TQMx90UC board IDMatthias Schiffer1-4/+0
No TQMx90UC exists at the moment, and it is undecided whether ID 10 will be used eventually (and if it is, how that SoM will be named). Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-08-16mfd: tqmx86: Clear GPIO IRQ resource when no IRQ is setMatthias Schiffer1-0/+2
The driver was registering IRQ 0 when no IRQ was set. This leads to warnings with newer kernels. Clear the resource flags, so no resource is registered at all in this case. Fixes: 2f17dd34ffed ("mfd: tqmx86: IO controller with I2C, Wachdog and GPIO") Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-08-16power: reset: Add TPS65086 restart driverEmil Renner Berthing3-0/+105
The only way to reset the BeagleV Starlight v0.9 board[1] properly is to tell the PMIC to reset itself which will then assert the external reset lines of the SoC, USB hub and ethernet phy. This adds a driver to register a reset handler to do just that. [1] https://github.com/beagleboard/beaglev-starlight Signed-off-by: Emil Renner Berthing <kernel@esmil.dk> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2021-08-16mfd: simple-mfd-i2c: Add support for registering devices via MFD cellsLee Jones2-8/+65
More devices are cropping up requiring only Regmap initialisation and child registration functionality. We currently only support that if all required devices are represented by their own Device Tree nodes complete with compatible strings. However, not everyone is happy with adding empty nodes that provide no additional device information into the Device Tree. Rather than have a plethora of mostly empty, function-less drivers in MFD, we'll support those simple cases in here instead via MFD cells. Cc: Mark Brown <broonie@kernel.org> Tested-by: Michael Walle <michael@walle.cc> Reviewed-by: Alistair Francis <alistair@alistair23.me> Tested-by: Alistair Francis <alistair@alistair23.me> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-08-16drm/ttm: Include pagemap.h from ttm_tt.hJason Ekstrand1-1/+0
It's needed for pgprot_t which is used in the header. Signed-off-by: Jason Ekstrand <jason@jlekstrand.net> Cc: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210812203443.1725307-2-jason@jlekstrand.net Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com>
2021-08-16mfd/cpuidle: ux500: Rename driver symbolLinus Walleij2-3/+2
The PRCMU driver defines this as a DT node but there are no bindings for it and it needs no data from the device tree. Just spawn the device directly in the same way as the watchdog. Name it "db8500-cpuidle" since there are no ambitions to support any more SoCs than this one. This rids this annoying boot message: [ 0.032610] cpuidle-dbx500: Failed to locate of_node [id: 0] However I think the device still spawns and work just fine, despite not finding a device tree node. Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: linux-pm@vger.kernel.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-08-16nvmet: check that host sqsize does not exceed ctrl MQESAmit Engel1-0/+9
Check that host sqsize is not greater-than Maximum Queue Entries Supported (MQES) value supported by the controller. Signed-off-by: Amit Engel <amit.engel@dell.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16nvmet: avoid duplicate qid in connect cmdAmit Engel2-6/+15
According to the NVMe specification, if the host sends a Connect command specifying a queue id which has already been created, a status value of NVME_SC_CMD_SEQ_ERROR is returned. Signed-off-by: Amit Engel <amit.engel@dell.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16nvmet: pass back cntlid on successful completionAmit Engel1-4/+5
According to the NVMe specification, the response dword 0 value of the Connect command is based on status code: return cntlid for successful compeltion return IPO and IATTR for connect invalid parameters. Fix a missing error information for a zero sized queue, and return the cntlid also for I/O queue Connect commands. Signed-off-by: Amit Engel <amit.engel@dell.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16nvme-rdma: don't update queue count when failing to set io queuesRuozhu Li1-2/+2
We update ctrl->queue_count and schedule another reconnect when io queue count is zero.But we will never try to create any io queue in next reco- nnection, because ctrl->queue_count already set to zero.We will end up having an admin-only session in Live state, which is exactly what we try to avoid in the original patch. Update ctrl->queue_count after queue_count zero checking to fix it. Signed-off-by: Ruozhu Li <liruozhu@huawei.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16nvme-tcp: don't update queue count when failing to set io queuesRuozhu Li1-2/+2
We update ctrl->queue_count and schedule another reconnect when io queue count is zero.But we will never try to create any io queue in next reco- nnection, because ctrl->queue_count already set to zero.We will end up having an admin-only session in Live state, which is exactly what we try to avoid in the original patch. Update ctrl->queue_count after queue_count zero checking to fix it. Signed-off-by: Ruozhu Li <liruozhu@huawei.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16nvme-tcp: pair send_mutex init with destroyKeith Busch1-0/+2
Each mutex_init() should have a corresponding mutex_destroy(). Signed-off-by: Keith Busch <kbusch@kernel.org> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16nvme: allow user toggling hmb usageKeith Busch1-1/+44
The NVMe host memory buffer may consume a non-negligable amount of memory. Controllers are required to function without the host memory buffer enabled, but with possibly degraded performance. Export a sysfs property to toggle this feature on a per-device granularity so users may choose to reclaim memory at the expense of storage performance. Signed-off-by: Keith Busch <kbusch@kernel.org> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16nvme-pci: disable hmb on idle suspendKeith Busch1-7/+17
An idle suspend may or may not disable host memory access from devices placed in low power mode. Either way, it should always be safe to disable the host memory buffer prior to entering the low power mode, and this should also always be faster than a full device shutdown. Signed-off-by: Keith Busch <kbusch@kernel.org> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16nvmet: remove redundant assignments of variable statusColin Ian King1-4/+1
There are two occurrances where variable status is being assigned a value that is never read and it is being re-assigned a new value almost immediately afterwards on an error exit path. The assignments are redundant and can be removed. Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16nvmet: add set feature tracing supportHou Pu1-1/+17
A nvme connect command produces following trace from the target side. Before: kworker/0:1H-56 [000] .... 9012.155139: nvmet_req_init: nvmet1: qid=0, cmdid=16, nsid=0, flags=0x40, meta=0x0, cmd=(nvme_admin_set_features, cdw10=07 00 00 00 07 00 07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) kworker/0:1H-56 [000] .... 9012.872272: nvmet_req_init: nvmet1: qid=0, cmdid=13, nsid=0, flags=0x40, meta=0x0, cmd=(nvme_admin_set_features, cdw10=0b 00 00 00 00 09 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) cmdline:/sys/kernel/debug/tracing# cat trace | grep feature kworker/0:1H-56 [000] .... 203.493914: nvmet_req_init: nvmet1: qid=0, cmdid=29, nsid=0, flags=0x40, meta=0x0, cmd=(nvme_admin_set_features, fid=0x7, sv=0x0, cdw11=0x70007) kworker/0:1H-56 [000] .... 204.197079: nvmet_req_init: nvmet1: qid=0, cmdid=29, nsid=0, flags=0x40, meta=0x0, cmd=(nvme_admin_set_features, fid=0xb, sv=0x0, cdw11=0x900) Using ',' to separate different field like others in nvmet_trace_admin_get_features. Signed-off-by: Hou Pu <houpu.main@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16nvme: add set feature tracing supportHou Pu1-1/+17
A nvme connect command produces following trace. Before: /sys/kernel/debug/tracing# cat trace | grep feature kworker/5:1H-98 [005] .... 3221.294844: nvme_setup_cmd: nvme0: qid=0, cmdid=25, nsid=0, flags=0x0, meta=0x0, cmd=(nvme_admin_set_features cdw10=07 00 00 00 07 00 07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) kworker/4:1H-124 [004] .... 3222.009186: nvme_setup_cmd: nvme0: qid=0, cmdid=17, nsid=0, flags=0x0, meta=0x0, cmd=(nvme_admin_set_features cdw10=0b 00 00 00 00 09 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00) After: /sys/kernel/debug/tracing# cat trace | grep feature kworker/0:1H-253 [000] .... 196.060509: nvme_setup_cmd: nvme0: qid=0, cmdid=29, nsid=0, flags=0x0, meta=0x0, cmd=(nvme_admin_set_features fid=0x7, sv=0x0, cdw11=0x70007) kworker/0:1H-253 [000] .... 196.763947: nvme_setup_cmd: nvme0: qid=0, cmdid=29, nsid=0, flags=0x0, meta=0x0, cmd=(nvme_admin_set_features fid=0xb, sv=0x0, cdw11=0x900) Using ',' to separate different field like others in nvmet_trace_admin_get_features. Signed-off-by: Hou Pu <houpu.main@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16nvme-fabrics: remove superfluous nvmf_host_put in nvmf_parse_optionsHou Pu1-1/+0
Opts->host is NULL there. It is checked just before. So remove nvmf_host_put. It is introduced by commit 59a2f3f00fd7 ("nvme: fix potential memory leak in option parsing"). Signed-off-by: Hou Pu <houpu.main@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16nvme-pci: cmb sysfs: one file, one valueKeith Busch1-2/+26
An attribute should only be exporting one value as recommended in Documentation/filesystems/sysfs.rst. Implement CMB attributes this way. The old attribute will remain for backward compatibility. Signed-off-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16nvme-pci: use attribute group for cmb sysfsKeith Busch1-26/+46
Appending sysfs files to the controller kobject is a bit clunky and becomes a maintenance problem as more attributes are added. The attribute group infrastructure handles this better, so use that. Signed-off-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16nvme: code command_id with a genctr for use-after-free validationSagi Grimberg6-20/+66
We cannot detect a (perhaps buggy) controller that is sending us a completion for a request that was already completed (for example sending a completion twice), this phenomenon was seen in the wild a few times. So to protect against this, we use the upper 4 msbits of the nvme sqe command_id to use as a 4-bit generation counter and verify it matches the existing request generation that is incrementing on every execution. The 16-bit command_id structure now is constructed by: | xxxx | xxxxxxxxxxxx | gen request tag This means that we are giving up some possible queue depth as 12 bits allow for a maximum queue depth of 4095 instead of 65536, however we never create such long queues anyways so no real harm done. Suggested-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Acked-by: Keith Busch <kbusch@kernel.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Daniel Wagner <dwagner@suse.de> Tested-by: Daniel Wagner <dwagner@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16nvme-tcp: don't check blk_mq_tag_to_rq when receiving pdu dataSagi Grimberg1-11/+3
We already validate it when receiving the c2hdata pdu header and this is not changing so this is a redundant check. Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Daniel Wagner <dwagner@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16nvme-pci: limit maximum queue depth to 4095Sagi Grimberg1-9/+5
We are going to use the upper 4-bits of the command_id for a generation counter, so enforce the new queue depth upper limit. As we enforce both min and max queue depth, use param_set_uint_minmax istead of open coding it. Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Daniel Wagner <dwagner@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-08-16mfd: tps65086: Add cell entry for reset driverEmil Renner Berthing1-0/+1
The only way to reset the BeagleV Starlight v0.9 board[1] properly is to tell the PMIC to reset itself which will then assert the external reset lines of the SoC, USB hub and ethernet phy. This adds an mfd cell entry for the reset driver doing just that. [1] https://github.com/beagleboard/beaglev-starlight Signed-off-by: Emil Renner Berthing <kernel@esmil.dk> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-08-16mfd: tps65086: Make interrupt line optionalEmil Renner Berthing1-10/+11
The BeagleV Starlight v0.9 board[1] doesn't have the IRQB line routed to the SoC, but it is still useful to be able to reach the PMIC over I2C for the other functionality it provides such as GPIOs and regulator settings. [1] https://github.com/beagleboard/beaglev-starlight Signed-off-by: Emil Renner Berthing <kernel@esmil.dk> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-08-16net: iosm: Prevent underflow in ipc_chnl_cfg_get()Dan Carpenter1-4/+3
The bounds check on "index" doesn't catch negative values. Using ARRAY_SIZE() directly is more readable and more robust because it prevents negative values for "index". Fortunately we only pass valid values to ipc_chnl_cfg_get() so this patch does not affect runtime. Reported-by: Solomon Ucko <solly.ucko@gmail.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: M Chetan Kumar <m.chetan.kumar@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-16spi: orion: Prevent incorrect chip select behaviourNathan Rossi1-6/+16
When clearing the chip-select mask, the controller will switch to chip selecting the native CS0 line. Because the control register chip-select mask is not updated in a single write this will cause undesirable chip-selection of CS0 even when requesting to select other native chip-select lines. This is additionally problematic as the chip-select may still be asserted. With the ARMADA 38x SoC the controller will assert both the desired native chip-select and CS0. To avoid any undesirable behaviour with the chip-select lines, update the control register with a single write. This avoids selecting CS0 and causes the (de-)assert to apply at the same time. Signed-off-by: Nathan Rossi <nathan.rossi@digi.com> Link: https://lore.kernel.org/r/20210816050228.3223661-1-nathan@nathanrossi.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-08-16drm: ttm: Don't bail from ttm_global_init if debugfs_create_dir failsDan Moulding1-2/+0
In 69de4421bb4c ("drm/ttm: Initialize debugfs from ttm_global_init()"), ttm_global_init was changed so that if creation of the debugfs global root directory fails, ttm_global_init will bail out early and return an error, leading to initialization failure of DRM drivers. However, not every system will be using debugfs. On such a system, debugfs directory creation can be expected to fail, but DRM drivers must still be usable. This changes it so that if creation of TTM's debugfs root directory fails, then no biggie: keep calm and carry on. Fixes: 69de4421bb4c ("drm/ttm: Initialize debugfs from ttm_global_init()") Signed-off-by: Dan Moulding <dmoulding@me.com> Tested-by: Huacai Chen <chenhuacai@loongson.cn> Reviewed-by: Huang Rui <ray.huang@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210810195906.22220-2-dmoulding@me.com Signed-off-by: Christian König <christian.koenig@amd.com>
2021-08-16drm/virtio: support mapping exported vramDavid Stevens3-2/+99
Implement virtgpu specific map_dma_buf callback to support mapping exported vram object dma-bufs. The dma-buf callback is used directly, as vram objects don't have backing pages and thus can't implement the drm_gem_object_funcs.get_sg_table callback. Signed-off-by: David Stevens <stevensd@chromium.org> Link: http://patchwork.freedesktop.org/patch/msgid/20210813005441.608293-1-stevensd@chromium.org Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-08-16dma-buf: WARN on dmabuf release with pending attachmentsCharan Teja Reddy1-0/+1
It is expected from the clients to follow the below steps on an imported dmabuf fd: a) dmabuf = dma_buf_get(fd) // Get the dmabuf from fd b) dma_buf_attach(dmabuf); // Clients attach to the dmabuf o Here the kernel does some slab allocations, say for dma_buf_attachment and may be some other slab allocation in the dmabuf->ops->attach(). c) Client may need to do dma_buf_map_attachment(). d) Accordingly dma_buf_unmap_attachment() should be called. e) dma_buf_detach () // Clients detach to the dmabuf. o Here the slab allocations made in b) are freed. f) dma_buf_put(dmabuf) // Can free the dmabuf if it is the last reference. Now say an erroneous client failed at step c) above thus it directly called dma_buf_put(), step f) above. Considering that it may be the last reference to the dmabuf, buffer will be freed with pending attachments left to the dmabuf which can show up as the 'memory leak'. This should at least be reported as the WARN(). Signed-off-by: Charan Teja Reddy <charante@codeaurora.org> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/1627043468-16381-1-git-send-email-charante@codeaurora.org Signed-off-by: Christian König <christian.koenig@amd.com>
2021-08-16drm/i915/dp: remove superfluous EXPORT_SYMBOL()Jani Nikula1-1/+0
The symbol isn't needed outside of i915.ko. Fixes: b30edfd8d0b4 ("drm/i915: Switch to LTTPR non-transparent mode link training") Fixes: 264613b406eb ("drm/i915: Disable LTTPR support when the DPCD rev < 1.4") Cc: Imre Deak <imre.deak@intel.com> Reviewed-by: Imre Deak <imre.deak@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210816071737.2917-1-jani.nikula@intel.com
2021-08-16dma-buf: nuke seqno-fenceChristian König2-72/+1
Entirely unused. Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20210729070330.41443-1-christian.koenig@amd.com
2021-08-16power: supply: max17042: remove duplicated STATUS bit definesKrzysztof Kozlowski1-4/+1
All bits of STATUS register are already defined (see STATUS_SMN_BIT and further) so there is no need to define status SoC threshold min/max values one more time. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2021-08-16power: supply: max17042: handle fails of reading status registerKrzysztof Kozlowski1-1/+5
Reading status register can fail in the interrupt handler. In such case, the regmap_read() will not store anything useful under passed 'val' variable and random stack value will be used to determine type of interrupt. Handle the regmap_read() failure to avoid handling interrupt type and triggering changed power supply event based on random stack value. Fixes: 39e7213edc4f ("max17042_battery: Support regmap to access device's registers") Cc: <stable@vger.kernel.org> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2021-08-16net: stmmac: add ethtool per-queue irq statistic supportVijayakannan Ayyathurai3-0/+6
Adding ethtool per-queue statistics support to show number of interrupts generated at DMA tx and DMA rx. All the counters are incremented at dwmac4_dma_interrupt function. Signed-off-by: Vijayakannan Ayyathurai <vijayakannan.ayyathurai@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-16net: stmmac: add ethtool per-queue statistic frameworkVijayakannan Ayyathurai3-1/+80
Adding generic ethtool per-queue statistic framework to display the statistics for each rx/tx queue. In future, users can avail it to add more per-queue specific counters. Number of rx/tx queues displayed is depending on the available rx/tx queues in that particular MAC config and this number is limited up to the MTL_MAX_{RX|TX}_QUEUES defined in the driver. Ethtool per-queue statistic display will look like below, when users start adding more counters. Example: q0_tx_statA: q0_tx_statB: q0_tx_statC: | q0_tx_statX: . . . qMAX_tx_statA: qMAX_tx_statB: qMAX_tx_statC: | qMAX_tx_statX: q0_rx_statA: q0_rx_statB: q0_rx_statC: | q0_rx_statX: . . . qMAX_rx_statA: qMAX_rx_statB: qMAX_rx_statC: | qMAX_rx_statX: In addition, this patch has the support on displaying the number of packets received and transmitted per queue. Signed-off-by: Vijayakannan Ayyathurai <vijayakannan.ayyathurai@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-16net: stmmac: fix INTR TBU status affecting irq count statisticVoon Weifeng1-2/+3
DMA channel status "Transmit buffer unavailable(TBU)" bit is not considered as a successful dma tx. Hence, it should not affect all the irq count statistic. Fixes: 1103d3a5531c ("net: stmmac: dwmac4: Also use TBU interrupt to clean TX path") Signed-off-by: Voon Weifeng <weifeng.voon@intel.com> Signed-off-by: Vijayakannan Ayyathurai <vijayakannan.ayyathurai@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-16bnxt_en: Add missing DMA memory barriersMichael Chan1-0/+12
Each completion ring entry has a valid bit to indicate that the entry contains a valid completion event. The driver's main poll loop __bnxt_poll_work() has the proper dma_rmb() to make sure the valid bit of the next entry has been checked before proceeding further. But when we call bnxt_rx_pkt() to process the RX event, the RX completion event consists of two completion entries and only the first entry has been checked to be valid. We need the same barrier after checking the next completion entry. Add missing dma_rmb() barriers in bnxt_rx_pkt() and other similar locations. Fixes: 67a95e2022c7 ("bnxt_en: Need memory barrier when processing the completion ring.") Reported-by: Lance Richardson <lance.richardson@broadcom.com> Reviewed-by: Andy Gospodarek <gospo@broadcom.com> Reviewed-by: Lance Richardson <lance.richardson@broadcom.com> Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-16bnxt_en: Disable aRFS if running on 212 firmwareMichael Chan1-0/+3
212 firmware broke aRFS, so disable it. Traffic may stop after ntuple filters are inserted and deleted by the 212 firmware. Fixes: ae10ae740ad2 ("bnxt_en: Add new hardware RFS mode.") Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com> Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-16net: dsa: sja1105: reorganize probe, remove, setup and teardown orderingVladimir Oltean1-198/+199
The sja1105 driver's initialization and teardown sequence is a chaotic mess that has gathered a lot of cruft over time. It works because there is no strict dependency between the functions, but it could be improved. The basic principle that teardown should be the exact reverse of setup is obviously not held. We have initialization steps (sja1105_tas_setup, sja1105_flower_setup) in the probe method that are torn down in the DSA .teardown method instead of driver unbind time. We also have code after the dsa_register_switch() call, which implicitly means after the .setup() method has finished, which is pretty unusual. Also, sja1105_teardown() has calls set up in a different order than the error path of sja1105_setup(): see the reversed ordering between sja1105_ptp_clock_unregister and sja1105_mdiobus_unregister. Also, sja1105_static_config_load() is called towards the end of sja1105_setup(), but sja1105_static_config_free() is also towards the end of the error path and teardown path. The static_config_load() call should be earlier. Also, making and breaking the connections between struct sja1105_port and struct dsa_port could be refactored into dedicated functions, makes the code easier to follow. We move some code from the DSA .setup() method into the probe method, like the device tree parsing, and we move some code from the probe method into the DSA .setup() method to be symmetric with its placement in the DSA .teardown() method, which is nice because the unbind function has a single call to dsa_unregister_switch(). Example of the latter type of code movement are the connections between ports mentioned above, they are now in the .setup() method. Finally, due to fact that the kthread_init_worker() call is no longer in sja1105_probe() - located towards the bottom of the file - but in sja1105_setup() - located much higher - there is an inverse ordering with the worker function declaration, sja1105_port_deferred_xmit. To avoid that, the entire sja1105_setup() and sja1105_teardown() functions are moved towards the bottom of the file. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-08-16qed: Fix null-pointer dereference in qed_rdma_create_qp()Shai Malin1-2/+1
Fix a possible null-pointer dereference in qed_rdma_create_qp(). Changes from V2: - Revert checkpatch fixes. Reported-by: TOTE Robot <oslab@tsinghua.edu.cn> Signed-off-by: Ariel Elior <aelior@marvell.com> Signed-off-by: Shai Malin <smalin@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>