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2020-02-25net/mlx5: sparse: warning: incorrect type in assignmentSaeed Mahameed
drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c:191:13: sparse: warning: incorrect type in assignment (different base types) Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Reviewed-by: Moshe Shemesh <moshe@mellanox.com>
2020-02-25net/mlx5: Fix header guard in rsc_dump.hNathan Chancellor
Clang warns: In file included from ../drivers/net/ethernet/mellanox/mlx5/core/main.c:73: ../drivers/net/ethernet/mellanox/mlx5/core/diag/rsc_dump.h:4:9: warning: '__MLX5_RSC_DUMP_H' is used as a header guard here, followed by #define of a different macro [-Wheader-guard] #ifndef __MLX5_RSC_DUMP_H ^~~~~~~~~~~~~~~~~ ../drivers/net/ethernet/mellanox/mlx5/core/diag/rsc_dump.h:5:9: note: '__MLX5_RSC_DUMP__H' is defined here; did you mean '__MLX5_RSC_DUMP_H'? #define __MLX5_RSC_DUMP__H ^~~~~~~~~~~~~~~~~~ __MLX5_RSC_DUMP_H 1 warning generated. Make them match to get the intended behavior and remove the warning. Fixes: 12206b17235a ("net/mlx5: Add support for resource dump") Link: https://github.com/ClangBuiltLinux/linux/issues/897 Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-25net/mlx5e: RX, Use indirect calls wrapper for handling compressed completionsTariq Toukan
We can avoid an indirect call per compressed completion wrapping the completion handling call with the appropriate helper. Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Reviewed-by: Maxim Mikityanskiy <maximmi@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-25net/mlx5e: RX, Use indirect calls wrapper for posting descriptorsTariq Toukan
We can avoid an indirect call per NAPI cycle wrapping the RX descriptors posting call with the appropriate helper. Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Reviewed-by: Maxim Mikityanskiy <maximmi@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-25net/mlx5e: Change inline mode correctly when changing trust stateMaxim Mikityanskiy
The current steps that are performed when the trust state changes, if the channels are active: 1. The trust state is changed in hardware. 2. The new inline mode is calculated. 3. If the new inline mode is different, the channels are recreated using the new inline mode. This approach has some issues: 1. There is a time gap between changing trust state in hardware and starting sending enough inline headers (the latter happens after recreation of channels). It leads to failed transmissions and error CQEs. 2. If the new channels fail to open, we'll be left with the old ones, but the hardware will be configured for the new trust state, so the interval when we can see TX errors never ends. This patch fixes the issues above by moving the trust state change into the preactivate hook that runs during the recreation of the channels when no channels are active, so it eliminates the gap of partially applied configuration. If the inline mode doesn't change with the change of the trust state, the channels won't be recreated, just like before this patch. Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-25net/mlx5e: Add context to the preactivate hookMaxim Mikityanskiy
Sometimes the preactivate hook of mlx5e_safe_switch_channels needs more parameters than just struct mlx5e_priv *. For such cases, a new parameter (void *context) is added to preactivate hooks. Some of the existing normal functions are currently used as preactivate callbacks. To avoid adding an extra unused parameter, they are wrapped in an automatic way using the MLX5E_DEFINE_PREACTIVATE_WRAPPER_CTX macro. Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-25net/mlx5e: Allow mlx5e_switch_priv_channels to fail and recoverMaxim Mikityanskiy
Currently mlx5e_switch_priv_channels expects that the preactivate hook doesn't fail, however, it can fail, because it may set hardware parameters. This commit addresses this issue and provides a way to recover from failures of the preactivate hook: the old channels are not closed until the point where nothing can fail anymore, so in case preactivate fails, the driver can roll back the old channels and activate them again. Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-25net/mlx5e: Remove unneeded netif_set_real_num_tx_queuesMaxim Mikityanskiy
The number of queues is now updated by mlx5e_update_netdev_queues in a centralized way, when no channels are active. Remove an extra occurrence of netif_set_real_num_tx_queues to prepare it for the next commit. Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-25net/mlx5e: Fix configuration of XPS cpumasks and netdev queues in corner casesMaxim Mikityanskiy
Currently, mlx5e notifies the kernel about the number of queues and sets the default XPS cpumasks when channels are activated. This implementation has several corner cases, in which the kernel may not be updated on time, or XPS cpumasks may be reset when not directly touched by the user. This commit fixes these corner cases to match the following expected behavior: 1. The number of queues always corresponds to the number of channels configured. 2. XPS cpumasks are set to driver's defaults on netdev attach. 3. XPS cpumasks set by user are not reset, unless the number of channels changes. If the number of channels changes, they are reset to driver's defaults. (In general case, when the number of channels increases or decreases, it's not possible to guess how to convert the current XPS cpumasks to work with the new number of channels, so we let the user reconfigure it if they change the number of channels.) XPS cpumasks are no longer stored per channel. Only one temporary cpumask is used. The old stored cpumasks didn't reflect the user's changes and were not used after applying them. A scratchpad area is added to struct mlx5e_priv. As cpumask_var_t requires allocation, and the preactivate hook can't fail, we need to preallocate the temporary cpumask in advance. It's stored in the scratchpad. Fixes: 149e566fef81 ("net/mlx5e: Expand XPS cpumask to cover all online cpus") Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-25net/mlx5e: Use preactivate hook to set the indirection tableMaxim Mikityanskiy
mlx5e_ethtool_set_channels updates the indirection table before switching to the new channels. If the switch fails, the indirection table is new, but the channels are old, which is wrong. Fix it by using the preactivate hook of mlx5e_safe_switch_channels to update the indirection table at the stage when nothing can fail anymore. As the code that updates the indirection table is now encapsulated into a new function, use that function in the attach flow when the driver has to reduce the number of channels, and prepare the code for the next commit. Fixes: 85082dba0a ("net/mlx5e: Correctly handle RSS indirection table when changing number of channels") Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-25net/mlx5e: Rename hw_modify to preactivateMaxim Mikityanskiy
mlx5e_safe_switch_channels accepts a callback to be called before activating new channels. It is intended to configure some hardware parameters in cases where channels are recreated because some configuration has changed. Recently, this callback has started being used to update the driver's internal MLX5E_STATE_XDP_OPEN flag, and the following patches also intend to use this callback for software preparations. This patch renames the hw_modify callback to preactivate, so that the name fits better. Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-25net/mlx5e: Encapsulate updating netdev queues into a functionMaxim Mikityanskiy
As a preparation for one of the following commits, create a function to encapsulate the code that notifies the kernel about the new amount of RX and TX queues. The code will be called multiple times in the next commit. Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-25net/mlx5e: Add missing LRO cap checkTariq Toukan
The LRO boolean state in params->lro_en must not be set in case the NIC is not capable. Enforce this check and remove the TODO comment. Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-25net/mlx5e: Define one flow for TXQ selection when TCs are configuredEran Ben Elisha
We shall always extract channel index out of the txq, regardless of the relation between txq_ix and num channels. The extraction is always valid, as if txq is smaller than number of channels, txq_ix == priv->txq2sq[txq_ix]->ch_ix. By doing so, we can remove an if clause from the select queue method, and have one flow for all packets. Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Reviewed-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-25virtio_net: Add XDP meta data supportYuya Kusakabe
Implement support for transferring XDP meta data into skb for virtio_net driver; before calling into the program, xdp.data_meta points to xdp.data, where on program return with pass verdict, we call into skb_metadata_set(). Tested with the script at https://github.com/higebu/virtio_net-xdp-metadata-test. Signed-off-by: Yuya Kusakabe <yuya.kusakabe@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Jason Wang <jasowang@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Link: https://lore.kernel.org/bpf/20200225033212.437563-2-yuya.kusakabe@gmail.com
2020-02-25virtio_net: Keep vnet header zeroed if XDP is loaded for small bufferYuya Kusakabe
We do not want to care about the vnet header in receive_small() if XDP is loaded, since we can not know whether or not the packet is modified by XDP. Fixes: f6b10209b90d ("virtio-net: switch to use build_skb() for small buffer") Signed-off-by: Yuya Kusakabe <yuya.kusakabe@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Jason Wang <jasowang@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Link: https://lore.kernel.org/bpf/20200225033212.437563-1-yuya.kusakabe@gmail.com
2020-02-25hwmon: (pmbus/xdpe12284) Add callback for vout limits conversionVadim Pasternak
Provide read_word_data() callback for overvoltage and undervoltage output readouts conversion. These registers are presented in 'slinear11' format, while default conversion for 'vout' class for the devices is 'vid'. It is resulted in wrong conversion in pmbus_reg2data() for in{3-4}_lcrit and in{3-4}_crit attributes. ) Fixes: aaafb7c8eb1c ("hwmon: (pmbus) Add support for Infineon Multi-phase xdpe122 family controllers") Signed-off-by: Vadim Pasternak <vadimp@mellanox.com> Link: https://lore.kernel.org/r/20200224225202.19576-1-vadimp@mellanox.com [gropeck: Adjusted to mainline PMBus API] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2020-02-25clocksource/drivers/arm_arch_timer: Fix vDSO clockmode when vDSO disabledVincenzo Frascino
The arm_arch_timer requires VDSO_CLOCKMODE_ARCHTIMER to be defined to compile correctly. On ARM the vDSO can be disabled and when this is the case the compilation ends prematurely with an error: $ make ARCH=arm multi_v7_defconfig $ ./scripts/config -d VDSO $ make drivers/clocksource/arm_arch_timer.c:73:44: error: ‘VDSO_CLOCKMODE_ARCHTIMER’ undeclared here (not in a function) static enum vdso_clock_mode vdso_default = VDSO_CLOCKMODE_ARCHTIMER; Make the usage of VDSO_CLOCKMODE_ARCHTIMER depend on the VDSO enablement and initialize the vdso clockmode variable with VDSO_CLOCKMODE_NONE otherwise. [ tglx: Match changelog and patch content. ] Fixes: 5e3c6a312a09 ("ARM/arm64: vdso: Use common vdso clock mode storage") Reported-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20200224151552.57274-1-vincenzo.frascino@arm.com
2020-02-25drm/panfrost: Don't try to map on error faultsTomeu Vizoso
If the exception type isn't a translation fault, don't try to map and instead go straight to a terminal fault. Otherwise, we can get flooded by kernel warnings and further faults. Fixes: 187d2929206e ("drm/panfrost: Add support for GPU heap allocations") Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200212202236.13095-1-robh@kernel.org
2020-02-25netdevsim: add ACL trap reporting cookie as a metadataJiri Pirko
Add new trap ACL which reports flow action cookie in a metadata. Allow used to setup the cookie using debugfs file. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-25mlxsw: spectrum_trap: Lookup and pass cookie down to devlink_trap_report()Jiri Pirko
Use the cookie index received along with the packet to lookup original flow_offload cookie binary and pass it down to devlink_trap_report(). Add "fa_cookie" metadata to the ACL trap. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-25mlxsw: pci: Extract cookie index for ACL discard trap packetsJiri Pirko
In case the received packet comes in due to one of ACL discard traps, take the user_def_val_orig_pkt_len field from CQE and store it in skb->cb as ACL cookie index. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-25mlxsw: core_acl_flex_actions: Implement flow_offload action cookie offloadJiri Pirko
Track cookies coming down to driver by flow_offload. Assign a cookie_index to each unique cookie binary. Use previously defined "Trap with userdef" flex action to ask HW to pass cookie_index alongside with the dropped packets. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-25mlxsw: core_acl_flex_actions: Add trap with userdef actionJiri Pirko
Expose "Trap action with userdef". It is the same as already defined "Trap action" with a difference that it would ask the policy engine to pass arbitrary value (userdef) alongside with received packets. This would be later on used to carry cookie index. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-25devlink: extend devlink_trap_report() to accept cookie and passJiri Pirko
Add cookie argument to devlink_trap_report() allowing driver to pass in the user cookie. Pass on the cookie down to drop monitor code. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-25dm integrity: fix invalid table returned due to argument count mismatchMikulas Patocka
If the flag SB_FLAG_RECALCULATE is present in the superblock, but it was not specified on the command line (i.e. ic->recalculate_flag is false), dm-integrity would return invalid table line - the reported number of arguments would not match the real number. Fixes: 468dfca38b1a ("dm integrity: add a bitmap mode") Cc: stable@vger.kernel.org # v5.2+ Reported-by: Ondrej Kozina <okozina@redhat.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2020-02-25dm integrity: fix a deadlock due to offloading to an incorrect workqueueMikulas Patocka
If we need to perform synchronous I/O in dm_integrity_map_continue(), we must make sure that we are not in the map function - in order to avoid the deadlock due to bio queuing in generic_make_request. To avoid the deadlock, we offload the request to metadata_wq. However, metadata_wq also processes metadata updates for write requests. If there are too many requests that get offloaded to metadata_wq at the beginning of dm_integrity_map_continue, the workqueue metadata_wq becomes clogged and the system is incapable of processing any metadata updates. This causes a deadlock because all the requests that need to do metadata updates wait for metadata_wq to proceed and metadata_wq waits inside wait_and_add_new_range until some existing request releases its range lock (which doesn't happen because the range lock is released after metadata update). In order to fix the deadlock, we create a new workqueue offload_wq and offload requests to it - so that processing of offload_wq is independent from processing of metadata_wq. Fixes: 7eada909bfd7 ("dm: add integrity target") Cc: stable@vger.kernel.org # v4.12+ Reported-by: Heinz Mauelshagen <heinzm@redhat.com> Tested-by: Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2020-02-25dm integrity: fix recalculation when moving from journal mode to bitmap modeMikulas Patocka
If we resume a device in bitmap mode and the on-disk format is in journal mode, we must recalculate anything above ic->sb->recalc_sector. Otherwise, there would be non-recalculated blocks which would cause I/O errors. Fixes: 468dfca38b1a ("dm integrity: add a bitmap mode") Cc: stable@vger.kernel.org # v5.2+ Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2020-02-25null_blk: remove unused fields in 'nullb_cmd'Dongli Zhang
'list', 'll_list' and 'csd' are no longer used. The 'list' is not used since it was introduced by commit f2298c0403b0 ("null_blk: multi queue aware block test driver"). The 'll_list' is no longer used since commit 3c395a969acc ("null_blk: set a separate timer for each command"). The 'csd' is no longer used since commit ce2c350b2cfe ("null_blk: use blk_complete_request and blk_mq_complete_request"). Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-02-25amdgpu/gmc_v9: save/restore sdpif regs during S3Shirish S
fixes S3 issue with IOMMU + S/G enabled @ 64M VRAM. Suggested-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Shirish S <shirish.s@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2020-02-25drm/amdgpu: fix memory leak during TDR test(v2)Monk Liu
fix system memory leak v2: fix coding style Signed-off-by: Monk Liu <Monk.Liu@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-02-25x86/*/Makefile: Use -fno-asynchronous-unwind-tables to suppress .eh_frame ↵Arvind Sankar
sections While discussing a patch to discard .eh_frame from the compressed vmlinux using the linker script, Fangrui Song pointed out [1] that these sections shouldn't exist in the first place because arch/x86/Makefile uses -fno-asynchronous-unwind-tables. It turns out this is because the Makefiles used to build the compressed kernel redefine KBUILD_CFLAGS, dropping this flag. Add the flag to the Makefile for the compressed kernel, as well as the EFI stub Makefile to fix this. Also add the flag to boot/Makefile and realmode/rm/Makefile so that the kernel's boot code (boot/setup.elf) and realmode trampoline (realmode/rm/realmode.elf) won't be compiled with .eh_frame sections, since their linker scripts also just discard them. [1] https://lore.kernel.org/lkml/20200222185806.ywnqhfqmy67akfsa@google.com/ Suggested-by: Fangrui Song <maskray@google.com> Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Tested-by: Nathan Chancellor <natechancellor@gmail.com> Link: https://lkml.kernel.org/r/20200224232129.597160-2-nivedita@alum.mit.edu
2020-02-25USB: serial: f81232: set F81534A serial port with RS232 modeJi-Ze Hong (Peter Hong)
The Fintek F81532A/534A/535/536 is USB-to-2/4/8/12 serial ports device and the serial ports are default disabled. Each port contains max 3 pins GPIO and the 3 pins are default pull high with input mode. When the serial port had activated (running probe()), we'll transform the 3 pins from GPIO function publicly to control Tranceiver privately use. We'll default set to 0/0/1 for control transceiver to RS232 mode. Otherwise, If the serial port is not active, the 3 pins is in GPIO mode and controlled by global GPIO device with VID/PID: 2c42/16f8. Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com> Signed-off-by: Johan Hovold <johan@kernel.org>
2020-02-25USB: serial: f81232: add F81534A supportJi-Ze Hong (Peter Hong)
The Fintek F81532A/534A/535/536 is USB-to-2/4/8/12 serial ports device and the serial port is default disabled when plugin computer. The IC is contains devices as following: 1. HUB (all devices is connected with this hub) 2. GPIO/Control device. (enable serial port and control GPIOs) 3. serial port 1 to x (2/4/8/12) It's most same with F81232, the UART device is difference as follow: 1. TX/RX bulk size is 128/512bytes 2. RX bulk layout change: F81232: [LSR(1Byte)+DATA(1Byte)][LSR(1Byte)+DATA(1Byte)]... F81534A:[LEN][Data.....][LSR] Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com> [johan: reword an error message] Signed-off-by: Johan Hovold <johan@kernel.org>
2020-02-25USB: serial: f81232: use devm_kzalloc for port dataJi-Ze Hong (Peter Hong)
Use devm_kzalloc() to replace kzalloc() in port_probe(). Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com> Signed-off-by: Johan Hovold <johan@kernel.org>
2020-02-25USB: serial: f81232: add tx_empty functionJi-Ze Hong (Peter Hong)
Add tx_empty() function for F81232. Without this, console redirection will get garbage data. Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com> Signed-off-by: Johan Hovold <johan@kernel.org>
2020-02-25USB: serial: f81232: extract LSR handlerJi-Ze Hong (Peter Hong)
Extract LSR handler to function that can be re-used by F81532A/534A/535/536. Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com> Signed-off-by: Johan Hovold <johan@kernel.org>
2020-02-25dmaengine: imx-sdma: Fix the event id check to include RX event for UART6Frieder Schrempf
On i.MX6UL/ULL and i.MX6SX the DMA event id for the RX channel of UART6 is '0'. To fix the broken DMA support for UART6, we change the check for event_id0 to include '0' as a valid id. Fixes: 1ec1e82f2510 ("dmaengine: Add Freescale i.MX SDMA support") Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de> Reviewed-by: Fabio Estevam <festevam@gmail.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200225082139.7646-1-frieder.schrempf@kontron.de Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-02-25drm/i915/gvt: Fix orphan vgpu dmabuf_objs' lifetimeTina Zhang
Deleting dmabuf item's list head after releasing its container can lead to KASAN-reported issue: BUG: KASAN: use-after-free in __list_del_entry_valid+0x15/0xf0 Read of size 8 at addr ffff88818a4598a8 by task kworker/u8:3/13119 So fix this issue by puting deleting dmabuf_objs ahead of releasing its container. Fixes: dfb6ae4e14bd6 ("drm/i915/gvt: Handle orphan dmabuf_objs") Signed-off-by: Tina Zhang <tina.zhang@intel.com> Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20200225053527.8336-2-tina.zhang@intel.com
2020-02-25dmaengine: tegra-apb: Prevent race conditions of tasklet vs free listDmitry Osipenko
The interrupt handler puts a half-completed DMA descriptor on a free list and then schedules tasklet to process bottom half of the descriptor that executes client's callback, this creates possibility to pick up the busy descriptor from the free list. Thus, let's disallow descriptor's re-use until it is fully processed. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200209163356.6439-3-digetx@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-02-25dmaengine: tegra-apb: Fix use-after-freeDmitry Osipenko
I was doing some experiments with I2C and noticed that Tegra APB DMA driver crashes sometime after I2C DMA transfer termination. The crash happens because tegra_dma_terminate_all() bails out immediately if pending list is empty, and thus, it doesn't release the half-completed descriptors which are getting re-used before ISR tasklet kicks-in. tegra-i2c 7000c400.i2c: DMA transfer timeout elants_i2c 0-0010: elants_i2c_irq: failed to read data: -110 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 142 at lib/list_debug.c:45 __list_del_entry_valid+0x45/0xac list_del corruption, ddbaac44->next is LIST_POISON1 (00000100) Modules linked in: CPU: 0 PID: 142 Comm: kworker/0:2 Not tainted 5.5.0-rc2-next-20191220-00175-gc3605715758d-dirty #538 Hardware name: NVIDIA Tegra SoC (Flattened Device Tree) Workqueue: events_freezable_power_ thermal_zone_device_check [<c010e5c5>] (unwind_backtrace) from [<c010a1c5>] (show_stack+0x11/0x14) [<c010a1c5>] (show_stack) from [<c0973925>] (dump_stack+0x85/0x94) [<c0973925>] (dump_stack) from [<c011f529>] (__warn+0xc1/0xc4) [<c011f529>] (__warn) from [<c011f7e9>] (warn_slowpath_fmt+0x61/0x78) [<c011f7e9>] (warn_slowpath_fmt) from [<c042497d>] (__list_del_entry_valid+0x45/0xac) [<c042497d>] (__list_del_entry_valid) from [<c047a87f>] (tegra_dma_tasklet+0x5b/0x154) [<c047a87f>] (tegra_dma_tasklet) from [<c0124799>] (tasklet_action_common.constprop.0+0x41/0x7c) [<c0124799>] (tasklet_action_common.constprop.0) from [<c01022ab>] (__do_softirq+0xd3/0x2a8) [<c01022ab>] (__do_softirq) from [<c0124683>] (irq_exit+0x7b/0x98) [<c0124683>] (irq_exit) from [<c0168c19>] (__handle_domain_irq+0x45/0x80) [<c0168c19>] (__handle_domain_irq) from [<c043e429>] (gic_handle_irq+0x45/0x7c) [<c043e429>] (gic_handle_irq) from [<c0101aa5>] (__irq_svc+0x65/0x94) Exception stack(0xde2ebb90 to 0xde2ebbd8) Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200209163356.6439-2-digetx@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-02-25drm/mediatek: Handle component type MTK_DISP_OVL_2L correctlyPhong LE
The larb device remains NULL if the type is MTK_DISP_OVL_2L. A kernel panic is raised when a crtc uses mtk_smi_larb_get or mtk_smi_larb_put. Fixes: b17bdd0d7a73 ("drm/mediatek: add component OVL_2L0") Signed-off-by: Phong LE <ple@baylibre.com> Signed-off-by: CK Hu <ck.hu@mediatek.com>
2020-02-24Merge tag 'mac80211-next-for-net-next-2020-02-24' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next Johannes Berg says: ==================== A new set of changes: * lots of small documentation fixes, from Jérôme Pouiller * beacon protection (BIGTK) support from Jouni Malinen * some initial code for TID configuration, from Tamizh chelvam * I reverted some new API before it's actually used, because it's wrong to mix controlled port and preauth * a few other cleanups/fixes ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-24net: ethernet: stmmac: don't warn about missing optional wakeup IRQAhmad Fatoum
The "stm32_pwr_wakeup" is optional per the binding and the driver handles its absence gracefully. Request it with platform_get_irq_byname_optional, so its absence doesn't needlessly clutter the log. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-24net: ethernet: stmmac: demote warnings about missing optional clocksAhmad Fatoum
The specification of a "eth-ck" and a "ptp_ref" clock is optional per the binding and the driver handles them gracefully. Demote the output to an info message accordingly. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-24net: bcmgenet: reduce severity of missing clock warningsJeremy Linton
If one types "failed to get enet clock" or similar into google there are ~370k hits. The vast majority are people debugging problems unrelated to this adapter, or bragging about their rpi's. Further, the DT clock bindings here are optional. Given that its not a fatal situation with common DT based systems, lets reduce the severity so people aren't seeing failure messages in everyday operation. Signed-off-by: Jeremy Linton <jeremy.linton@arm.com> Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-24net: bcmgenet: Fetch MAC address from the adapterJeremy Linton
ARM/ACPI machines should utilize self describing hardware when possible. The MAC address on the BCMGENET can be read from the adapter if a full featured firmware has already programmed it. Lets try using the address already programmed, if it appears to be valid. It should be noted that while we move the macaddr logic below the clock and power logic in the driver, none of that code will ever be active in an ACPI environment as the device will be attached to the acpi power domain, and brought to full power with all clocks enabled immediately before the device probe routine is called. One side effect of the above tweak is that while its now possible to read the MAC address via _DSD properties, it should be avoided. Signed-off-by: Jeremy Linton <jeremy.linton@arm.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-24net: bcmgenet: Initial bcmgenet ACPI supportJeremy Linton
The rpi4 is capable of booting in ACPI mode with the latest edk2-platform commits. As such it would be helpful if the genet platform device were usable. To achieve this we add a new MODULE_DEVICE_TABLE, and convert a few dt specific methods to their generic device_ calls. Until the next patch, ACPI based machines will fallback on random mac addresses. Signed-off-by: Jeremy Linton <jeremy.linton@arm.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-24net: bcmgenet: enable automatic phy discoveryJeremy Linton
The unimac mdio driver falls back to scanning the entire bus if its given an appropriate mask. In ACPI mode we expect that the system is well behaved and conforms to recent versions of the specification. We then utilize phy_find_first(), and phy_connect_direct() to find and attach to the discovered phy during net_device open. While its apparently possible to build a genet based device with multiple phys on a single mdio bus, this works for current machines. Further, this driver makes a number of assumptions about the platform device, mac, mdio and phy all being 1:1. Lastly, It also avoids having to create references across the ACPI namespace hierarchy. Signed-off-by: Jeremy Linton <jeremy.linton@arm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-24net: bcmgenet: refactor phy mode configurationJeremy Linton
The DT phy mode is similar to what we want for ACPI lets factor it out of the of path, and change the of_ call to device_. Signed-off-by: Jeremy Linton <jeremy.linton@arm.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>