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2018-12-17bnxt_en: Add ethtool -S priority counters.Michael Chan
Display the CoS counters as additional priority counters by looking up the priority to CoS queue mapping. If the TX extended port statistics block size returned by firmware is big enough to cover the CoS counters, then we will display the new priority counters. We call firmware to get the up-to-date pri2cos mapping to convert the CoS counters to priority counters. Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-17bnxt_en: Add SR-IOV support for 57500 chips.Michael Chan
There are some minor differences when assigning VF resources on the new chips. The MSIX (NQ) resource has to be assigned and ring group is not needed on the new chips. Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-17bnxt_en: Disable MSIX before re-reserving NQs/CMPL rings.Michael Chan
When bringing up a device, the code checks to see if the number of MSIX has changed. pci_disable_msix() should be called first before changing the number of reserved NQs/CMPL rings. This ensures that the MSIX vectors associated with the NQs/CMPL rings are still properly mapped when pci_disable_msix() masks the vectors. This patch will prevent errors when RDMA support is added for the new 57500 chips. When the RDMA driver shuts down, the number of NQs is decreased and we must use the new sequence to prevent MSIX errors. Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-17bnxt_en: Reserve 1 stat_ctx for RDMA driver.Vasundhara Volam
bnxt_en requires same number of stat_ctxs as CP rings but RDMA requires only 1 stat_ctx. Also add a new parameter resv_stat_ctxs to better keep track of stat_ctxs reserved including resources used by RDMA. Add a stat_ctxs parameter to all the relevant resource reservation functions so we can reserve the correct number of stat_ctxs. Prior to this patch, we were not reserving the extra stat_ctx for RDMA and RDMA would not work on the new 57500 chips. Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com> Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-17bnxt_en: Do not modify max_stat_ctxs after RDMA driver requests/frees stat_ctxsVasundhara Volam
Calling bnxt_set_max_func_stat_ctxs() to modify max stat_ctxs requested or freed by the RDMA driver is wrong. After introducing reservation of resources recently, the driver has to keep track of all stat_ctxs including the ones used by the RDMA driver. This will provide a better foundation for accurate accounting of the stat_ctxs. Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com> Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-17bnxt_en: get rid of num_stat_ctxs variableVasundhara Volam
For bnxt_en driver, stat_ctxs created will always be same as cp_nr_rings. Remove extra variable that duplicates the value. Also introduce bnxt_get_avail_stat_ctxs_for_en() helper to get available stat_ctxs and bnxt_get_ulp_stat_ctxs() helper to return number of stat_ctxs used by RDMA. Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com> Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-17bnxt_en: Add bnxt_get_avail_cp_rings_for_en() helper function.Michael Chan
The available CP rings are calculated differently on the new 57500 chips, so add this helper to do this calculation correctly. The VFs will be assigned these available CP rings. Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-17bnxt_en: Store the maximum NQs available on the PF.Michael Chan
The PF has a pool of NQs and MSIX vectors assigned to it based on NVRAM configurations. The number of usable MSIX vectors on the PF is the minimum of the NQs and MSIX vectors. Any excess NQs without associated MSIX may be used for the VFs, so we need to store this max_nqs value. max_nqs minus the NQs used by the PF will be the available NQs for the VFs. Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-17blk-mq: change blk_mq_queue_busy() to blk_mq_queue_inflight()Jens Axboe
There's a single user of this function, dm, and dm just wants to check if IO is inflight, not that it's just allocated. This fixes a hang with srp/002 in blktests with dm, where it tries to suspend but waits for inflight IO to finish first. As it checks for just allocated requests, this fails. Tested-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-12-18power: supply: bq25890: fix BAT_COMP field definitionMichał Mirosław
According to datasheet, BAT_COMP field spans bits 5-7. The rest of the code seems to assume this already. Fixes: 4aeae9cb0dad ("power_supply: Add support for TI BQ25890 charger chip") Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2018-12-17i2c: tegra: Switch to SPDX identifierThierry Reding
Adopt the SPDX license identifier headers to ease license compliance management. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-12-17net/mlx5: Continue driver initialization despite debugfs failureLeon Romanovsky
The failure to create debugfs entry is unpleasant event, but not enough to abort drier initialization. Align the mlx5_core code to debugfs design and continue execution whenever debugfs_create_dir() successes or not. Fixes: e126ba97dba9 ("mlx5: Add driver for Mellanox Connect-IB adapters") Reviewed-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-12-17i2c: tegra: Add missing kerneldoc for some fieldsThierry Reding
Not all fields were properly documented. Add kerneldoc for the missing fields to prevent the build from flagging them. Reported-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-12-17i2c: tegra: Cleanup kerneldoc commentsThierry Reding
Some of the kerneldoc uses a strange spelling for abbreviations. Turn them into all-uppercase and clean up some whitespace issues while at it. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-12-17gpio/mmc/of: Respect polarity in the device treeLinus Walleij
The device tree bindings for the MMC card detect and write protect lines specify that these should be active low unless "cd-inverted" or "wp-inverted" has been specified. However that is not how the kernel code has worked. It has always respected the flags passed to the phandle in the device tree, but respected the "cd-inverted" and "wp-inverted" flags such that if those are set, the polarity will be the inverse of that specified in the device tree. Switch to behaving like the old code did and fix the regression. Fixes: 81c85ec15a19 ("gpio: OF: Parse MMC-specific CD and WP properties") Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com> Cc: Guenter Roeck <linux@roeck-us.net> Reported-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-12-17i2c: axxia: support sequence command modeAdamski, Krzysztof (Nokia - PL/Wroclaw)
In order to comply with SMBus specification, the Axxia I²C module will abort the multi message transfer if the delay between finishing sending one message and starting another is longer than 25ms. Unfortunately it isn't that hard to trigger this situation on a busy system. In order to fix this problem, we should make sure hardware does whole transaction without waiting for software to fill some data. Fortunately, in addition to Manual mode that is currently used by the driver to perform I²C transfers, the module supports also so called Sequence mode. In this mode, the module automatically performs predefined sequence of operations - it sends a slave address, transmits specified number of bytes from the FIFO, changes transfer direction, resends the slave address and then reads specified number of bytes to FIFO. While very inflexible, this does fit a most common case of multi message transfer - the one where you first write a register number you want to read and then read it. To use this mode effectively, a number of conditions must be met to ensure the transaction does fit the predefined sequence. In case this is not the case, a fallback to manual mode is used. The initialization of this mode is very similar to Manual mode. The most notable difference is different bit in the Master Interrupt Status designating finishing of transaction. Also some of the errors, like TSS, cannot happen in this mode. While it is possible to support transactions requesting a read of any size (RFL interrupt will be generated when FIFO size is not enough) the TFL interrupt is not available in this mode, thus the write part of the transaction cannot exceed FIFO_SIZE (8). Note that in case of a NAK during transaction, the NA/ND status bits will be set before STOP command is generated, triggering an interrupt while the controller is still busy. Current solution for this problem is to actively wait for this command to stop before leaving xfer callback. Signed-off-by: Krzysztof Adamski <krzysztof.adamski@nokia.com> Reviewed-by: Alexander Sverdlin <alexander.sverdlin@nokia.com> [wsa: added braces around else branch spotted by checkpatch] Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-12-17PCI: Override Synopsys USB 3.x HAPS device classThinh Nguyen
Synopsys USB 3.x host HAPS platform has a class code of PCI_CLASS_SERIAL_USB_XHCI, and xhci driver can claim it. However, these devices should use dwc3-haps driver. Change these devices' class code to PCI_CLASS_SERIAL_USB_DEVICE to prevent the xhci-pci driver from claiming them. Signed-off-by: Thinh Nguyen <thinhn@synopsys.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2018-12-17PCI: Move Synopsys HAPS platform device IDsThinh Nguyen
Move Synopsys HAPS platform device IDs to pci_ids.h so that both drivers/pci/quirks.c and dwc3-haps driver can reference these IDs. Signed-off-by: Thinh Nguyen <thinhn@synopsys.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-12-17i2c: sh_mobile: Add support for r8a774c0 (RZ/G2E)Fabrizio Castro
Similarly to R-Car E3, RZ/G2E doesn't come with automatic transmission registers, as such it is not considered compatible with the existing fallback bindings. Add SoC specific binding compatibility to allow for later support for automatic transmission. Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-12-17Merge tag 'at24-4.21-updates-for-wolfram' of ↵Wolfram Sang
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-5.0 at24: updates for 4.21 Adding a new compatible for 24c2048.
2018-12-17pinctrl: xway: fix gpio-hog related boot issuesMartin Schiller
This patch is based on commit a86caa9ba5d7 ("pinctrl: msm: fix gpio-hog related boot issues"). It fixes the issue that the gpio ranges needs to be defined before gpiochip_add(). Therefore, we also have to swap the order of registering the pinctrl driver and registering the gpio chip. You also have to add the "gpio-ranges" property to the pinctrl device node to get it finally working. Signed-off-by: Martin Schiller <ms@dev.tdt.de> Acked-by: John Crispin <john@phrozen.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-12-17i2c: i2c-cros-ec-tunnel: Switch to SPDX identifier.Enric Balletbo i Serra
Adopt the SPDX license identifier headers to ease license compliance management. Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-12-17memory: omap-gpmc: Get the header of the enumLinus Walleij
Commit 21abf103818a ("gpio: Pass a flag to gpiochip_request_own_desc()") started to pass an enum gpiod_flags but this file is not including the header file that defines that enum and the compiler spits: drivers/memory/omap-gpmc.c: In function 'gpmc_probe_generic_child': drivers/memory/omap-gpmc.c:2174:9: error: type of formal parameter 4 is incomplete 0); ^ Cc: Ladislav Michl <ladis@linux-mips.org> Cc: Janusz Krzysztofik <jmkrzyszt@gmail.com> Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Fixes: 21abf103818a ("gpio: Pass a flag to gpiochip_request_own_desc()") Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-12-17PCI/ASPM: Remove unused lists from struct pcie_link_stateFrederick Lawler
ASPM does not make use of the children or link LIST_HEADs declared in struct pcie_link_state and defined in alloc_pcie_link_state(). Therefore, remove these lists. No functional change intended. Signed-off-by: Frederick Lawler <fred@fredlawl.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2018-12-17media: staging/ipu3-imgu: Address documentation commentsSakari Ailus
Address comments on the documentation after Yong's original patch. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-17media: ipu3-imgu: Fix firmware binary locationSakari Ailus
The firmware binary is located under "intel" directory in the linux-firmware repository. Reflect this in the driver. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-17media: ipu3-imgu: Fix compiler warningsSakari Ailus
Address a few false positive compiler warnings related to uninitialised variables. While at it, use bool where bool is needed and %u to print an unsigned integer. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-17media: staging/intel-ipu3: Add dual pipe supportBingbu Cao
This patch adds support to run dual pipes simultaneously. A private ioctl to configure the pipe mode (video or still) is also implemented. IPU3 hardware supports a maximum of 2 streams per pipe. With the support of dual pipes, more than 2 stream outputs can be achieved. This helps to support advanced camera features like Continuous View Finder (CVF) and Snapshot During Video(SDV). Extend ipu3 IMGU driver to support dual pipes 1. Extend current IMGU device to contain 2 groups of video nodes and 2 subdevs 2. Extend current css to support 2 pipeline and make CSS APIs to support 2 pipe 3. Add a v4l2 ctrl to allow user to specify the mode of the pipe 4. Check media pipeline link status to get enabled pipes Signed-off-by: Bingbu Cao <bingbu.cao@intel.com> Signed-off-by: Tian Shu Qiu <tian.shu.qiu@intel.com> Signed-off-by: Yong Zhi <yong.zhi@intel.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-17media: drxk_hard: check if parameter is not NULLMauro Carvalho Chehab
There is a smatch warning: drivers/media/dvb-frontends/drxk_hard.c: drivers/media/dvb-frontends/drxk_hard.c:1478 scu_command() error: we previously assumed 'parameter' could be null (see line 1467) Telling that parameter might be NULL. Well, it can't, due to the way the driver works, but it doesn't hurt to add a check, in order to shut up smatch. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-12-17Merge tag 'tpmdd-next-20181217' of ↵James Morris
git://git.infradead.org/users/jjs/linux-tpmdd into next-tpm tpmdd updates for Linux v4.21 From Jarkko: v4.21 updates: * Support for partial reads of /dev/tpm0. * Clean up for TPM 1.x code: move the commands to tpm1-cmd.c and make everything to use the same data structure for building TPM commands i.e. struct tpm_buf.
2018-12-17ucc_geth: Add change_carrier() for Fixed PHYsJoakim Tjernlund
This allows to control carrier from /sys/class/net/ethX/carrier for Fixed PHYs. Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-17gianfar: Add change_carrier() for Fixed PHYsJoakim Tjernlund
This allows to control carrier from /sys/class/net/ethX/carrier for Fixed PHYs. Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-17dpaa_eth: Add change_carrier() for Fixed PHYsJoakim Tjernlund
This allows to control carrier from /sys/class/net/ethX/carrier for Fixed PHYs. Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-17Fixed PHY: Add fixed_phy_change_carrier()Joakim Tjernlund
Drivers can use this as .ndo_change_carrier() to change carrier via /sys/class/net/ethX/carrier. Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-17net/mlx4_en: remove fallback after kzalloc_node()Eric Dumazet
kzalloc_node(..., GFP_KERNEL, node) will attempt to allocate memory as close as possible to the node. There is no need to fallback to kzalloc() if this has failed. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-17regmap: debugfs: convert to DEFINE_SHOW_ATTRIBUTEYangtao Li
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code. Signed-off-by: Yangtao Li <tiny.windzz@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-12-17regmap: rbtree: convert to DEFINE_SHOW_ATTRIBUTEYangtao Li
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code. Signed-off-by: Yangtao Li <tiny.windzz@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-12-17net/mlx5e: Add some ethtool port control entries to the uplink rep netdevOr Gerlitz
Some of the ethtool entries to control the port should be supported by the uplink rep netdev in switchdev mode, add them. While here, add also the get/set coalesce entries for all reps. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-12-17net/mlx5e: Expose ethtool pause and link functions to mlx5e callersOr Gerlitz
Towards supporting set/get of global pause for the port and get of the port link ksetting from the uplink representor, expose the relevant entries to other mlx5 callers. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-12-17net/mlx5e: Add sriov and udp tunnel ndo support for the uplink repOr Gerlitz
Some of the sriov ndo calls are needed also on the switchdev mode - e.g setup VF mac and reading vport stats. Add them to the uplink rep netdev ops. Same for the UDP tunnel ones, need them there to identify offloaded udp tunnel ports. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-12-17net/mlx5e: Handle port mtu/link, dcb and lag for uplink repsOr Gerlitz
Take care of setup/teardown for the port link, dcb, lag as well as dealing with port mtu and carrier for e-switch uplink representors. This is achieved by adding a dedicated profile instance for uplink representors which includes the enable/disable and more profile routines which are invoked by the general mlx5e code for netdev attach/detach. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-12-17net/mlx5e: Uninstantiate esw manager vport netdev on switchdev modeOr Gerlitz
Now, when we have a dedicated uplink representor, the netdev instance set over the esw manager vport (PF) is of no-use. As such, remove it once we're on switchdev mode and get it back to life when off switchdev. This is done by reloading the Ethernet interface as well (we already do that for the IB interface) from the eswitch code while going in/out of switchdev mode. The Eth add/remove entries are modified to act differently when called in switchdev mode. In this case we only deal with registration of the eth vport representors. The rep netdevices are created from the eswitch call to load the registered eth representors. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-12-17net/mlx5e: Remove leftover code from the PF netdev being uplink repOr Gerlitz
Remove some last leftovers from using the PF netdev as the e-switch uplink representor. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-12-17net/mlx5e: Use dedicated uplink vport netdev representorOr Gerlitz
Currently, when running in sriov switchdev mode, we are using the PF netdevice as the uplink representor, this is problematic from few aspects: - will break when the PF isn't eswitch manager (e.g smart NIC env) - misalignment with other NIC switchdev drivers - makes us have and maintain special code, hurts the driver quality/robustness - which in turn opens the door for future bugs As of each and all of the above, we move to have a dedicated netdev representor for the uplink vport in a similar manner done for for the VF vports. This includes the following: 1. have an uplink rep netdev as we have for VF reps 2. all reps use same load/unload functions 3. HW stats for uplink based on physical port counters and not vport counters 4. link state for the uplink managed through PAOS and not vport state 5. the uplink rep has sysfs link to the PF PCI function && uses the PF MAC address Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-12-17net/mlx5e: Use single argument for the esw representor build params helperOr Gerlitz
This is prep step towards adding dedicated uplink representor. The patch doesn't change any functionality. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-12-17net/mlx5: E-Switch, Remove redundant reloading of the IB interfaceOr Gerlitz
The reload of the IB interface done on the offloads stop call is redundant b/c we do that on mlx5_eswitch_disable_sriov(), remove it. Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2018-12-17Merge tag 'v4.20-rc7' into patchworkMauro Carvalho Chehab
Linux 4.20-rc7 * tag 'v4.20-rc7': (403 commits) Linux 4.20-rc7 scripts/spdxcheck.py: always open files in binary mode checkstack.pl: fix for aarch64 userfaultfd: check VM_MAYWRITE was set after verifying the uffd is registered fs/iomap.c: get/put the page in iomap_page_create/release() hugetlbfs: call VM_BUG_ON_PAGE earlier in free_huge_page() memblock: annotate memblock_is_reserved() with __init_memblock psi: fix reference to kernel commandline enable arch/sh/include/asm/io.h: provide prototypes for PCI I/O mapping in asm/io.h mm/sparse: add common helper to mark all memblocks present mm: introduce common STRUCT_PAGE_MAX_SHIFT define alpha: fix hang caused by the bootmem removal XArray: Fix xa_alloc when id exceeds max drm/vmwgfx: Protect from excessive execbuf kernel memory allocations v3 MAINTAINERS: Daniel for drm co-maintainer drm/amdgpu: drop fclk/gfxclk ratio setting IB/core: Fix oops in netdev_next_upper_dev_rcu() dm thin: bump target version drm/vmwgfx: remove redundant return ret statement drm/i915: Flush GPU relocs harder for gen3 ...
2018-12-17xen/pciback: Check dev_data before using itRoss Lagerwall
If pcistub_init_device fails, the release function will be called with dev_data set to NULL. Check it before using it to avoid a NULL pointer dereference. Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
2018-12-17Revert "serial: 8250: Fix clearing FIFOs in RS485 mode again"Paul Burton
Commit f6aa5beb45be ("serial: 8250: Fix clearing FIFOs in RS485 mode again") makes a change to FIFO clearing code which its commit message suggests was intended to be specific to use with RS485 mode, however: 1) The change made does not just affect __do_stop_tx_rs485(), it also affects other uses of serial8250_clear_fifos() including paths for starting up, shutting down or auto-configuring a port regardless of whether it's an RS485 port or not. 2) It makes the assumption that resetting the FIFOs is a no-op when FIFOs are disabled, and as such it checks for this case & explicitly avoids setting the FIFO reset bits when the FIFO enable bit is clear. A reading of the PC16550D manual would suggest that this is OK since the FIFO should automatically be reset if it is later enabled, but we support many 16550-compatible devices and have never required this auto-reset behaviour for at least the whole git era. Starting to rely on it now seems risky, offers no benefit, and indeed breaks at least the Ingenic JZ4780's UARTs which reads garbage when the RX FIFO is enabled if we don't explicitly reset it. 3) By only resetting the FIFOs if they're enabled, the behaviour of serial8250_do_startup() during boot now depends on what the value of FCR is before the 8250 driver is probed. This in itself seems questionable and leaves us with FCR=0 & no FIFO reset if the UART was used by 8250_early, otherwise it depends upon what the bootloader left behind. 4) Although the naming of serial8250_clear_fifos() may be unclear, it is clear that callers of it expect that it will disable FIFOs. Both serial8250_do_startup() & serial8250_do_shutdown() contain comments to that effect, and other callers explicitly re-enable the FIFOs after calling serial8250_clear_fifos(). The premise of that patch that disabling the FIFOs is incorrect therefore seems wrong. For these reasons, this reverts commit f6aa5beb45be ("serial: 8250: Fix clearing FIFOs in RS485 mode again"). Signed-off-by: Paul Burton <paul.burton@mips.com> Fixes: f6aa5beb45be ("serial: 8250: Fix clearing FIFOs in RS485 mode again"). Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Daniel Jedrychowski <avistel@gmail.com> Cc: Marek Vasut <marex@denx.de> Cc: linux-mips@vger.kernel.org Cc: linux-serial@vger.kernel.org Cc: stable <stable@vger.kernel.org> # 4.10+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-12-17tty: serial: samsung: Increase maximum baudrateSeung-Woo Kim
This driver can be used to communicate with Bluetooth chip in high-speed UART mode, so increase the maximum baudrate to 3Mbps. Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com> [mszyprow: rephrased commit message] Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>