Commit Graph

1136096 Commits

Author SHA1 Message Date
Darrick J. Wong adc9c2e5a7 iomap: add a tracepoint for mappings returned by map_blocks
Add a new tracepoint so we can see what mapping the filesystem returns
to writeback a dirty page.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
2022-10-02 11:42:19 -07:00
Darrick J. Wong 3d5f3ba1ac iomap: iomap: fix memory corruption when recording errors during writeback
Every now and then I see this crash on arm64:

Unable to handle kernel NULL pointer dereference at virtual address 00000000000000f8
Buffer I/O error on dev dm-0, logical block 8733687, async page read
Mem abort info:
  ESR = 0x0000000096000006
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000006
  CM = 0, WnR = 0
user pgtable: 64k pages, 42-bit VAs, pgdp=0000000139750000
[00000000000000f8] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000, pmd=0000000000000000
Internal error: Oops: 96000006 [#1] PREEMPT SMP
Buffer I/O error on dev dm-0, logical block 8733688, async page read
Dumping ftrace buffer:
Buffer I/O error on dev dm-0, logical block 8733689, async page read
   (ftrace buffer empty)
XFS (dm-0): log I/O error -5
Modules linked in: dm_thin_pool dm_persistent_data
XFS (dm-0): Metadata I/O Error (0x1) detected at xfs_trans_read_buf_map+0x1ec/0x590 [xfs] (fs/xfs/xfs_trans_buf.c:296).
 dm_bio_prison
XFS (dm-0): Please unmount the filesystem and rectify the problem(s)
XFS (dm-0): xfs_imap_lookup: xfs_ialloc_read_agi() returned error -5, agno 0
 dm_bufio dm_log_writes xfs nft_chain_nat xt_REDIRECT nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT
potentially unexpected fatal signal 6.
 nf_reject_ipv6
potentially unexpected fatal signal 6.
 ipt_REJECT nf_reject_ipv4
CPU: 1 PID: 122166 Comm: fsstress Tainted: G        W          6.0.0-rc5-djwa #rc5 3004c9f1de887ebae86015f2677638ce51ee7
 rpcsec_gss_krb5 auth_rpcgss xt_tcpudp ip_set_hash_ip ip_set_hash_net xt_set nft_compat ip_set_hash_mac ip_set nf_tables
Hardware name: QEMU KVM Virtual Machine, BIOS 1.5.1 06/16/2021
pstate: 60001000 (nZCv daif -PAN -UAO -TCO -DIT +SSBS BTYPE=--)
 ip_tables
pc : 000003fd6d7df200
 x_tables
lr : 000003fd6d7df1ec
 overlay nfsv4
CPU: 0 PID: 54031 Comm: u4:3 Tainted: G        W          6.0.0-rc5-djwa #rc5 3004c9f1de887ebae86015f2677638ce51ee7405
Hardware name: QEMU KVM Virtual Machine, BIOS 1.5.1 06/16/2021
Workqueue: writeback wb_workfn
sp : 000003ffd9522fd0
 (flush-253:0)
pstate: 60401005 (nZCv daif +PAN -UAO -TCO -DIT +SSBS BTYPE=--)
pc : errseq_set+0x1c/0x100
x29: 000003ffd9522fd0 x28: 0000000000000023 x27: 000002acefeb6780
x26: 0000000000000005 x25: 0000000000000001 x24: 0000000000000000
x23: 00000000ffffffff x22: 0000000000000005
lr : __filemap_set_wb_err+0x24/0xe0
 x21: 0000000000000006
sp : fffffe000f80f760
x29: fffffe000f80f760 x28: 0000000000000003 x27: fffffe000f80f9f8
x26: 0000000002523000 x25: 00000000fffffffb x24: fffffe000f80f868
x23: fffffe000f80fbb0 x22: fffffc0180c26a78 x21: 0000000002530000
x20: 0000000000000000 x19: 0000000000000000 x18: 0000000000000000

x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
x14: 0000000000000001 x13: 0000000000470af3 x12: fffffc0058f70000
x11: 0000000000000040 x10: 0000000000001b20 x9 : fffffe000836b288
x8 : fffffc00eb9fd480 x7 : 0000000000f83659 x6 : 0000000000000000
x5 : 0000000000000869 x4 : 0000000000000005 x3 : 00000000000000f8
x20: 000003fd6d740020 x19: 000000000001dd36 x18: 0000000000000001
x17: 000003fd6d78704c x16: 0000000000000001 x15: 000002acfac87668
x2 : 0000000000000ffa x1 : 00000000fffffffb x0 : 00000000000000f8
Call trace:
 errseq_set+0x1c/0x100
 __filemap_set_wb_err+0x24/0xe0
 iomap_do_writepage+0x5e4/0xd5c
 write_cache_pages+0x208/0x674
 iomap_writepages+0x34/0x60
 xfs_vm_writepages+0x8c/0xcc [xfs 7a861f39c43631f15d3a5884246ba5035d4ca78b]
x14: 0000000000000000 x13: 2064656e72757465 x12: 0000000000002180
x11: 000003fd6d8a82d0 x10: 0000000000000000 x9 : 000003fd6d8ae288
x8 : 0000000000000083 x7 : 00000000ffffffff x6 : 00000000ffffffee
x5 : 00000000fbad2887 x4 : 000003fd6d9abb58 x3 : 000003fd6d740020
x2 : 0000000000000006 x1 : 000000000001dd36 x0 : 0000000000000000
CPU: 1 PID: 122167 Comm: fsstress Tainted: G        W          6.0.0-rc5-djwa #rc5 3004c9f1de887ebae86015f2677638ce51ee7
 do_writepages+0x90/0x1c4
 __writeback_single_inode+0x4c/0x4ac
Hardware name: QEMU KVM Virtual Machine, BIOS 1.5.1 06/16/2021
 writeback_sb_inodes+0x214/0x4ac
 wb_writeback+0xf4/0x3b0
pstate: 60001000 (nZCv daif -PAN -UAO -TCO -DIT +SSBS BTYPE=--)
 wb_workfn+0xfc/0x580
 process_one_work+0x1e8/0x480
pc : 000003fd6d7df200
 worker_thread+0x78/0x430

This crash is a result of iomap_writepage_map encountering some sort of
error during writeback and wanting to set that error code in the file
mapping so that fsync will report it.  Unfortunately, the code
dereferences folio->mapping after unlocking the folio, which means that
another thread could have removed the page from the page cache
(writeback doesn't hold the invalidation lock) and give it to somebody
else.

At best we crash the system like above; at worst, we corrupt memory or
set an error on some other unsuspecting file while failing to record the
problems with *this* file.  Regardless, fix the problem by reporting the
error to the inode mapping.

NOTE: Commit 598ecfbaa7 lifted the XFS writeback code to iomap, so
this fix should be backported to XFS in the 4.6-5.4 kernels in addition
to iomap in the 5.5-5.19 kernels.

Fixes: e735c00794 ("iomap: Convert iomap_add_to_ioend() to take a folio") # 5.17 onward
Fixes: 598ecfbaa7 ("iomap: lift the xfs writeback code to iomap") # 5.5-5.16, needs backporting
Fixes: 150d5be09c ("xfs: remove xfs_cancel_ioend") # 4.6-5.4, needs backporting
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2022-10-02 11:42:19 -07:00
Linus Torvalds a962b54e16 Add missing DT bindings for STM32 and a resource leak fix for DaVinci
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Merge tag 'i2c-for-6.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Add missing DT bindings for STM32 and a resource leak fix for DaVinci"

* tag 'i2c-for-6.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: davinci: fix PM disable depth imbalance in davinci_i2c_probe
  dt-bindings: i2c: st,stm32-i2c: Document wakeup-source property
  dt-bindings: i2c: st,stm32-i2c: Document interrupt-names property
2022-10-02 10:00:45 -07:00
Linus Torvalds febae48afe Misc fixes:
- Fix a PMU enumeration/initialization bug on Intel Alder Lake CPUs.
  - Fix KVM guest PEBS register handling.
  - Fix race/reentry bug in perf_output_read_group() reading of PMU counters.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-urgent-2022-10-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull misc perf fixes from Ingo Molnar:

 - Fix a PMU enumeration/initialization bug on Intel Alder Lake CPUs

 - Fix KVM guest PEBS register handling

 - Fix race/reentry bug in perf_output_read_group() reading of PMU
   counters

* tag 'perf-urgent-2022-10-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/core: Fix reentry problem in perf_output_read_group()
  perf/x86/core: Completely disable guest PEBS via guest's global_ctrl
  perf/x86/intel: Fix unchecked MSR access error for Alder Lake N
2022-10-02 09:41:27 -07:00
Linus Torvalds 534b0abc62 - Add the respective UP last level cache mask accessors in order not to
cause segfaults when lscpu accesses their representation in sysfs
 
 - Fix for a race in the alternatives batch patching machinery when
 kprobes are set
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Merge tag 'x86_urgent_for_v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Add the respective UP last level cache mask accessors in order not to
   cause segfaults when lscpu accesses their representation in sysfs

 - Fix for a race in the alternatives batch patching machinery when
   kprobes are set

* tag 'x86_urgent_for_v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cacheinfo: Add a cpu_llc_shared_mask() UP variant
  x86/alternative: Fix race in try_get_desc()
2022-10-02 09:30:35 -07:00
David S. Miller 9d43507319 Merge branch 'tc-bind_class-hook'
Zhengchao Shao says:

====================
refactor duplicate codes in bind_class hook function

All the bind_class callback duplicate the same logic, so we can refactor
them. First, ensure n arg not empty before call bind_class hook function.
Then, add tc_cls_bind_class() helper. Last, use tc_cls_bind_class() in
filter.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2022-10-02 16:07:17 +01:00
Zhengchao Shao cc9039a134 net: sched: use tc_cls_bind_class() in filter
Use tc_cls_bind_class() in filter.

Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-10-02 16:07:17 +01:00
Zhengchao Shao 402963e34a net: sched: cls_api: introduce tc_cls_bind_class() helper
All the bind_class callback duplicate the same logic, this patch
introduces tc_cls_bind_class() helper for common usage.

Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-10-02 16:07:17 +01:00
Zhengchao Shao 4e6263ec8b net: sched: ensure n arg not empty before call bind_class
All bind_class callbacks are directly returned when n arg is empty.
Therefore, bind_class is invoked only when n arg is not empty.

Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-10-02 16:07:17 +01:00
Oleksandr Shamray 525dd5aed6 hwmon: (pmbus/mp2888) Fix sensors readouts for MPS Multi-phase mp2888 controller
Fix scale factors for reading MPS Multi-phase mp2888 controller.
Fixed sensors:
    - PIN/POUT: based on vendor documentation, set bscale factor 0.5W/LSB
    - IOUT: based on vendor documentation, set scale factor 0.25 A/LSB

Fixes: e4db7719d0 ("hwmon: (pmbus) Add support for MPS Multi-phase mp2888 controller")
Signed-off-by: Oleksandr Shamray <oleksandrs@nvidia.com>
Reviewed-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20220929121642.63051-1-oleksandrs@nvidia.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-10-02 08:07:11 -07:00
Colin Ian King 1793bed346 dt-bindings: hwmon: sensirion,shtc1: Clean up spelling mistakes and grammar
The yaml text contains some minor spelling mistakes and grammar issues,
clean these up.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220928213139.63819-1-colin.i.king@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-10-02 08:02:24 -07:00
Zeng Heng 1e4aa3e18d hwmon: (nct6683) remove unused variable in nct6683_create_attr_group
When enable 'unused-but-set-variable' compile
warning option, it would raise warning as below:

drivers/hwmon/nct6683.c:415:9:
warning: variable 'j' set but not used [-Wunused-but-set-variable]

Variable 'j' in nct6683_create_attr_group is unused,
so remove it and simplify the 'for' loop.

Signed-off-by: Zeng Heng <zengheng4@huawei.com>
Link: https://lore.kernel.org/r/20220927114352.2498079-1-zengheng4@huawei.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2022-10-02 08:01:18 -07:00
Sergio Paracuellos 9023e05b7a dt-bindings: watchdog: migrate mt7621 text bindings to YAML
Soc Mt7621 Watchdog bindings used text format, so migrate them to YAML.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220926162549.805108-1-sergio.paracuellos@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:48 +02:00
Vladimir Panteleev 081574f76d watchdog: sp5100_tco: Add "action" module parameter
Allow configuring the "action" bit, as documented in [1].

Previously, the only action supported by this module was to reset the
system (0).  It can now be configured to power off (1) instead.

[1]: https://www.amd.com/system/files/TechDocs/44413.pdf

Signed-off-by: Vladimir Panteleev <git@vladimir.panteleev.md>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220920092721.7686-1-git@vladimir.panteleev.md
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:48 +02:00
Alice Guo 8ed2dc4855 watchdog: imx93: add watchdog timer on imx93
The WDOG clocks are sourced from lpo_clk, and lpo_clk is the fixed
32KHz. TOVAL contains the 16-bit value used to set the timeout period of
the watchdog. When the timeout period exceeds 2 seconds, the value
written to the TOVAL register is larger than 16-bit can represent.
Enabling watchdog prescaler can solve this problem.

Two points need to be aware of:
1. watchdog prescaler enables a fixed 256 pre-scaling of watchdog
counter reference clock
2. reconfiguration takes about 55ms on imx93

Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Alice Guo <alice.guo@nxp.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220825083256.14565-8-alice.guo@oss.nxp.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:47 +02:00
Jason Liu cef6bc98d5 watchdog: imx7ulp_wdt: init wdog when it was active
Paired with suspend, we can only init wdog again when it was active
and ping it once to avoid the watchdog timeout after it resumed.

Signed-off-by: Jason Liu <jason.hui.liu@nxp.com>
Signed-off-by: Alice Guo <alice.guo@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Tested-by: Jacky Bai <ping.bai@nxp.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220825083256.14565-7-alice.guo@oss.nxp.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:46 +02:00
Ye Li c32b53f965 watchdog: imx7ulp_wdt: Handle wdog reconfigure failure
Current driver may meet reconfigure failure caused by below reasons:

1. The wdog on iMX7ULP has different behavior after RCS valid. It needs
   to wait more than 2.5 wdog clock for clock sync before next
   reconfiguration, while imx8ulp wdog does not need such delay.

2. After unlock, there is 128 bus clock window opened for reconfiguration,
   but on iMX8ULP, the HW can't guarantee the latency. So it is possible
   the window is closed before the writing arrives to wdog.

3. If the PRES is enabled, the RCS valid time becomes x256 to the time
   of PRES disabled. It is about 1715ms on iMX8ULP. So We have to increase
   the RCS timeout and can't wait it in IRQ disabled.

The patch updates the driver to handle failures

1. Using different wait for unlock and RCS. Unlock valid time is very short
   and only related to bus clock. It must be in IRQ disabled to avoid
   being interrupted in 128 clock window. But for RCS time, it is longer
   and ok for IRQ enabled.

2. Add retry for any reconfigure failure with default 5 times.

3. Add "fsl,imx8ulp-wdt" compatile string for iMX8ULP and afterwards
   platform which don't need more 2.5 wdog clock after RCS valid.
   For imx7ulp, add post delay of 2.5 clock after RCS valid.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Alice Guo <alice.guo@nxp.com>
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220825083256.14565-6-alice.guo@oss.nxp.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:46 +02:00
Ye Li 52c4d05113 watchdog: imx7ulp_wdt: Fix RCS timeout issue
According to measure on i.MX7ULP and i.MX8ULP, the RCS done needs
about 3400us and 6700us respectively. So current 20us timeout is
not enough. When reconfiguring is on-going, unlock and configure CS
will lead to unknown result.

Increase the wait timeout value to 10ms and check the return value
of RCS wait to fix the issue

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Alice Guo <alice.guo@nxp.com>
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Acked-by: Jason Liu <jason.hui.liu@nxp.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220825083256.14565-5-alice.guo@oss.nxp.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:45 +02:00
Ye Li e809daec17 watchdog: imx7ulp_wdt: Check CMD32EN in wdog init
When bootloader has enabled the CMD32EN bit, switch to use 32bits
unlock command to unlock the CS register. Using 32bits command will
help on avoiding 16 bus cycle window violation for two 16 bits
commands.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Alice Guo <alice.guo@nxp.com>
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Acked-by: Jason Liu <jason.hui.liu@nxp.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220825083256.14565-4-alice.guo@oss.nxp.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:45 +02:00
Jacky Bai 6371593fba watchdog: imx7ulp: Add explict memory barrier for unlock sequence
When reconfiguring the WDOG Timer of i.MX7ULP, there is a certain
probability causes it to reset. The reason is that the CMD32EN of the
WDOG Timer of i.MX7ULP is disabled in bootloader. The unlock sequence
are two 16-bit writes to the CNT register within 16 bus clocks. Adding
mb() is to guarantee that two 16-bit writes are finished within 16 bus
clocks. Memory barriers cannot be added between these two 16-bit writes
so that writel_relaxed is used.

Suggested-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Alice Guo <alice.guo@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220825083256.14565-3-alice.guo@oss.nxp.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:44 +02:00
Anson Huang f182683333 watchdog: imx7ulp: Move suspend/resume to noirq phase
The i.MX7ULP's watchdog is enabled by default when out of reset, so the
resume callback which is to disable watchdog should be called earlier
to avoid unexpected timeout, move suspend/resume callback to noirq phase.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Alice Guo <alice.guo@nxp.com>
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Tested-by: Peter Chen <peter.chen@nxp.com>
Tested-by: Li Jun <jun.li@nxp.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220825083256.14565-2-alice.guo@oss.nxp.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:44 +02:00
ye xingchen a1f136fd87 watchdog: rti-wdt:using the pm_runtime_resume_and_get to simplify the code
Using pm_runtime_resume_and_get() to instade of  pm_runtime_get_sync
and pm_runtime_put_noidle.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220802074643.1648660-1-ye.xingchen@zte.com.cn
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:43 +02:00
Johan Jonker 5946401e25 dt-bindings: watchdog: rockchip: add rockchip,rk3128-wdt
Add rockchip,rk3128-wdt compatible string.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/a4da79fe-3449-6538-742f-790835ffe43a@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:43 +02:00
Chanho Park 0c91aa185a watchdog: s3c2410_wdt: support exynosautov9 watchdog
Like exynos850, exynosautov9 SoC also has two cpu watchdogs.
Unfortunately, some configurations are slightly different so we need to
add samsung,exynosautov9-wdt and separate drv data for those watchdogs.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220520121750.71473-3-chanho61.park@samsung.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:42 +02:00
Chanho Park eadf8c4c73 dt-bindings: watchdog: add exynosautov9 compatible
Adds "samsung,exynosautov9-wdt" to samsung-wdt compatible. This has two
cpu watchdogs like exynos850.

Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220520121750.71473-2-chanho61.park@samsung.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:42 +02:00
Jonathan Neuschäfer af084fdccf watchdog: npcm: Enable clock if provided
On the Nuvoton WPCM450 SoC, with its upcoming clock driver, peripheral
clocks are individually gated and ungated. Therefore, the watchdog
driver must be able to ungate the watchdog clock.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220610072141.347795-3-j.neuschaefer@gmx.net
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:41 +02:00
Philippe Boos 6adbfbab0f watchdog: meson: keep running if already active
If the watchdog is already running (e.g.: started by bootloader) then
the kernel driver should keep the watchdog active but the amlogic driver
turns it off.

Let the driver fix the clock rate if already active because we do not
know the previous timebase value. To avoid unintentional resetting we
temporarily set it to its maximum value.

Then keep the enable bit if is was previously active.

Signed-off-by: Philippe Boos <pboos@baylibre.com>
Reviewed-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220801092150.4449-1-pboos@baylibre.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:41 +02:00
Sergiu Moga b24620608d watchdog: dt-bindings: atmel,at91sam9-wdt: convert to json-schema
Convert at91sam9 WDT binding for Atmel/Microchip SoCs to json-schema
format.

Signed-off-by: Sergiu Moga <sergiu.moga@microchip.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220714125122.144377-1-sergiu.moga@microchip.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:40 +02:00
Pali Rohár 8007935305 watchdog: armada_37xx_wdt: Fix .set_timeout callback
ioctl(WDIOC_SETTIMEOUT) calls .set_timeout and .ping callbacks and it is
expected that it changes current watchdog timeout.

armada_37xx_wdt's .ping callback just reping counter 0 and does not touch
counter 1 used for timeout. So it is needed to set counter 1 to the new
value in .set_timeout callback to ensure ioctl(WDIOC_SETTIMEOUT)
functionality. Fix it.

Fixes: 54e3d9b518 ("watchdog: Add support for Armada 37xx CPU watchdog")
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Marek Behún <kabel@kernel.org>
Link: https://lore.kernel.org/r/20220726085612.10672-1-pali@kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:40 +02:00
sunliming 74b31987e2 watchdog: sa1100: make variable sa1100dog_driver static
This symbol is not used outside of sa1100_wdt.c, so marks it static.

Fixes the following warning:

>> drivers/watchdog/sa1100_wdt.c:241:24: sparse: sparse: symbol 'sa1100dog_driver'
was not declared. Should it be static?

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: sunliming <sunliming@kylinos.cn>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220802020819.1226454-1-sunliming@kylinos.cn
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:39 +02:00
Jason Wang b26b96085d watchdog: w83977f_wdt: Fix comment typo
The double `we' is duplicated in the comment, remove one.

Signed-off-by: Jason Wang <wangborong@cdjrlc.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220802201109.6843-1-wangborong@cdjrlc.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:39 +02:00
shaomin Deng 08a884cf03 watchdog: eurotechwdt: Remove redundant word in comments
There is a rebundant word "we" in comments, so remove it.

Signed-off-by: shaomin Deng <dengshaomin@cdjrlc.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220808153956.8374-1-dengshaomin@cdjrlc.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:38 +02:00
Bo Liu 0e01297212 watchdog: Check dev_set_name() return value
It's possible that dev_set_name() returns -ENOMEM, catch and handle this.

Signed-off-by: Bo Liu <liubo03@inspur.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220920020312.2383-1-liubo03@inspur.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:38 +02:00
Phil Edworthy ec122fd94e watchdog: rzg2l_wdt: Add rzv2m support
The WDT on RZ/V2M devices is basically the same as RZ/G2L, but without
the parity error registers. This means the driver has to reset the
hardware plus set the minimum timeout in order to do a restart and has
a single interrupt.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220823093233.8577-3-phil.edworthy@renesas.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:37 +02:00
Phil Edworthy d59913b0a5 dt-bindings: watchdog: renesas,wdt: Add r9a09g011 (RZ/V2M) support
Add the documentation for the r9a09g011 SoC, but in doing so also
reorganise the doc to make it easier to read.
Additionally, make the binding require an interrupt to be specified.
Whilst the driver does not need an interrupt, all of the SoCs that use
this binding actually provide one.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220823093233.8577-2-phil.edworthy@renesas.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:37 +02:00
Dan Carpenter 695bfff553 watchdog: ftwdt010_wdt: fix test for platform_get_irq() failure
This code assumes that platform_get_irq() function returns zero on
failure.  In fact, platform_get_irq() never returns zero.  It returns
negative error codes or positive non-zero values on success.

Fixes: eca10ae600 ("watchdog: add driver for Cortina Gemini watchdog")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/YvTgRk/ABp62/hNA@kili
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:36 +02:00
Thanh Quan 22b455eecc dt-bindings: watchdog: renesas-wdt: Add r8a779g0 support
Document support for the Watchdog Timer (WDT) Controller in the Renesas
R-Car V4H (R8A779G0) SoC.

Signed-off-by: Thanh Quan <thanh.quan.xn@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/e3a246be066d5e9c2231285bc1488fc12866cf5d.1662714387.git.geert+renesas@glider.be
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:36 +02:00
David Müller 81126222bd watchdog: Exar/MaxLinear XR28V38x driver
Simple driver for the watchdog present in some Exar/MaxLinear UART chips.
Please see https://www.maxlinear.com/product/interface/uarts/lpc-uarts/xr28v384
for more info.

Signed-off-by: David Müller <d.mueller@elsoft.ch>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220914094605.93377-1-d.mueller@elsoft.ch
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:35 +02:00
Sergei Antonov 64ee937509 watchdog: ftwdt010_wdt: implement _restart() function
Implement ftwdt010_wdt_restart(). It enables watchdog with timeout = 0
and disabled IRQ. Since it needs code similar to ftwdt010_wdt_start(),
add a new function ftwdt010_enable() and move common code there.

Suggested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sergei Antonov <saproj@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220829090436.452742-1-saproj@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:35 +02:00
Henning Schild 5a9fbf8b80 watchdog: w83627hf_wdt: add bootstatus support
The status bit in the status and control register can tell us whether
the last reboot was caused by the watchdog. Make sure to take that into
the bootstatus before clearing it.

Signed-off-by: Henning Schild <henning.schild@siemens.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220824152448.7736-1-henning.schild@siemens.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:34 +02:00
Srinivas Neeli dc1f12b916 dt-bindings: watchdog: Convert Xilinx watchdog bindings to json-schema
Convert Xilinx watchdog bindings to DT schema format using json-schema

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220818150637.815-1-srinivas.neeli@xilinx.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:34 +02:00
Chin-Ting Kuo 19f04459f0 watchdog: aspeed_wdt: Reorder output signal register configuration
If the output driving type is push-pull mode, the output
polarity should be selected in advance. Otherwise, an unexpected
value will be output at the moment of changing to push-pull mode.
Thus, output polarity, WDT18[31], must be configured before
changing driving type, WDT18[30].

Signed-off-by: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Bonnie Lo <Bonnie_Lo@wiwynn.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20220819094905.1962513-1-chin-ting_kuo@aspeedtech.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:33 +02:00
Jerry Hoemann 891862d5ba watchdog/hpwdt: Enable HP_WATCHDOG for ARM64 systems.
Enable HP_WATCHDOG for ARM64 systems.
HPWDT_NMI_DECODING requires X86 as NMI handlers are X86 specific.

Signed-off-by: Jerry Hoemann <jerry.hoemann@hpe.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220820202821.1263837-3-jerry.hoemann@hpe.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:32 +02:00
Jerry Hoemann ed835d8171 watchdog/hpwdt: Include nmi.h only if CONFIG_HPWDT_NMI_DECODING
Fixes: d48b0e1737 ("x86, nmi, drivers: Fix nmi splitup build bug")

Arm64 does not support NMI and has no <asm/nmi.h>.

Include <asm/nmi.h> only if CONFIG_HPWDT_NMI_DECODING is defined to
avoid build failure on non-existent header file on Arm64.

Signed-off-by: Jerry Hoemann <jerry.hoemann@hpe.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220820202821.1263837-2-jerry.hoemann@hpe.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:32 +02:00
Jean Delvare 926e099267 watchdog: wdat_wdt: Set the min and max timeout values properly
The wdat_wdt driver is misusing the min_hw_heartbeat_ms field. This
field should only be used when the hardware watchdog device should not
be pinged more frequently than a specific period. The ACPI WDAT
"Minimum Count" field, on the other hand, specifies the minimum
timeout value that can be set. This corresponds to the min_timeout
field in Linux's watchdog infrastructure.

Setting min_hw_heartbeat_ms instead can cause pings to the hardware
to be delayed when there is no reason for that, eventually leading to
unexpected firing of the watchdog timer (and thus unexpected reboot).

Since commit 6d72c7ac9f ("watchdog: wdat_wdt: Using the existing
function to check parameter timeout"), min_timeout is being set too,
but to the arbitrary value of 1 second, which doesn't make sense and
allows setting timeout values lower that the ACPI WDAT "Minimum
Count" field.

I'm also changing max_hw_heartbeat_ms to max_timeout for symmetry,
although the use of this one isn't fundamentally wrong, but there is
also no reason to enable the software-driven ping mechanism for the
wdat_wdt driver.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Fixes: 058dfc7670 ("ACPI / watchdog: Add support for WDAT hardware watchdog")
Fixes: 6d72c7ac9f ("watchdog: wdat_wdt: Using the existing function to check parameter timeout")
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Cc: Wim Van Sebroeck <wim@linux-watchdog.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Liu Xinpeng <liuxp11@chinatelecom.cn>
Link: https://lore.kernel.org/r/20220823154713.023ee771@endymion.delvare
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:31 +02:00
Dmitry Torokhov 4f719022a7 watchdog: bd9576_wdt: switch to using devm_fwnode_gpiod_get()
I would like to stop exporting OF-specific devm_gpiod_get_from_of_node()
so that gpiolib can be cleaned a bit, so let's switch to the generic
fwnode property API.

While at it, switch the rest of the calls to read properties in
bd9576_wdt_probe() to the generic device property API as well.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20220903-gpiod_get_from_of_node-remove-v1-10-b29adfb27a6c@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:30 +02:00
Nobuhiro Iwamatsu 434e5f93ed dt-bindings: watchdog: toshiba,visconti-wdt: Update the common clock properties
The clock for this driver switched to the common clock controller driver.
Therefore, update common clock properties for watchdog in the binding document.
And this matched this example with the actual dts.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220525004605.2128727-1-nobuhiro1.iwamatsu@toshiba.co.jp
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02 12:55:30 +02:00
Masahiro Yamada aa221f2ea5 kallsyms: take the input file instead of reading stdin
This gets rid of the pipe operator connected with 'cat'.

Also use getopt_long() to parse the command line.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-10-02 18:06:05 +09:00
Masahiro Yamada a2833d1b07 kallsyms: drop duplicated ignore patterns from kallsyms.c
Now that kallsyms.c parses the output from mksysmap, some symbols have
already been dropped.

Move comments to scripts/mksysmap. Also, make the grep command readable.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-10-02 18:06:05 +09:00
Masahiro Yamada 94ff2f63d6 kbuild: reuse mksysmap output for kallsyms
scripts/mksysmap internally runs ${NM} (dropping some symbols).

When CONFIG_KALLSYMS=y, mksysmap creates .tmp_System.map, but it is
almost the same as the output from the ${NM} invocation in kallsyms().
It is true scripts/mksysmap drops some symbols, but scripts/kallsyms.c
ignores more anyway.

Keep the mksysmap output as *.syms, and reuse it for kallsyms and
'cmp -s'. It saves one ${NM} invocation.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-10-02 18:06:05 +09:00