We don't need this any more as devices which are consoles and also
platform devices are automatically excluded from binding unless the user
opts into it.
This reverts commit 2fdad105a07232f954c3401f1e2609e548c896e7.
Bug: 146517987
Change-Id: I2b9cc9c13870e5ecccbf04addadd48e59658aee3
Signed-off-by: Alistair Delva <adelva@google.com>
Make the fallback path for claiming platform devices trigger only if a
new module parameter is specified:
serdev_ttyport.pdev_tty_port=ttyS2
Bug: 146517987
Change-Id: Ibf331ad6e6d8712a405921530f217f7122428b13
Signed-off-by: Alistair Delva <adelva@google.com>
Changes in 5.4.23
iommu/qcom: Fix bogus detach logic
ALSA: hda: Use scnprintf() for printing texts for sysfs/procfs
ALSA: hda/realtek - Apply quirk for MSI GP63, too
ALSA: hda/realtek - Apply quirk for yet another MSI laptop
ASoC: codec2codec: avoid invalid/double-free of pcm runtime
ASoC: sun8i-codec: Fix setting DAI data format
tpm: Initialize crypto_id of allocated_banks to HASH_ALGO__LAST
ecryptfs: fix a memory leak bug in parse_tag_1_packet()
ecryptfs: fix a memory leak bug in ecryptfs_init_messaging()
btrfs: handle logged extent failure properly
thunderbolt: Prevent crash if non-active NVMem file is read
USB: misc: iowarrior: add support for 2 OEMed devices
USB: misc: iowarrior: add support for the 28 and 28L devices
USB: misc: iowarrior: add support for the 100 device
e1000e: Use rtnl_lock to prevent race conditions between net and pci/pm
floppy: check FDC index for errors before assigning it
vt: fix scrollback flushing on background consoles
vt: selection, handle pending signals in paste_selection
vt: vt_ioctl: fix race in VT_RESIZEX
staging: android: ashmem: Disallow ashmem memory from being remapped
staging: vt6656: fix sign of rx_dbm to bb_pre_ed_rssi.
xhci: Force Maximum Packet size for Full-speed bulk devices to valid range.
xhci: fix runtime pm enabling for quirky Intel hosts
xhci: apply XHCI_PME_STUCK_QUIRK to Intel Comet Lake platforms
xhci: Fix memory leak when caching protocol extended capability PSI tables - take 2
usb: host: xhci: update event ring dequeue pointer on purpose
USB: core: add endpoint-blacklist quirk
USB: quirks: blacklist duplicate ep on Sound Devices USBPre2
usb: uas: fix a plug & unplug racing
USB: Fix novation SourceControl XL after suspend
USB: hub: Don't record a connect-change event during reset-resume
USB: hub: Fix the broken detection of USB3 device in SMSC hub
usb: dwc2: Fix SET/CLEAR_FEATURE and GET_STATUS flows
usb: dwc3: gadget: Check for IOC/LST bit in TRB->ctrl fields
usb: dwc3: debug: fix string position formatting mixup with ret and len
scsi: Revert "target/core: Inline transport_lun_remove_cmd()"
staging: rtl8188eu: Fix potential security hole
staging: rtl8188eu: Fix potential overuse of kernel memory
staging: rtl8723bs: Fix potential security hole
staging: rtl8723bs: Fix potential overuse of kernel memory
drm/panfrost: perfcnt: Reserve/use the AS attached to the perfcnt MMU context
powerpc/8xx: Fix clearing of bits 20-23 in ITLB miss
powerpc/eeh: Fix deadlock handling dead PHB
powerpc/tm: Fix clearing MSR[TS] in current when reclaiming on signal delivery
powerpc/entry: Fix an #if which should be an #ifdef in entry_32.S
powerpc/hugetlb: Fix 512k hugepages on 8xx with 16k page size
powerpc/hugetlb: Fix 8M hugepages on 8xx
arm64: memory: Add missing brackets to untagged_addr() macro
jbd2: fix ocfs2 corrupt when clearing block group bits
x86/ima: use correct identifier for SetupMode variable
x86/mce/amd: Publish the bank pointer only after setup has succeeded
x86/mce/amd: Fix kobject lifetime
x86/cpu/amd: Enable the fixed Instructions Retired counter IRPERF
serial: 8250: Check UPF_IRQ_SHARED in advance
tty/serial: atmel: manage shutdown in case of RS485 or ISO7816 mode
tty: serial: imx: setup the correct sg entry for tx dma
tty: serial: qcom_geni_serial: Fix RX cancel command failure
serdev: ttyport: restore client ops on deregistration
MAINTAINERS: Update drm/i915 bug filing URL
ACPI: PM: s2idle: Check fixed wakeup events in acpi_s2idle_wake()
Revert "ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()"
mm/memcontrol.c: lost css_put in memcg_expand_shrinker_maps()
nvme-multipath: Fix memory leak with ana_log_buf
genirq/irqdomain: Make sure all irq domain flags are distinct
mm/vmscan.c: don't round up scan size for online memory cgroup
mm/sparsemem: pfn_to_page is not valid yet on SPARSEMEM
lib/stackdepot.c: fix global out-of-bounds in stack_slabs
mm: Avoid creating virtual address aliases in brk()/mmap()/mremap()
drm/amdgpu/soc15: fix xclk for raven
drm/amdgpu/gfx9: disable gfxoff when reading rlc clock
drm/amdgpu/gfx10: disable gfxoff when reading rlc clock
drm/nouveau/kms/gv100-: Re-set LUT after clearing for modesets
drm/i915: Wean off drm_pci_alloc/drm_pci_free
drm/i915: Update drm/i915 bug filing URL
sched/psi: Fix OOB write when writing 0 bytes to PSI files
KVM: nVMX: Don't emulate instructions in guest mode
KVM: x86: don't notify userspace IOAPIC on edge-triggered interrupt EOI
ext4: fix a data race in EXT4_I(inode)->i_disksize
ext4: add cond_resched() to __ext4_find_entry()
ext4: fix potential race between online resizing and write operations
ext4: fix potential race between s_group_info online resizing and access
ext4: fix potential race between s_flex_groups online resizing and access
ext4: fix mount failure with quota configured as module
ext4: rename s_journal_flag_rwsem to s_writepages_rwsem
ext4: fix race between writepages and enabling EXT4_EXTENTS_FL
KVM: nVMX: Refactor IO bitmap checks into helper function
KVM: nVMX: Check IO instruction VM-exit conditions
KVM: nVMX: clear PIN_BASED_POSTED_INTR from nested pinbased_ctls only when apicv is globally disabled
KVM: nVMX: handle nested posted interrupts when apicv is disabled for L1
KVM: apic: avoid calculating pending eoi from an uninitialized val
btrfs: destroy qgroup extent records on transaction abort
btrfs: fix bytes_may_use underflow in prealloc error condtition
btrfs: reset fs_root to NULL on error in open_ctree
btrfs: do not check delayed items are empty for single transaction cleanup
Btrfs: fix btrfs_wait_ordered_range() so that it waits for all ordered extents
Btrfs: fix race between shrinking truncate and fiemap
btrfs: don't set path->leave_spinning for truncate
Btrfs: fix deadlock during fast fsync when logging prealloc extents beyond eof
Revert "dmaengine: imx-sdma: Fix memory leak"
drm/i915/gt: Detect if we miss WaIdleLiteRestore
drm/i915/execlists: Always force a context reload when rewinding RING_TAIL
drm/i915/gvt: more locking for ppgtt mm LRU list
drm/bridge: tc358767: fix poll timeouts
drm/i915/gt: Protect defer_request() from new waiters
drm/msm/dpu: fix BGR565 vs RGB565 confusion
scsi: Revert "RDMA/isert: Fix a recently introduced regression related to logout"
scsi: Revert "target: iscsi: Wait for all commands to finish before freeing a session"
usb: gadget: composite: Fix bMaxPower for SuperSpeedPlus
usb: dwc2: Fix in ISOC request length checking
staging: rtl8723bs: fix copy of overlapping memory
staging: greybus: use after free in gb_audio_manager_remove_all()
ASoC: atmel: fix atmel_ssc_set_audio link failure
ASoC: fsl_sai: Fix exiting path on probing failure
ecryptfs: replace BUG_ON with error handling code
iommu/vt-d: Fix compile warning from intel-svm.h
crypto: rename sm3-256 to sm3 in hash_algo_name
genirq/proc: Reject invalid affinity masks (again)
bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill
arm64: lse: Fix LSE atomics with LLVM
io_uring: fix __io_iopoll_check deadlock in io_sq_thread
ALSA: rawmidi: Avoid bit fields for state flags
ALSA: seq: Avoid concurrent access to queue flags
ALSA: seq: Fix concurrent access to queue current tick/time
netfilter: xt_hashlimit: limit the max size of hashtable
rxrpc: Fix call RCU cleanup using non-bh-safe locks
io_uring: prevent sq_thread from spinning when it should stop
ata: ahci: Add shutdown to freeze hardware resources of ahci
xen: Enable interrupts when calling _cond_resched()
net/mlx5e: Reset RQ doorbell counter before moving RQ state from RST to RDY
net/mlx5: Fix sleep while atomic in mlx5_eswitch_get_vepa
net/mlx5e: Fix crash in recovery flow without devlink reporter
s390/kaslr: Fix casts in get_random
s390/mm: Explicitly compare PAGE_DEFAULT_KEY against zero in storage_key_init_range
bpf: Selftests build error in sockmap_basic.c
ASoC: SOF: Intel: hda: Add iDisp4 DAI
Linux 5.4.23
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I1d60f06bcb6ee74e5601976c7af79153c41af11c
commit 0c5aae5927 upstream.
The serdev tty-port controller driver should reset the tty-port client
operations also on deregistration to avoid a NULL-pointer dereference in
case the port is later re-registered as a normal tty device.
Note that this can only happen with tty drivers such as 8250 which have
statically allocated port structures that can end up being reused and
where a later registration would not register a serdev controller (e.g.
due to registration errors or if the devicetree has been changed in
between).
Specifically, this can be an issue for any statically defined ports that
would be registered by 8250 core when an 8250 driver is being unbound.
Fixes: bed35c6dfa ("serdev: add a tty port controller driver")
Cc: stable <stable@vger.kernel.org> # 4.11
Reported-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20200210145730.22762-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Changes in 5.4.12
chardev: Avoid potential use-after-free in 'chrdev_open()'
i2c: fix bus recovery stop mode timing
powercap: intel_rapl: add NULL pointer check to rapl_mmio_cpu_online()
usb: chipidea: host: Disable port power only if previously enabled
ALSA: usb-audio: Apply the sample rate quirk for Bose Companion 5
ALSA: hda/realtek - Add new codec supported for ALCS1200A
ALSA: hda/realtek - Set EAPD control to default for ALC222
ALSA: hda/realtek - Add quirk for the bass speaker on Lenovo Yoga X1 7th gen
tpm: Revert "tpm_tis: reserve chip for duration of tpm_tis_core_init"
tpm: Revert "tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts"
tpm: Revert "tpm_tis_core: Turn on the TPM before probing IRQ's"
tpm: Handle negative priv->response_len in tpm_common_read()
rtc: sun6i: Add support for RTC clocks on R40
kernel/trace: Fix do not unregister tracepoints when register sched_migrate_task fail
tracing: Have stack tracer compile when MCOUNT_INSN_SIZE is not defined
tracing: Change offset type to s32 in preempt/irq tracepoints
HID: Fix slab-out-of-bounds read in hid_field_extract
HID: uhid: Fix returning EPOLLOUT from uhid_char_poll
HID: hidraw: Fix returning EPOLLOUT from hidraw_poll
HID: hid-input: clear unmapped usages
Input: add safety guards to input_set_keycode()
Input: input_event - fix struct padding on sparc64
drm/i915: Add Wa_1408615072 and Wa_1407596294 to icl,ehl
Revert "drm/amdgpu: Set no-retry as default."
drm/sun4i: tcon: Set RGB DCLK min. divider based on hardware model
drm/fb-helper: Round up bits_per_pixel if possible
drm/dp_mst: correct the shifting in DP_REMOTE_I2C_READ
drm/i915: Add Wa_1407352427:icl,ehl
drm/i915/gt: Mark up virtual engine uabi_instance
IB/hfi1: Adjust flow PSN with the correct resync_psn
can: kvaser_usb: fix interface sanity check
can: gs_usb: gs_usb_probe(): use descriptors of current altsetting
can: tcan4x5x: tcan4x5x_can_probe(): get the device out of standby before register access
can: mscan: mscan_rx_poll(): fix rx path lockup when returning from polling to irq mode
can: can_dropped_invalid_skb(): ensure an initialized headroom in outgoing CAN sk_buffs
gpiolib: acpi: Turn dmi_system_id table into a generic quirk table
gpiolib: acpi: Add honor_wakeup module-option + quirk mechanism
pstore/ram: Regularize prz label allocation lifetime
staging: vt6656: set usb_set_intfdata on driver fail.
staging: vt6656: Fix non zero logical return of, usb_control_msg
usb: cdns3: should not use the same dev_id for shared interrupt handler
usb: ohci-da8xx: ensure error return on variable error is set
USB-PD tcpm: bad warning+size, PPS adapters
USB: serial: option: add ZLP support for 0x1bc7/0x9010
usb: musb: fix idling for suspend after disconnect interrupt
usb: musb: Disable pullup at init
usb: musb: dma: Correct parameter passed to IRQ handler
staging: comedi: adv_pci1710: fix AI channels 16-31 for PCI-1713
staging: vt6656: correct return of vnt_init_registers.
staging: vt6656: limit reg output to block size
staging: rtl8188eu: Add device code for TP-Link TL-WN727N v5.21
serdev: Don't claim unsupported ACPI serial devices
iommu/vt-d: Fix adding non-PCI devices to Intel IOMMU
tty: link tty and port before configuring it as console
tty: always relink the port
arm64: Move __ARCH_WANT_SYS_CLONE3 definition to uapi headers
arm64: Implement copy_thread_tls
arm: Implement copy_thread_tls
parisc: Implement copy_thread_tls
riscv: Implement copy_thread_tls
xtensa: Implement copy_thread_tls
clone3: ensure copy_thread_tls is implemented
um: Implement copy_thread_tls
staging: vt6656: remove bool from vnt_radio_power_on ret
mwifiex: fix possible heap overflow in mwifiex_process_country_ie()
mwifiex: pcie: Fix memory leak in mwifiex_pcie_alloc_cmdrsp_buf
rpmsg: char: release allocated memory
scsi: bfa: release allocated memory in case of error
rtl8xxxu: prevent leaking urb
ath10k: fix memory leak
HID: hiddev: fix mess in hiddev_open()
USB: Fix: Don't skip endpoint descriptors with maxpacket=0
phy: cpcap-usb: Fix error path when no host driver is loaded
phy: cpcap-usb: Fix flakey host idling and enumerating of devices
netfilter: arp_tables: init netns pointer in xt_tgchk_param struct
netfilter: conntrack: dccp, sctp: handle null timeout argument
netfilter: ipset: avoid null deref when IPSET_ATTR_LINENO is present
drm/i915/gen9: Clear residual context state on context switch
Linux 5.4.12
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ib8604812a0a41f9e3ab36ef238623fc222096fea
commit c5ee0b3104 upstream.
Serdev sub-system claims all ACPI serial devices that are not already
initialised. As a result, no device node is created for serial ports
on certain boards such as the Apollo Lake based UP2. This has the
unintended consequence of not being able to raise the login prompt via
serial connection.
Introduce a blacklist to reject ACPI serial devices that should not be
claimed by serdev sub-system. Add the peripheral ids for Intel HS UART
to the blacklist to bring back serial port on SoCs carrying them.
Cc: stable@vger.kernel.org
Signed-off-by: Punit Agrawal <punit1.agrawal@toshiba.co.jp>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Johan Hovold <johan@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20191219100345.911093-1-punit1.agrawal@toshiba.co.jp
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
After commit 3c996ff8858 ("ANDROID: serdev: add platform device
support") landed, we started seeing boot panics on HiKey960/HiKey.
After some debugging I found the patch is passing a serdev_device->dev
pointer to match(), which expects the dev pointer to be
contained in a platform_device structure instead. When it uses
container_of, it ends up miscast and we get bad values.
Alistair suggested this fix which seems to avoid the issue.
Signed-off-by: John Stultz <john.stultz@linaro.org>
Bug: 146517987
Change-Id: I6354aeb4008fff85264a3c848c6c95fb8ca5b07a
Enables devices on a platform bus, such as serial8250 on the ISA bus, to
be enumerated by the serdev subsystem. This enables further layering by
e.g. the gnss subsystem.
With this in change, these devices can now register with the serdev core
and show up as serdev tty ports (serialX) and child devices (serialX-Y).
serial8250: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a U6_16550A
serial serial0: tty port ttyS0 registered
serial8250: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a U6_16550A
serial serial1: tty port ttyS1 registered
serial8250: ttyS2 at I/O 0x3e8 (irq = 4, base_baud = 115200) is a U6_16550A
serial serial2: tty port ttyS2 registered
serial8250: ttyS3 at I/O 0x2e8 (irq = 3, base_baud = 115200) is a U6_16550A
serial serial3: tty port ttyS3 registered
The modalias shows up like this:
# cat /sys/bus/serial/devices/serial0-0/modalias
platform:serial8250
Bug: 146517987
Change-Id: I3711c9d9ecd66fad638a45a8745e97569ae01791
Signed-off-by: Alistair Delva <adelva@google.com>
There were a few Kconfig and Makefiles under drivers/tty/ that were
missing a SPDX identifier. Fix that up so that automated tools can
properly classify all kernel source files.
Cc: Jiri Slaby <jslaby@suse.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Acked-by: David Sterba <dsterba@suse.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The tty struct holds a pointer to the driver's tty operations so drop
the unnecessary driver dereference when calling tiocmget and tiocmset.
Note that this also makes the calls match the preceding sanity checks as
expected.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Document the asynchronous serdev_device_write_buf() and synchronous
serdev_device_write() functions using kernel-doc.
Specifically, mention that writing data only means that data has been
buffered by the controller, and that the synchronous helper depends on
serdev_device_write_wakeup() being called in the driver write_wakeup()
callback.
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Allow the synchronous serdev_device_write() helper to be interrupted.
This is useful for cases where I/O is performed on behalf of user space
and we don't want to block indefinitely when using flow control.
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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>
Use zero to indicate infinite timeout for the synchronous
serdev_device_write() helper.
This allows drivers to specify an infinite timeout without knowing about
serdev implementation details, while also allowing the same timeout
argument to be used for both serdev_device_write() and
serdev_device_wait_until_sent().
Note that passing zero to the current helper makes no sense; just call
the asynchronous serdev_device_write_buf() directly instead.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In order to open up the required power gate before any operation can be
effectively performed over the serial bus between CPU and serdev, it's
clearly essential to add common attach functions for PM domains to serdev
at the probe phase.
Similarly, the relevant dettach function for the PM domains should be
properly and reversely added at the remove phase.
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Johan Hovold <johan@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: linux-serial@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make sure to free all resources associated with the ida on module
exit.
Fixes: cd6484e183 ("serdev: Introduce new bus for serial attached devices")
Cc: stable <stable@vger.kernel.org> # 4.11
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add support for controller runtime power management to serdev core. This
is needed to allow slave drivers to manage the runtime PM state of the
underlying serial controller when its driver, in turn, implements more
aggressive runtime power management (e.g. using autosuspend).
For some applications, for example, where loss off initial data after a
remote-wakeup event is acceptable or where rx is not used at all,
aggressive serial controller runtime PM may be used without further
involvement of the slave driver. But when this is not the case, the
slave driver must be able to indicate when incoming data is expected in
order to avoid data loss.
To facilitate the common case, where the serial controller power state
is active whenever the port is open (which is the case with just about
every serial driver), and where data loss is not acceptable and cannot
even be prevented by explicit controller runtime power management, an
RPM reference is taken in serdev open and put again at close. This
reference can later be balanced by any serdev driver which wants and/or
can handle aggressive controller runtime PM.
Note that the .ignore_children flag is set for the serdev controller to
allow the underlying hardware to idle when no I/O is expected, regardless
of the slave device RPM state.
Acked-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull tty/staging driver updates from Greg KH:
"Here is the big tty/serial driver update for 4.16-rc1.
The usual number of various serial driver fixes and updates to try to
get them to work with crazy hardware configurations (seriously, how
many different ways are hardware engineers going to come up with to
hook up a simple UART?)
There is also some serdev bugfixes and updates, as well as a
smattering of other small fixes in here.
All have been in the linux-next tree for a while, with no reported
issues"
* tag 'tty-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (65 commits)
tty: serial: exar: Relocate sleep wake-up handling
tty: fix data race between tty_init_dev and flush of buf
serial: imx: fix endless loop during suspend
serial: core: mark port as initialized after successful IRQ change
serdev: only match serdev devices
serdev: do not generate modaliases for controllers
serial: mxs-auart: don't use GPIOF_* with gpiod_get_direction
serial: 8250_dw: Revert "Improve clock rate setting"
MAINTAINERS: Add myself as designated reviewer for 8250_dw
gpio: serial: max310x: Support open-drain configuration for GPIOs
serdev: Fix serdev_uevent failure on ACPI enumerated serdev-controllers
serial: 8250_ingenic: Parse earlycon options
serial: 8250_ingenic: Add support for the JZ4770 SoC
serial: core: Make uart_parse_options take const char* argument
serial: 8250_of: fix return code when probe function fails to get reset
serial: imx: Only wakeup via RTSDEN bit if the system has RTS/CTS
serial: 8250_uniphier: fix error return code in uniphier_uart_probe()
tty: n_gsm: Allow ADM response in addition to UA for control dlci
tty: omap-serial: Fix initial on-boot RTS GPIO level
tty: serial: jsm: Add one check against NULL pointer dereference
...
Pull networking updates from David Miller:
1) Significantly shrink the core networking routing structures. Result
of http://vger.kernel.org/~davem/seoul2017_netdev_keynote.pdf
2) Add netdevsim driver for testing various offloads, from Jakub
Kicinski.
3) Support cross-chip FDB operations in DSA, from Vivien Didelot.
4) Add a 2nd listener hash table for TCP, similar to what was done for
UDP. From Martin KaFai Lau.
5) Add eBPF based queue selection to tun, from Jason Wang.
6) Lockless qdisc support, from John Fastabend.
7) SCTP stream interleave support, from Xin Long.
8) Smoother TCP receive autotuning, from Eric Dumazet.
9) Lots of erspan tunneling enhancements, from William Tu.
10) Add true function call support to BPF, from Alexei Starovoitov.
11) Add explicit support for GRO HW offloading, from Michael Chan.
12) Support extack generation in more netlink subsystems. From Alexander
Aring, Quentin Monnet, and Jakub Kicinski.
13) Add 1000BaseX, flow control, and EEE support to mvneta driver. From
Russell King.
14) Add flow table abstraction to netfilter, from Pablo Neira Ayuso.
15) Many improvements and simplifications to the NFP driver bpf JIT,
from Jakub Kicinski.
16) Support for ipv6 non-equal cost multipath routing, from Ido
Schimmel.
17) Add resource abstration to devlink, from Arkadi Sharshevsky.
18) Packet scheduler classifier shared filter block support, from Jiri
Pirko.
19) Avoid locking in act_csum, from Davide Caratti.
20) devinet_ioctl() simplifications from Al viro.
21) More TCP bpf improvements from Lawrence Brakmo.
22) Add support for onlink ipv6 route flag, similar to ipv4, from David
Ahern.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1925 commits)
tls: Add support for encryption using async offload accelerator
ip6mr: fix stale iterator
net/sched: kconfig: Remove blank help texts
openvswitch: meter: Use 64-bit arithmetic instead of 32-bit
tcp_nv: fix potential integer overflow in tcpnv_acked
r8169: fix RTL8168EP take too long to complete driver initialization.
qmi_wwan: Add support for Quectel EP06
rtnetlink: enable IFLA_IF_NETNSID for RTM_NEWLINK
ipmr: Fix ptrdiff_t print formatting
ibmvnic: Wait for device response when changing MAC
qlcnic: fix deadlock bug
tcp: release sk_frag.page in tcp_disconnect
ipv4: Get the address of interface correctly.
net_sched: gen_estimator: fix lockdep splat
net: macb: Handle HRESP error
net/mlx5e: IPoIB, Fix copy-paste bug in flow steering refactoring
ipv6: addrconf: break critical section in addrconf_verify_rtnl()
ipv6: change route cache aging logic
i40e/i40evf: Update DESC_NEEDED value to reflect larger value
bnxt_en: cleanup DIM work on device shutdown
...
Pull MFD updates from Lee Jones:
"New Drivers:
- Add support for RAVE Supervisory Processor
Moved drivers:
- Move Realtek Card Reader Driver to Misc
New Device Support:
- Add support for Pinctrl to axp20x
New Functionality:
- Add resume support to atmel-flexcom
Fix-ups:
- Split MFD (mfd) and userspace handlers (platform) in cros_ec
- Fix trivial (whitespace, spelling) issue(s) in pcf50633-core
- Clean-up error handling in ab8500-debugfs
- General tidying up in tmio_core
- Kconfig fix-ups for qcom-pm8xxx
- Licensing changes (SPDX) to stm32-lptimer, stm32-timers
- Device Tree fixups in mc13xxx
- Simplify/remove unused code in cros_ec_spi, axp20x, ti_am335x_tscadc,
kempld-core, intel_soc_pmic_core.c, ab8500-debugfs"
* tag 'mfd-next-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (32 commits)
mfd: lpc_ich: Do not touch SPI-NOR write protection bit on Apollo Lake
mfd: axp20x: Mark axp288 CHRG_BAK_CTRL register volatile
mfd: ab8500: Introduce DEFINE_SHOW_ATTRIBUTE() macro
atmel_flexcom: Support resuming after a chip reset
mfd: Remove duplicate includes
dt-bindings: mfd: mc13xxx: Add the unit address to sysled
mfd: stm32: Adopt SPDX identifier
mfd: axp20x: Add pinctrl cell for AXP813
mfd: pm8xxx: Make elegible for COMPILE_TEST
mfd: kempld-core: Use resource_size function on resource object
mfd: tmio: Move register macros to tmio_core.c
mfd: cros ec: spi: Simplify delay handling between SPI messages
mfd: palmas: Assign the right powerhold mask for tps65917
mfd: ab8500-debugfs: Use common error handling code in ab8500_print_modem_registers()
mfd: ti_am335x_tscadc: Remove redundant assignment to node
mfd: pcf50633: Fix spelling mistake: 'Falied' -> 'Failed'
dt-bindings: watchdog: Add bindings for RAVE SP watchdog driver
watchdog: Add RAVE SP watchdog driver
mfd: Add driver for RAVE Supervisory Processor
serdev: Introduce devm_serdev_device_open()
...
Only serdev devices (a.k.a. clients or slaves) are bound to drivers so
bail out early from match() in case the device is not a serdev device
(i.e. if it's a serdev controller).
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Serdev controllers are not bound to any drivers and it therefore makes
no sense to generate modaliases for them.
This has already been fixed separately for ACPI controllers for which
uevent errors were also being logged during probe due to the missing
ACPI companions (from which ACPI modaliases are generated).
This patch moves the modalias handling from the bus type to the client
device type. Specifically, this means that only serdev devices (a.k.a.
clients or slaves) will have have MODALIAS fields in their uevent
environments and corresponding modalias sysfs attributes.
Also add the missing static keyword for the modalias device attribute
when moving the definition.
Reported-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ACPI enumerated serdev-controllers do not have an ACPI companion, the ACPI
companion belongs to the serdev-device child of the serdev-controller, not
to the controller itself. This was causing serdev_uevent to always return
-ENODEV when called on a serdev-controller leading to errors like these:
kernel: serial serial0: uevent: failed to send synthetic uevent
being logged. This commit modifies serdev_uevent to directly return 0
when called on an ACPI enumerated serdev-controller fixing this.
Note: I do not think that setting a modalias on a devicetree enumerated
serdev-controller makes sense either. So perhaps the !dev->of_node part of
the check can be dropped too, but I'm not entirely sure that doing this
on devicetree too is correct.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Serdev does not use the file abstraction and specifically there will
never be anyone polling a file descriptor for POLLOUT events.
Just use plain wake_up_interruptible() in the write_wakeup callback and
document why it's there.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Serdev currently does not support hangups so make sure to set CLOCAL to
prevent loss of carrier from triggering one.
Note however that not all tty drivers honour CLOCAL.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Release the tty lock once tty-driver open returns to make it clear that
it does not protect neither tty->termios or the serport flags.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make sure to hold the tty lock as required when calling tty-driver
close() (e.g. to avoid racing with hangup()).
Note that the serport active flag is currently set under the lock at
controller open, but really isn't protected by it.
Fixes: cd6484e183 ("serdev: Introduce new bus for serial attached devices")
Signed-off-by: Johan Hovold <johan@kernel.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make sure to use a properly refcounted tty_struct in write_wake up to
avoid dereferencing a NULL-pointer when a port is being hung up.
Fixes: bed35c6dfa ("serdev: add a tty port controller driver")
Cc: stable <stable@vger.kernel.org> # 4.11
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The receive_buf tty-port callback should return the number of bytes
accepted and must specifically never return a negative errno (or a value
larger than the buffer size) to the tty layer.
A serdev driver not providing a receive_buf callback would currently
cause the flush_to_ldisc() worker to spin in a tight loop when the tty
buffer pointers are incremented with -EINVAL (-22) after data has been
received.
A serdev driver occasionally returning a negative errno (or a too large
byte count) could cause information leaks or crashes when accessing
memory outside the tty buffers in consecutive callbacks.
Fixes: cd6484e183 ("serdev: Introduce new bus for serial attached devices")
Cc: stable <stable@vger.kernel.org> # 4.11
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Now that the SPDX tag is in all tty files, that identifies the license
in a specific and legally-defined manner. So the extra GPL text wording
can be removed as it is no longer needed at all.
This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text. And there's unneeded stuff
like the address (sometimes incorrect) for the FSF which is never
needed.
No copyright headers or other non-license-description text was removed.
Cc: Rob Herring <robh@kernel.org>
Cc: Jiri Slaby <jslaby@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reorder controller initialisation so that in the unlikely event that id
allocation fails, we don't end up releasing id 0 in the destructor.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Serdev currently only supports a single slave device, but the required
sanity checks to prevent further registration attempts were missing.
If a serial-port node has two child nodes with compatible properties,
the OF code would try to register two slave devices using the same id
and name. Driver core will not allow this (and there will be loud
complaints), but the controller's slave pointer would already have been
set to address of the soon to be deallocated second struct
serdev_device. As the first slave device remains registered, this can
lead to later use-after-free issues when the slave callbacks are
accessed.
Note that while the serdev registration helpers are exported, they are
typically only called by serdev core. Any other (out-of-tree) callers
must serialise registration and deregistration themselves.
Fixes: cd6484e183 ("serdev: Introduce new bus for serial attached devices")
Cc: stable <stable@vger.kernel.org> # 4.11
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add missing error handling for tty-driver open() which may fail (e.g. if
resource allocation fails or if a port is being disconnected).
Note that close() must be called also in case of failed open() and that
the operation sanity check is amended to catch buggy drivers.
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The tty-driver open routine is mandatory, but the serdev
tty-port-controller implementation did not treat it as such and would
instead fall back to calling tty_port_open() directly.
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch allows SerDev module to manage serial devices declared as
attached to an UART in ACPI table.
acpi_serdev_add_device() callback will only take into account entries
without enumerated flag set. This flags is set for all entries during
ACPI scan, except for SPI and I2C serial devices, and for UART with
2nd patch in the series.
Check if a serdev device as been allocated during acpi_walk_namespace()
to prevent serdev controller registration instead of the tty-class device.
Signed-off-by: Frédéric Danis <frederic.danis.oss@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Reviewed-by: Johan Hovold <johan@kernel.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Amend the Serial device bus Kconfig entries to clarify that you most
likely also want to enable TTY port controller support, and make
SERIAL_DEV_CTRL_TTYPORT default to Y (when bus support is enabled).
Note that the TTY port controller is currently the only in-kernel
serdev controller implementation.
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull driver core updates from Greg KH:
"Here is the big driver core update for 4.13-rc1.
The large majority of this is a lot of cleanup of old fields in the
driver core structures and their remaining usages in random drivers.
All of those fixes have been reviewed by the various subsystem
maintainers. There's also some small firmware updates in here, a new
kobject uevent api interface that makes userspace interaction easier,
and a few other minor things.
All of these have been in linux-next for a long while with no reported
issues"
* tag 'driver-core-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (56 commits)
arm: mach-rpc: ecard: fix build error
zram: convert remaining CLASS_ATTR() to CLASS_ATTR_RO()
driver-core: remove struct bus_type.dev_attrs
powerpc: vio_cmo: use dev_groups and not dev_attrs for bus_type
powerpc: vio: use dev_groups and not dev_attrs for bus_type
USB: usbip: convert to use DRIVER_ATTR_RW
s390: drivers: convert to use DRIVER_ATTR_RO/WO
platform: thinkpad_acpi: convert to use DRIVER_ATTR_RO/RW
pcmcia: ds: convert to use DRIVER_ATTR_RO
wireless: ipw2x00: convert to use DRIVER_ATTR_RW
net: ehea: convert to use DRIVER_ATTR_RO
net: caif: convert to use DRIVER_ATTR_RO
TTY: hvc: convert to use DRIVER_ATTR_RW
PCI: pci-driver: convert to use DRIVER_ATTR_WO
IB: nes: convert to use DRIVER_ATTR_RW
HID: hid-core: convert to use DRIVER_ATTR_RO and drv_groups
arm: ecard: fix dev_groups patch typo
tty: serdev: use dev_groups and not dev_attrs for bus_type
sparc: vio: use dev_groups and not dev_attrs for bus_type
hid: intel-ish-hid: use dev_groups and not dev_attrs for bus_type
...
The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.
Cc: Rob Herring <robh@kernel.org>
Cc: Jiri Slaby <jslaby@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
