The commit b3aa14f02254 ("iommu: remove the mapping_error dma_map_ops
method") incorrectly changed the checking from dma_ops_alloc_iova() in
map_sg() causes a crash under memory pressure as dma_ops_alloc_iova()
never return DMA_MAPPING_ERROR on failure but 0, so the error handling
is all wrong.

   kernel BUG at drivers/iommu/iova.c:801!
    Workqueue: kblockd blk_mq_run_work_fn
    RIP: 0010:iova_magazine_free_pfns+0x7d/0xc0
    Call Trace:
     free_cpu_cached_iovas+0xbd/0x150
     alloc_iova_fast+0x8c/0xba
     dma_ops_alloc_iova.isra.6+0x65/0xa0
     map_sg+0x8c/0x2a0
     scsi_dma_map+0xc6/0x160
     pqi_aio_submit_io+0x1f6/0x440 [smartpqi]
     pqi_scsi_queue_command+0x90c/0xdd0 [smartpqi]
     scsi_queue_rq+0x79c/0x1200
     blk_mq_dispatch_rq_list+0x4dc/0xb70
     blk_mq_sched_dispatch_requests+0x249/0x310
     __blk_mq_run_hw_queue+0x128/0x200
     blk_mq_run_work_fn+0x27/0x30
     process_one_work+0x522/0xa10
     worker_thread+0x63/0x5b0
     kthread+0x1d2/0x1f0
     ret_from_fork+0x22/0x40

Fixes: b3aa14f02254 ("iommu: remove the mapping_error dma_map_ops method")
Signed-off-by: Qian Cai <cai@lca.pw>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull NTB updates from Jon Mason:
 "New feature to add support for NTB virtual MSI interrupts, the ability
  to test and use this feature in the NTB transport layer.

  Also, bug fixes for the AMD and Switchtec drivers, as well as some
  general patches"

* tag 'ntb-5.3' of git://github.com/jonmason/ntb: (22 commits)
  NTB: Describe the ntb_msi_test client in the documentation.
  NTB: Add MSI interrupt support to ntb_transport
  NTB: Add ntb_msi_test support to ntb_test
  NTB: Introduce NTB MSI Test Client
  NTB: Introduce MSI library
  NTB: Rename ntb.c to support multiple source files in the module
  NTB: Introduce functions to calculate multi-port resource index
  NTB: Introduce helper functions to calculate logical port number
  PCI/switchtec: Add module parameter to request more interrupts
  PCI/MSI: Support allocating virtual MSI interrupts
  ntb_hw_switchtec: Fix setup MW with failure bug
  ntb_hw_switchtec: Skip unnecessary re-setup of shared memory window for crosslink case
  ntb_hw_switchtec: Remove redundant steps of switchtec_ntb_reinit_peer() function
  NTB: correct ntb_dev_ops and ntb_dev comment typos
  NTB: amd: Silence shift wrapping warning in amd_ntb_db_vector_mask()
  ntb_hw_switchtec: potential shift wrapping bug in switchtec_ntb_init_sndev()
  NTB: ntb_transport: Ensure qp->tx_mw_dma_addr is initaliazed
  NTB: ntb_hw_amd: set peer limit register
  NTB: ntb_perf: Clear stale values in doorbell and command SPAD register
  NTB: ntb_perf: Disable NTB link after clearing peer XLAT registers
  ...

Pull more input updates from Dmitry Torokhov:

 - Apple SPI keyboard and trackpad driver for newer Macs

 - ALPS driver will ignore trackpoint-only devices to give the
   trackpoint driver a chance to handle them properly

 - another Lenovo is switched over to SMbus from PS/2

 - assorted driver fixups.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: alps - fix a mismatch between a condition check and its comment
  Input: psmouse - fix build error of multiple definition
  Input: applespi - remove set but not used variables 'sts'
  Input: add Apple SPI keyboard and trackpad driver
  Input: alps - don't handle ALPS cs19 trackpoint-only device
  Input: hyperv-keyboard - remove dependencies on PAGE_SIZE for ring buffer
  Input: adp5589 - initialize GPIO controller parent device
  Input: iforce - remove empty multiline comments
  Input: synaptics - fix misuse of strlcpy
  Input: auo-pixcir-ts - switch to using  devm_add_action_or_reset()
  Input: gtco - bounds check collection indent level
  Input: mtk-pmic-keys - add of_node_put() before return
  Input: sun4i-lradc-keys - add of_node_put() before return
  Input: synaptics - whitelist Lenovo T580 SMBus intertouch

Pull SCSI fixes from James Bottomley:
 "This is the final round of mostly small fixes in our initial submit.

  It's mostly minor fixes and driver updates. The only change of note is
  adding a virt_boundary_mask to the SCSI host and host template to
  parametrise this for NVMe devices instead of having them do a call in
  slave_alloc. It's a fairly straightforward conversion except in the
  two NVMe handling drivers that didn't set it who now have a virtual
  infinity parameter added"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (24 commits)
  scsi: megaraid_sas: set an unlimited max_segment_size
  scsi: mpt3sas: set an unlimited max_segment_size for SAS 3.0 HBAs
  scsi: IB/srp: set virt_boundary_mask in the scsi host
  scsi: IB/iser: set virt_boundary_mask in the scsi host
  scsi: storvsc: set virt_boundary_mask in the scsi host template
  scsi: ufshcd: set max_segment_size in the scsi host template
  scsi: core: take the DMA max mapping size into account
  scsi: core: add a host / host template field for the virt boundary
  scsi: core: Fix race on creating sense cache
  scsi: sd_zbc: Fix compilation warning
  scsi: libfc: fix null pointer dereference on a null lport
  scsi: zfcp: fix GCC compiler warning emitted with -Wmaybe-uninitialized
  scsi: zfcp: fix request object use-after-free in send path causing wrong traces
  scsi: zfcp: fix request object use-after-free in send path causing seqno errors
  scsi: megaraid_sas: Update driver version to 07.710.50.00
  scsi: megaraid_sas: Add module parameter for FW Async event logging
  scsi: megaraid_sas: Enable msix_load_balance for Invader and later controllers
  scsi: megaraid_sas: Fix calculation of target ID
  scsi: lpfc: reduce stack size with CONFIG_GCC_PLUGIN_STRUCTLEAK_VERBOSE
  scsi: devinfo: BLIST_TRY_VPD_PAGES for SanDisk Cruzer Blade
  ...

Pull more Kbuild updates from Masahiro Yamada:

 - match the directory structure of the linux-libc-dev package to that
   of Debian-based distributions

 - fix incorrect include/config/auto.conf generation when Kconfig
   creates it along with the .config file

 - remove misleading $(AS) from documents

 - clean up precious tag files by distclean instead of mrproper

 - add a new coccinelle patch for devm_platform_ioremap_resource
   migration

 - refactor module-related scripts to read modules.order instead of
   $(MODVERDIR)/*.mod files to get the list of created modules

 - remove MODVERDIR

 - update list of header compile-test

 - add -fcf-protection=none flag to avoid conflict with the retpoline
   flags when CONFIG_RETPOLINE=y

 - misc cleanups

* tag 'kbuild-v5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (25 commits)
  kbuild: add -fcf-protection=none when using retpoline flags
  kbuild: update compile-test header list for v5.3-rc1
  kbuild: split out *.mod out of {single,multi}-used-m rules
  kbuild: remove 'prepare1' target
  kbuild: remove the first line of *.mod files
  kbuild: create *.mod with full directory path and remove MODVERDIR
  kbuild: export_report: read modules.order instead of .tmp_versions/*.mod
  kbuild: modpost: read modules.order instead of $(MODVERDIR)/*.mod
  kbuild: modsign: read modules.order instead of $(MODVERDIR)/*.mod
  kbuild: modinst: read modules.order instead of $(MODVERDIR)/*.mod
  scsi: remove pointless $(MODVERDIR)/$(obj)/53c700.ver
  kbuild: remove duplication from modules.order in sub-directories
  kbuild: get rid of kernel/ prefix from in-tree modules.{order,builtin}
  kbuild: do not create empty modules.order in the prepare stage
  coccinelle: api: add devm_platform_ioremap_resource script
  kbuild: compile-test headers listed in header-test-m as well
  kbuild: remove unused hostcc-option
  kbuild: remove tag files by distclean instead of mrproper
  kbuild: add --hash-style= and --build-id unconditionally
  kbuild: get rid of misleading $(AS) from documents
  ...

Prepare second round of input updates for 5.3 merge window.

Pull ARM Devicetree updates from Olof Johansson:
 "We continue to see a lot of new material. I've highlighted some of it
  below, but there's been more beyond that as well.

  One of the sweeping changes is that many boards have seen their ARM
  Mali GPU devices added to device trees, since the DRM drivers have now
  been merged.

  So, with the caveat that I have surely missed several great
  contributions, here's a collection of the material this time around:

  New SoCs:

   - Mediatek mt8183 (4x Cortex-A73 + 4x Cortex-A53)

   - TI J721E (2x Cortex-A72 + 3x Cortex-R5F + 3 DSPs + MMA)

   - Amlogic G12B (4x Cortex-A73 + 2x Cortex-A53)

  New Boards / platforms:

   - Aspeed BMC support for a number of new server platforms

   - Kontron SMARC SoM (several i.MX6 versions)

   - Novtech's Meerkat96 (i.MX7)

   - ST Micro Avenger96 board

   - Hardkernel ODROID-N2 (Amlogic G12B)

   - Purism Librem5 devkit (i.MX8MQ)

   - Google Cheza (Qualcomm SDM845)

   - Qualcomm Dragonboard 845c (Qualcomm SDM845)

   - Hugsun X99 TV Box (Rockchip RK3399)

   - Khadas Edge/Edge-V/Captain (Rockchip RK3399)

  Updated / expanded boards and platforms:

   - Renesas r7s9210 has a lot of new peripherals added

   - Fixes and polish for Rockchip-based Chromebooks

   - Amlogic G12A has a lot of peripherals added

   - Nvidia Jetson Nano sees various fixes and improvements, and is now
     at feature parity with TX1"

* tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (586 commits)
  ARM: dts: gemini: Set DIR-685 SPI CS as active low
  ARM: dts: exynos: Adjust buck[78] regulators to supported values on Arndale Octa
  ARM: dts: exynos: Adjust buck[78] regulators to supported values on Odroid XU3 family
  ARM: dts: exynos: Move Mali400 GPU node to "/soc"
  ARM: dts: exynos: Fix imprecise abort on Mali GPU probe on Exynos4210
  arm64: dts: qcom: qcs404: Add missing space for cooling-cells property
  arm64: dts: rockchip: Fix USB3 Type-C on rk3399-sapphire
  arm64: dts: rockchip: Update DWC3 modules on RK3399 SoCs
  arm64: dts: rockchip: enable rk3328 watchdog clock
  ARM: dts: rockchip: add display nodes for rk322x
  ARM: dts: rockchip: fix vop iommu-cells on rk322x
  arm64: dts: rockchip: Add support for Hugsun X99 TV Box
  arm64: dts: rockchip: Define values for the IPA governor for rock960
  arm64: dts: rockchip: Fix multiple thermal zones conflict in rk3399.dtsi
  arm64: dts: rockchip: add core dtsi file for RK3399Pro SoCs
  arm64: dts: rockchip: improve rk3328-roc-cc rgmii performance.
  Revert "ARM: dts: rockchip: set PWM delay backlight settings for Minnie"
  ARM: dts: rockchip: Configure BT_DEV_WAKE in on rk3288-veyron
  arm64: dts: qcom: sdm845-cheza: add initial cheza dt
  ARM: dts: msm8974-FP2: Add vibration motor
  ...

Pull ARM SoC-related driver updates from Olof Johansson:
 "Various driver updates for platforms and a couple of the small driver
  subsystems we merge through our tree:

   - A driver for SCU (system control) on NXP i.MX8QXP

   - Qualcomm Always-on Subsystem messaging driver (AOSS QMP)

   - Qualcomm PM support for MSM8998

   - Support for a newer version of DRAM PHY driver for Broadcom (DPFE)

   - Reset controller support for Bitmain BM1880

   - TI SCI (System Control Interface) support for CPU control on AM654
     processors

   - More TI sysc refactoring and rework"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (84 commits)
  reset: remove redundant null check on pointer dev
  soc: rockchip: work around clang warning
  dt-bindings: reset: imx7: Fix the spelling of 'indices'
  soc: imx: Add i.MX8MN SoC driver support
  soc: aspeed: lpc-ctrl: Fix probe error handling
  soc: qcom: geni: Add support for ACPI
  firmware: ti_sci: Fix gcc unused-but-set-variable warning
  firmware: ti_sci: Use the correct style for SPDX License Identifier
  soc: imx8: Use existing of_root directly
  soc: imx8: Fix potential kernel dump in error path
  firmware/psci: psci_checker: Park kthreads before stopping them
  memory: move jedec_ddr.h from include/memory to drivers/memory/
  memory: move jedec_ddr_data.c from lib/ to drivers/memory/
  MAINTAINERS: Remove myself as qcom maintainer
  soc: aspeed: lpc-ctrl: make parameter optional
  soc: qcom: apr: Don't use reg for domain id
  soc: qcom: fix QCOM_AOSS_QMP dependency and build errors
  memory: tegra: Fix -Wunused-const-variable
  firmware: tegra: Early resume BPMP
  soc/tegra: Select pinctrl for Tegra194
  ...

Pull ARM SoC platform updates from Olof Johansson:
 "SoC platform changes. Main theme this merge window:

   - The Netx platform (Netx 100/500) platform is removed by Linus
     Walleij-- the SoC doesn't have active maintainers with hardware,
     and in discussions with the vendor the agreement was that it's OK
     to remove.

   - Russell King has a series of patches that cleans up and refactors
     SA1101 and RiscPC support"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (47 commits)
  ARM: stm32: use "depends on" instead of "if" after prompt
  ARM: sa1100: convert to common clock framework
  ARM: exynos: Cleanup cppcheck shifting warning
  ARM: pxa/lubbock: remove lubbock_set_misc_wr() from global view
  ARM: exynos: Only build MCPM support if used
  arm: add missing include platform-data/atmel.h
  ARM: davinci: Use GPIO lookup table for DA850 LEDs
  ARM: OMAP2: drop explicit assembler architecture
  ARM: use arch_extension directive instead of arch argument
  ARM: imx: Switch imx7d to imx-cpufreq-dt for speed-grading
  ARM: bcm: Enable PINCTRL for ARCH_BRCMSTB
  ARM: bcm: Enable ARCH_HAS_RESET_CONTROLLER for ARCH_BRCMSTB
  ARM: riscpc: enable chained scatterlist support
  ARM: riscpc: reduce IRQ handling code
  ARM: riscpc: move RiscPC assembly files from arch/arm/lib to mach-rpc
  ARM: riscpc: parse video information from tagged list
  ARM: riscpc: add ecard quirk for Atomwide 3port serial card
  MAINTAINERS: mvebu: Add git entry
  soc: ti: pm33xx: Add a print while entering RTC only mode with DDR in self-refresh
  ARM: OMAP2+: Make some variables static
  ...

Pull drm fixes from Daniel Vetter:
 "Dave is back in shape, but now family got it so I'm doing the pull.
  Two things worthy of note:

   - nouveau feature pull was way too late, Dave&me decided to not take
     that, so Ben spun up a pull with just the fixes.

   - after some chatting with the arm display maintainers we decided to
     change a bit how that's maintained, for more oversight/review and
     cross vendor collab.

  More details below:

  nouveau:
   - bugfixes
   - TU116 enabling (minor iteration) :w

  amdgpu:
   - large pile of fixes for new hw support this release (navi, vega20)
   - audio hotplug fix
   - bunch of corner cases and small fixes all over for amdgpu/kfd

  komeda:
   - back out some new properties (from this merge window) that needs
     more pondering.

  bochs:
   - fb pitch setup

  core:
   - a new panel quirk
   - misc fixes"

* tag 'drm-next-2019-07-19' of git://anongit.freedesktop.org/drm/drm: (73 commits)
  drm/nouveau/secboot/gp102-: remove WAR for SEC2 RTOS start bug
  drm/nouveau/flcn/gp102-: improve implementation of bind_context() on SEC2/GSP
  drm/nouveau: fix memory leak in nouveau_conn_reset()
  drm/nouveau/dmem: missing mutex_lock in error path
  drm/nouveau/hwmon: return EINVAL if the GPU is powered down for sensors reads
  drm/nouveau: fix bogus GPL-2 license header
  drm/nouveau: fix bogus GPL-2 license header
  drm/nouveau/i2c: Enable i2c pads & busses during preinit
  drm/nouveau/disp/tu102-: wire up scdc parameter setter
  drm/nouveau/core: recognise TU116 chipset
  drm/nouveau/kms: disallow dual-link harder if hdmi connection detected
  drm/nouveau/disp/nv50-: fix center/aspect-corrected scaling
  drm/nouveau/disp/nv50-: force scaler for any non-default LVDS/eDP modes
  drm/nouveau/mcp89/mmu: Use mcp77_mmu_new instead of g84_mmu_new on MCP89.
  drm/amd/display: init res_pool dccg_ref, dchub_ref with xtalin_freq
  drm/amdgpu/pm: remove check for pp funcs in freq sysfs handlers
  drm/amd/display: Force uclk to max for every state
  drm/amdkfd: Remove GWS from process during uninit
  drm/amd/amdgpu: Fix offset for vmid selection in debugfs interface
  drm/amd/powerplay: update vega20 driver if to fit latest SMU firmware
  ...