android11-5.4
27 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Greg Kroah-Hartman
|
fa46997961 |
This is the 5.4.48 stable release
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Merge 5.4.48 into android-5.4-stable
Changes in 5.4.48
ACPI: GED: use correct trigger type field in _Exx / _Lxx handling
drm/amdgpu: fix and cleanup amdgpu_gem_object_close v4
ath10k: Fix the race condition in firmware dump work queue
drm: bridge: adv7511: Extend list of audio sample rates
media: staging: imgu: do not hold spinlock during freeing mmu page table
media: imx: imx7-mipi-csis: Cleanup and fix subdev pad format handling
crypto: ccp -- don't "select" CONFIG_DMADEVICES
media: vicodec: Fix error codes in probe function
media: si2157: Better check for running tuner in init
objtool: Ignore empty alternatives
spi: spi-mem: Fix Dual/Quad modes on Octal-capable devices
drm/amdgpu: Init data to avoid oops while reading pp_num_states.
arm64/kernel: Fix range on invalidating dcache for boot page tables
libbpf: Fix memory leak and possible double-free in hashmap__clear
spi: pxa2xx: Apply CS clk quirk to BXT
x86,smap: Fix smap_{save,restore}() alternatives
sched/fair: Refill bandwidth before scaling
net: atlantic: make hw_get_regs optional
net: ena: fix error returning in ena_com_get_hash_function()
efi/libstub/x86: Work around LLVM ELF quirk build regression
ath10k: remove the max_sched_scan_reqs value
arm64: cacheflush: Fix KGDB trap detection
media: staging: ipu3: Fix stale list entries on parameter queue failure
rtw88: fix an issue about leak system resources
spi: dw: Zero DMA Tx and Rx configurations on stack
ACPICA: Dispatcher: add status checks
block: alloc map and request for new hardware queue
arm64: insn: Fix two bugs in encoding 32-bit logical immediates
block: reset mapping if failed to update hardware queue count
drm: rcar-du: Set primary plane zpos immutably at initializing
lockdown: Allow unprivileged users to see lockdown status
ixgbe: Fix XDP redirect on archs with PAGE_SIZE above 4K
platform/x86: dell-laptop: don't register micmute LED if there is no token
MIPS: Loongson: Build ATI Radeon GPU driver as module
Bluetooth: Add SCO fallback for invalid LMP parameters error
kgdb: Disable WARN_CONSOLE_UNLOCKED for all kgdb
kgdb: Prevent infinite recursive entries to the debugger
pmu/smmuv3: Clear IRQ affinity hint on device removal
ACPI/IORT: Fix PMCG node single ID mapping handling
mips: Fix cpu_has_mips64r1/2 activation for MIPS32 CPUs
spi: dw: Enable interrupts in accordance with DMA xfer mode
clocksource: dw_apb_timer: Make CPU-affiliation being optional
clocksource: dw_apb_timer_of: Fix missing clockevent timers
media: dvbdev: Fix tuner->demod media controller link
btrfs: account for trans_block_rsv in may_commit_transaction
btrfs: do not ignore error from btrfs_next_leaf() when inserting checksums
ARM: 8978/1: mm: make act_mm() respect THREAD_SIZE
batman-adv: Revert "disable ethtool link speed detection when auto negotiation off"
ice: Fix memory leak
ice: Fix for memory leaks and modify ICE_FREE_CQ_BUFS
mmc: meson-mx-sdio: trigger a soft reset after a timeout or CRC error
Bluetooth: btmtkuart: Improve exception handling in btmtuart_probe()
spi: dw: Fix Rx-only DMA transfers
x86/kvm/hyper-v: Explicitly align hcall param for kvm_hyperv_exit
net: vmxnet3: fix possible buffer overflow caused by bad DMA value in vmxnet3_get_rss()
x86: fix vmap arguments in map_irq_stack
staging: android: ion: use vmap instead of vm_map_ram
ath10k: fix kernel null pointer dereference
media: staging/intel-ipu3: Implement lock for stream on/off operations
spi: Respect DataBitLength field of SpiSerialBusV2() ACPI resource
brcmfmac: fix wrong location to get firmware feature
regulator: qcom-rpmh: Fix typos in pm8150 and pm8150l
tools api fs: Make xxx__mountpoint() more scalable
e1000: Distribute switch variables for initialization
dt-bindings: display: mediatek: control dpi pins mode to avoid leakage
drm/mediatek: set dpi pin mode to gpio low to avoid leakage current
audit: fix a net reference leak in audit_send_reply()
media: dvb: return -EREMOTEIO on i2c transfer failure.
media: platform: fcp: Set appropriate DMA parameters
MIPS: Make sparse_init() using top-down allocation
ath10k: add flush tx packets for SDIO chip
Bluetooth: btbcm: Add 2 missing models to subver tables
audit: fix a net reference leak in audit_list_rules_send()
Drivers: hv: vmbus: Always handle the VMBus messages on CPU0
dpaa2-eth: fix return codes used in ndo_setup_tc
netfilter: nft_nat: return EOPNOTSUPP if type or flags are not supported
selftests/bpf: Fix memory leak in extract_build_id()
net: bcmgenet: set Rx mode before starting netif
net: bcmgenet: Fix WoL with password after deep sleep
lib/mpi: Fix 64-bit MIPS build with Clang
exit: Move preemption fixup up, move blocking operations down
sched/core: Fix illegal RCU from offline CPUs
drivers/perf: hisi: Fix typo in events attribute array
iocost_monitor: drop string wrap around numbers when outputting json
net: lpc-enet: fix error return code in lpc_mii_init()
selinux: fix error return code in policydb_read()
drivers: net: davinci_mdio: fix potential NULL dereference in davinci_mdio_probe()
media: cec: silence shift wrapping warning in __cec_s_log_addrs()
net: allwinner: Fix use correct return type for ndo_start_xmit()
powerpc/spufs: fix copy_to_user while atomic
libertas_tf: avoid a null dereference in pointer priv
xfs: clean up the error handling in xfs_swap_extents
Crypto/chcr: fix for ccm(aes) failed test
MIPS: Truncate link address into 32bit for 32bit kernel
mips: cm: Fix an invalid error code of INTVN_*_ERR
kgdb: Fix spurious true from in_dbg_master()
xfs: reset buffer write failure state on successful completion
xfs: fix duplicate verification from xfs_qm_dqflush()
platform/x86: intel-vbtn: Use acpi_evaluate_integer()
platform/x86: intel-vbtn: Split keymap into buttons and switches parts
platform/x86: intel-vbtn: Do not advertise switches to userspace if they are not there
platform/x86: intel-vbtn: Also handle tablet-mode switch on "Detachable" and "Portable" chassis-types
iwlwifi: avoid debug max amsdu config overwriting itself
nvme: refine the Qemu Identify CNS quirk
nvme-pci: align io queue count with allocted nvme_queue in nvme_probe
nvme-tcp: use bh_lock in data_ready
ath10k: Remove msdu from idr when management pkt send fails
wcn36xx: Fix error handling path in 'wcn36xx_probe()'
net: qed*: Reduce RX and TX default ring count when running inside kdump kernel
drm/mcde: dsi: Fix return value check in mcde_dsi_bind()
mt76: avoid rx reorder buffer overflow
md: don't flush workqueue unconditionally in md_open
raid5: remove gfp flags from scribble_alloc()
iocost: don't let vrate run wild while there's no saturation signal
veth: Adjust hard_start offset on redirect XDP frames
net/mlx5e: IPoIB, Drop multicast packets that this interface sent
rtlwifi: Fix a double free in _rtl_usb_tx_urb_setup()
mwifiex: Fix memory corruption in dump_station
kgdboc: Use a platform device to handle tty drivers showing up late
x86/boot: Correct relocation destination on old linkers
sched: Defend cfs and rt bandwidth quota against overflow
mips: MAAR: Use more precise address mask
mips: Add udelay lpj numbers adjustment
crypto: stm32/crc32 - fix ext4 chksum BUG_ON()
crypto: stm32/crc32 - fix run-time self test issue.
crypto: stm32/crc32 - fix multi-instance
drm/amd/powerpay: Disable gfxoff when setting manual mode on picasso and raven
drm/amdgpu: Sync with VM root BO when switching VM to CPU update mode
selftests/bpf: CONFIG_IPV6_SEG6_BPF required for test_seg6_loop.o
x86/mm: Stop printing BRK addresses
MIPS: tools: Fix resource leak in elf-entry.c
m68k: mac: Don't call via_flush_cache() on Mac IIfx
btrfs: improve global reserve stealing logic
btrfs: qgroup: mark qgroup inconsistent if we're inherting snapshot to a new qgroup
macvlan: Skip loopback packets in RX handler
PCI: Don't disable decoding when mmio_always_on is set
MIPS: Fix IRQ tracing when call handle_fpe() and handle_msa_fpe()
bcache: fix refcount underflow in bcache_device_free()
mmc: sdhci-msm: Set SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 quirk
staging: greybus: sdio: Respect the cmd->busy_timeout from the mmc core
mmc: via-sdmmc: Respect the cmd->busy_timeout from the mmc core
ice: fix potential double free in probe unrolling
ixgbe: fix signed-integer-overflow warning
iwlwifi: mvm: fix aux station leak
mmc: sdhci-esdhc-imx: fix the mask for tuning start point
spi: dw: Return any value retrieved from the dma_transfer callback
cpuidle: Fix three reference count leaks
platform/x86: hp-wmi: Convert simple_strtoul() to kstrtou32()
platform/x86: intel-hid: Add a quirk to support HP Spectre X2 (2015)
platform/x86: intel-vbtn: Only blacklist SW_TABLET_MODE on the 9 / "Laptop" chasis-type
platform/x86: asus_wmi: Reserve more space for struct bias_args
libbpf: Fix perf_buffer__free() API for sparse allocs
bpf: Fix map permissions check
bpf: Refactor sockmap redirect code so its easy to reuse
bpf: Fix running sk_skb program types with ktls
selftests/bpf, flow_dissector: Close TAP device FD after the test
kasan: stop tests being eliminated as dead code with FORTIFY_SOURCE
string.h: fix incompatibility between FORTIFY_SOURCE and KASAN
btrfs: free alien device after device add
btrfs: include non-missing as a qualifier for the latest_bdev
btrfs: send: emit file capabilities after chown
btrfs: force chunk allocation if our global rsv is larger than metadata
btrfs: fix error handling when submitting direct I/O bio
btrfs: fix wrong file range cleanup after an error filling dealloc range
btrfs: fix space_info bytes_may_use underflow after nocow buffered write
btrfs: fix space_info bytes_may_use underflow during space cache writeout
powerpc/mm: Fix conditions to perform MMU specific management by blocks on PPC32.
mm: thp: make the THP mapcount atomic against __split_huge_pmd_locked()
mm: initialize deferred pages with interrupts enabled
mm/pagealloc.c: call touch_nmi_watchdog() on max order boundaries in deferred init
mm: call cond_resched() from deferred_init_memmap()
ima: Fix ima digest hash table key calculation
ima: Switch to ima_hash_algo for boot aggregate
ima: Evaluate error in init_ima()
ima: Directly assign the ima_default_policy pointer to ima_rules
ima: Call ima_calc_boot_aggregate() in ima_eventdigest_init()
ima: Remove __init annotation from ima_pcrread()
evm: Fix possible memory leak in evm_calc_hmac_or_hash()
ext4: fix EXT_MAX_EXTENT/INDEX to check for zeroed eh_max
ext4: fix error pointer dereference
ext4: fix race between ext4_sync_parent() and rename()
PCI: Avoid Pericom USB controller OHCI/EHCI PME# defect
PCI: Avoid FLR for AMD Matisse HD Audio & USB 3.0
PCI: Avoid FLR for AMD Starship USB 3.0
PCI: Add ACS quirk for Intel Root Complex Integrated Endpoints
PCI: vmd: Add device id for VMD device 8086:9A0B
x86/amd_nb: Add Family 19h PCI IDs
PCI: Add Loongson vendor ID
serial: 8250_pci: Move Pericom IDs to pci_ids.h
x86/amd_nb: Add AMD family 17h model 60h PCI IDs
ima: Remove redundant policy rule set in add_rules()
ima: Set again build_ima_appraise variable
PCI: Program MPS for RCiEP devices
e1000e: Disable TSO for buffer overrun workaround
e1000e: Relax condition to trigger reset for ME workaround
carl9170: remove P2P_GO support
media: go7007: fix a miss of snd_card_free
media: cedrus: Program output format during each run
serial: 8250: Avoid error message on reprobe
Bluetooth: hci_bcm: fix freeing not-requested IRQ
b43legacy: Fix case where channel status is corrupted
b43: Fix connection problem with WPA3
b43_legacy: Fix connection problem with WPA3
media: ov5640: fix use of destroyed mutex
clk: mediatek: assign the initial value to clk_init_data of mtk_mux
igb: Report speed and duplex as unknown when device is runtime suspended
hwmon: (k10temp) Add AMD family 17h model 60h PCI match
EDAC/amd64: Add AMD family 17h model 60h PCI IDs
power: vexpress: add suppress_bind_attrs to true
power: supply: core: fix HWMON temperature labels
power: supply: core: fix memory leak in HWMON error path
pinctrl: samsung: Correct setting of eint wakeup mask on s5pv210
pinctrl: samsung: Save/restore eint_mask over suspend for EINT_TYPE GPIOs
gnss: sirf: fix error return code in sirf_probe()
sparc32: fix register window handling in genregs32_[gs]et()
sparc64: fix misuses of access_process_vm() in genregs32_[sg]et()
dm crypt: avoid truncating the logical block size
alpha: fix memory barriers so that they conform to the specification
powerpc/fadump: use static allocation for reserved memory ranges
powerpc/fadump: consider reserved ranges while reserving memory
powerpc/fadump: Account for memory_limit while reserving memory
kernel/cpu_pm: Fix uninitted local in cpu_pm
ARM: tegra: Correct PL310 Auxiliary Control Register initialization
soc/tegra: pmc: Select GENERIC_PINCONF
ARM: dts: exynos: Fix GPIO polarity for thr GalaxyS3 CM36651 sensor's bus
ARM: dts: at91: sama5d2_ptc_ek: fix vbus pin
ARM: dts: s5pv210: Set keep-power-in-suspend for SDHCI1 on Aries
drivers/macintosh: Fix memleak in windfarm_pm112 driver
powerpc/32s: Fix another build failure with CONFIG_PPC_KUAP_DEBUG
powerpc/kasan: Fix issues by lowering KASAN_SHADOW_END
powerpc/kasan: Fix shadow pages allocation failure
powerpc/32: Disable KASAN with pages bigger than 16k
powerpc/64s: Don't let DT CPU features set FSCR_DSCR
powerpc/64s: Save FSCR to init_task.thread.fscr after feature init
kbuild: force to build vmlinux if CONFIG_MODVERSION=y
sunrpc: svcauth_gss_register_pseudoflavor must reject duplicate registrations.
sunrpc: clean up properly in gss_mech_unregister()
mtd: rawnand: Fix nand_gpio_waitrdy()
mtd: rawnand: onfi: Fix redundancy detection check
mtd: rawnand: brcmnand: fix hamming oob layout
mtd: rawnand: diskonchip: Fix the probe error path
mtd: rawnand: sharpsl: Fix the probe error path
mtd: rawnand: ingenic: Fix the probe error path
mtd: rawnand: xway: Fix the probe error path
mtd: rawnand: orion: Fix the probe error path
mtd: rawnand: socrates: Fix the probe error path
mtd: rawnand: oxnas: Fix the probe error path
mtd: rawnand: sunxi: Fix the probe error path
mtd: rawnand: plat_nand: Fix the probe error path
mtd: rawnand: pasemi: Fix the probe error path
mtd: rawnand: mtk: Fix the probe error path
mtd: rawnand: tmio: Fix the probe error path
w1: omap-hdq: cleanup to add missing newline for some dev_dbg
f2fs: fix checkpoint=disable:%u%%
perf probe: Do not show the skipped events
perf probe: Fix to check blacklist address correctly
perf probe: Check address correctness by map instead of _etext
perf symbols: Fix debuginfo search for Ubuntu
perf symbols: Fix kernel maps for kcore and eBPF
Linux 5.4.48
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I9954fb3f08956419e8586bcb9078e604df207fb9
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Wei Yongjun
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f2f18147c7 |
gnss: sirf: fix error return code in sirf_probe()
commit 43d7ce70ae43dd8523754b17f567417e0e75dbce upstream.
Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.
This avoids a use-after-free in case the driver is later unbound.
Fixes:
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Alistair Delva
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51e81764d9 |
ANDROID: gnss: Add command line test driver
This driver enables the "takeover" of a serdev bus device by the GNSS
subsystem. It can be used to test the GNSS subsystem without needing to
write a specific hardware backend.
The new module supports the following parameters:
gnss_cmdline.serdev=driver/port/serdev
gnss_cmdline.type=<protocol number>
An example which allows GNSS to wrap a platform serial8250 port and
advertise NMEA-0183 data is:
gnss_cmdline.serdev=serial8250/serial0/serial0-0
^ ^ ^
driver port serdev
gnss_cmdline.type=0
^
GNSS_TYPE_NMEA
Bug: 146517987
Change-Id: I421386ee4f2ba8f1f0832d9c56a067a600892d3c
Signed-off-by: Alistair Delva <adelva@google.com>
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Thomas Gleixner
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ec8f24b7fa |
treewide: Add SPDX license identifier - Makefile/Kconfig
Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Linus Torvalds
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f678d6da74 |
Char/Misc patches for 5.2-rc1 - part 2
Here is the "real" big set of char/misc driver patches for 5.2-rc1
Loads of different driver subsystem stuff in here, all over the places:
- thunderbolt driver updates
- habanalabs driver updates
- nvmem driver updates
- extcon driver updates
- intel_th driver updates
- mei driver updates
- coresight driver updates
- soundwire driver cleanups and updates
- fastrpc driver updates
- other minor driver updates
- chardev minor fixups
Feels like this tree is getting to be a dumping ground of "small driver
subsystems" these days. Which is fine with me, if it makes things
easier for those subsystem maintainers.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.2-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc update part 2 from Greg KH:
"Here is the "real" big set of char/misc driver patches for 5.2-rc1
Loads of different driver subsystem stuff in here, all over the places:
- thunderbolt driver updates
- habanalabs driver updates
- nvmem driver updates
- extcon driver updates
- intel_th driver updates
- mei driver updates
- coresight driver updates
- soundwire driver cleanups and updates
- fastrpc driver updates
- other minor driver updates
- chardev minor fixups
Feels like this tree is getting to be a dumping ground of "small
driver subsystems" these days. Which is fine with me, if it makes
things easier for those subsystem maintainers.
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.2-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (255 commits)
intel_th: msu: Add current window tracking
intel_th: msu: Add a sysfs attribute to trigger window switch
intel_th: msu: Correct the block wrap detection
intel_th: Add switch triggering support
intel_th: gth: Factor out trace start/stop
intel_th: msu: Factor out pipeline draining
intel_th: msu: Switch over to scatterlist
intel_th: msu: Replace open-coded list_{first,last,next}_entry variants
intel_th: Only report useful IRQs to subdevices
intel_th: msu: Start handling IRQs
intel_th: pci: Use MSI interrupt signalling
intel_th: Communicate IRQ via resource
intel_th: Add "rtit" source device
intel_th: Skip subdevices if their MMIO is missing
intel_th: Rework resource passing between glue layers and core
intel_th: SPDX-ify the documentation
intel_th: msu: Fix single mode with IOMMU
coresight: funnel: Support static funnel
dt-bindings: arm: coresight: Unify funnel DT binding
coresight: replicator: Add new device id for static replicator
...
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Kirill Smelkov
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c5bf68fe0c |
*: convert stream-like files from nonseekable_open -> stream_open
Using scripts/coccinelle/api/stream_open.cocci added in |
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Ondrej Jirman
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7cc10c5cb1 |
gnss: ubx: add u-blox,neo-6m compatible
Add compatible for u-blox NEO-6M GPS module. Signed-off-by: Ondrej Jirman <megous@megous.com> Signed-off-by: Johan Hovold <johan@kernel.org> |
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Loys Ollivier
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d4584bbfcf |
gnss: add driver for mediatek receivers
Add driver for serial-connected Mediatek-based GNSS receivers. These devices typically boot transmitting vendor specific NMEA output sequences. The serial port bit rate is read from the device tree "current-speed". Note that the driver uses the generic GNSS serial implementation and therefore essentially only manages power abstracted into three power states: ACTIVE, STANDBY, and OFF. For mediatek receivers with a main supply and no enable-gpios, this simply means that the main supply is disabled in STANDBY and OFF (the optional backup supply is kept enabled while the driver is bound). Note that the timepulse-support is left unimplemented. Signed-off-by: Loys Ollivier <lollivier@baylibre.com> [ johan: rename backup supply ] Signed-off-by: Johan Hovold <johan@kernel.org> |
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Loys Ollivier
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625239d4ad |
gnss: add mtk receiver type support
Add an MTK (Mediatek) type to the "GNSS_TYPE" attribute. Note that MTK receivers support a subset of NMEA 0183 with vendor extensions. Signed-off-by: Loys Ollivier <lollivier@baylibre.com> Signed-off-by: Johan Hovold <johan@kernel.org> |
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Andreas Kemnade
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8fafef42c7 |
gnss: sirf: add a separate supply for a lna
Devices might have a separate lna between antenna input of the gps chip and the antenna which might have a separate supply. Signed-off-by: Andreas Kemnade <andreas@kemnade.info> Signed-off-by: Johan Hovold <johan@kernel.org> |
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Andreas Kemnade
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ccd0e4963f |
gnss: sirf: add support for configurations without wakeup signal
Some Wi2Wi devices do not have a wakeup output, so device state can only be indirectly detected by looking whether there is communication over the serial lines. This approach requires a report cycle set to a value less than 2 seconds to be reliable. Signed-off-by: Andreas Kemnade <andreas@kemnade.info> [ johan: simplify sirf_set_active(), style changes ] Signed-off-by: Johan Hovold <johan@kernel.org> |
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Andreas Kemnade
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196d918460 |
gnss: sirf: write data to gnss only when the gnss device is open
The api forbids writing data there otherwise. Prepare for the serdev_open()/close() being a part of sirf_set_active. Signed-off-by: Andreas Kemnade <andreas@kemnade.info> Signed-off-by: Johan Hovold <johan@kernel.org> |
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Johan Hovold
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9f1623fdb3 |
gnss: sirf: drop redundant double negation
The active flag is of type bool so drop the redundant double negation when storing the gpio state. Signed-off-by: Johan Hovold <johan@kernel.org> |
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Johan Hovold
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4ceda5f654 |
gnss: sirf: force hibernate mode on probe
Make sure to put the receiver in hibernate mode in case it is already active during probe in order to avoid wasting power until first open or suspend. This can happen, for example, after a reset or non-clean shutdown, and possibly also due to glitches during power-on. Reported-by: Andreas Kemnade <andreas@kemnade.info> Signed-off-by: Johan Hovold <johan@kernel.org> |
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Johan Hovold
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82f844c225 |
gnss: sirf: fix premature wakeup interrupt enable
Make sure the receiver is powered (and booted) before enabling the
wakeup interrupt to avoid spurious interrupts due to a floating input.
Similarly, disable the interrupt before powering off on probe errors and
on unbind.
Fixes:
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Greg Kroah-Hartman
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9c96f401e9 |
Merge 4.20-rc6 into tty-next
We want the TTY changes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Johan Hovold
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06fd9ab12b |
gnss: sirf: fix activation retry handling
Fix activation helper which would return -ETIMEDOUT even if the last
retry attempt was successful.
Also change the semantics of the retries variable so that it actually
holds the number of retries (rather than tries).
Fixes:
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Johan Hovold
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0bbf0a88fa |
serdev: make synchronous write return bytes written
Make the synchronous serdev_device_write() helper behave analogous to the asynchronous serdev_device_write_buf() by returning the number of bytes written (or rather buffered) also on timeout. This will allow drivers to distinguish the case where data was partially written from the case where no data was written. Also update the only two users that checked the return value. Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Johan Hovold
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1decef3704 |
gnss: sirf: fix synchronous write timeout
Passing a timeout of zero to the synchronous serdev_device_write()
helper does currently not imply to wait forever (unlike passing zero to
serdev_device_wait_until_sent()). Instead, if there's insufficient
room in the write buffer, we'd end up with an incomplete write.
Fixes:
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Johan Hovold
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56a6c72683 |
gnss: serial: fix synchronous write timeout
Passing a timeout of zero to the synchronous serdev_device_write()
helper does currently not imply to wait forever (unlike passing zero to
serdev_device_wait_until_sent()). Instead, if there's insufficient
room in the write buffer, we'd end up with an incomplete write.
Fixes:
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Dan Carpenter
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d9995a0fab |
gnss: fix potential error pointer dereference
The gnss_allocate_device() function returns a mix of NULL and error
pointers on error. It should only return one or the other. Since the
callers both check for NULL, I've modified it to return NULL on error.
Fixes:
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Colin Ian King
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55570f1a44 |
gnss: ubx: make struct ubx_gserial_ops static
The structure ubx_gserial_ops is local to the source and does not need to be in global scope, so make it static. Cleans up sparse warning: symbol 'ubx_gserial_ops' was not declared. Should it be static? Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Johan Hovold
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10f146639f |
gnss: add receiver type support
Add a "type" device attribute and a "GNSS_TYPE" uevent variable which can be used to determine the type of a GNSS receiver. The currently identified types reflect the protocol(s) supported by a receiver: "NMEA" NMEA 0183 "SiRF" SiRF Binary "UBX" UBX Note that both SiRF and UBX type receivers typically support a subset of NMEA 0183 with vendor extensions (e.g. to allow switching to the vendor protocol). Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Johan Hovold
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d2efbbd18b |
gnss: add driver for sirfstar-based receivers
Add driver for serial-connected SiRFstar-based GNSS receivers. These devices typically boot into hibernate mode from which they can be woken using a pulse on the ON_OFF input pin. Once active, a pulse on the same ON_OFF pin is used to put the device back into hibernate mode. The current state can be determined by sampling the WAKEUP output. Hardware configurations where WAKEUP has been connected to ON_OFF (and where an initial WAKEUP pulse during boot is sufficient to have the device boot into active mode) are also supported. In this case, device power is managed using the main-supply regulator only. Note that configurations where WAKEUP is left not connected, so that the device power state can only indirectly be determined using the I/O interface, is currently not supported. It should be fairly straight-forward to extend the current implementation with such support however (and this this is the main reason for not using the generic serial implementation for this driver). Note that timepulse-support is left unimplemented. Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Johan Hovold
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1ad69f10e3 |
gnss: add driver for u-blox receivers
Add driver for serial-connected u-blox GNSS receivers. Note that the driver uses the generic GNSS serial implementation and therefore essentially only manages power abstracted into three power states: ACTIVE, STANDBY, and OFF. For u-blox receivers with a main supply and no enable-gpios, this simply means that the main supply is disabled in STANDBY and OFF (the optional backup supply is kept enabled while the driver is bound). Note that timepulse-support is not yet implemented. Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Johan Hovold
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37768b054f |
gnss: add generic serial driver
Add a generic serial GNSS driver (library) which provides a common implementation for the gnss interface and power management (runtime and system suspend). This allows GNSS drivers for specific chip to be implemented by simply providing a set_power() callback to handle three states: ACTIVE, STANDBY and OFF. Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Johan Hovold
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2b6a440351 |
gnss: add GNSS receiver subsystem
Add a new subsystem for GNSS (e.g. GPS) receivers. While GNSS receivers are typically accessed using a UART interface they often also support other I/O interfaces such as I2C, SPI and USB, while yet other devices use iomem or even some form of remote-processor messaging (rpmsg). The new GNSS subsystem abstracts the underlying interface and provides a new "gnss" class type, which exposes a character-device interface (e.g. /dev/gnss0) to user space. This allows GNSS receivers to have a representation in the Linux device model, something which is important not least for power management purposes. Note that the character-device interface provides raw access to whatever protocol the receiver is (currently) using, such as NMEA 0183, UBX or SiRF Binary. These protocols are expected to be continued to be handled by user space for the time being, even if some hybrid solutions are also conceivable (e.g. to have kernel drivers issue management commands). This will still allow for better platform integration by allowing GNSS devices and their resources (e.g. regulators and enable-gpios) to be described by firmware and managed by kernel drivers rather than platform-specific scripts and services. While the current interface is kept minimal, it could be extended using IOCTLs, sysfs or uevents as needs and proper abstraction levels are identified and determined (e.g. for device and feature identification). Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |