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1,031,458 commits

Author SHA1 Message Date
Corentin Labbe
e4b016f4b4 alpha: __udiv_qrnnd should be exported
When building an alpha kernel with mpi set as module, I hit this build
error:
ERROR: "__udiv_qrnnd" [lib/mpi/mpi.ko] undefined!
make[2]: *** [scripts/Makefile.modpost:92: __modpost] Error 1
make[1]: *** [Makefile:1266: modules] Error 2

This is due to __udiv_qrnnd not exported.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
2021-07-25 20:55:40 -07:00
Randy Dunlap
9f66861181 m68k/coldfire: change pll var. to clk_pll
DEFINE_CLK() makes the variable name be clk_xyz, so variable
'pll' should instead be 'clk_pll'.

In file included from ../arch/m68k/coldfire/m525x.c:12:
../arch/m68k/coldfire/m525x.c:29:30: error: 'pll' undeclared here (not in a function)
   29 |  CLKDEV_INIT(NULL, "pll.0", &pll),
      |                              ^~~
../include/linux/clkdev.h:30:10: note: in definition of macro 'CLKDEV_INIT'
   30 |   .clk = c, \
      |          ^
In file included from ../arch/m68k/coldfire/m525x.c:21:
../arch/m68k/include/asm/mcfclk.h:43:27: warning: 'clk_pll' defined but not used [-Wunused-variable]
   43 |         static struct clk clk_##clk_ref = { \
      |                           ^~~~
../arch/m68k/coldfire/m525x.c:25:1: note: in expansion of macro 'DEFINE_CLK'
   25 | DEFINE_CLK(pll, "pll.0", MCF_CLK);
      | ^~~~~~~~~~

Fixes: 63aadb7766 ("m68k: coldfire: use clkdev_lookup on most coldfire")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: linux-m68k@lists.linux-m68k.org
Cc: uclinux-dev@uclinux.org
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
2021-07-26 08:41:38 +10:00
Linus Torvalds
ff1176468d Linux 5.14-rc3 v5.14-rc3 2021-07-25 15:35:14 -07:00
David S. Miller
832df96d5f Merge branch 'sctp-pmtu-probe'
Xin Long says:

====================
sctp: improve the pmtu probe in Search Complete state

Timo recently suggested to use the loss of (data) packets as
indication to send pmtu probe for Search Complete state, which
should also be implied by RFC8899. This patchset is to change
the current one that is doing probe with current pmtu all the
time.

v1->v2:
  - see Patch 2/2.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25 23:06:21 +01:00
Xin Long
eacf078cf4 sctp: send pmtu probe only if packet loss in Search Complete state
This patch is to introduce last_rtx_chunks into sctp_transport to detect
if there's any packet retransmission/loss happened by checking against
asoc's rtx_data_chunks in sctp_transport_pl_send().

If there is, namely, transport->last_rtx_chunks != asoc->rtx_data_chunks,
the pmtu probe will be sent out. Otherwise, increment the pl.raise_count
and return when it's in Search Complete state.

With this patch, if in Search Complete state, which is a long period, it
doesn't need to keep probing the current pmtu unless there's data packet
loss. This will save quite some traffic.

v1->v2:
  - add the missing Fixes tag.

Fixes: 0dac127c05 ("sctp: do black hole detection in search complete state")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25 23:06:02 +01:00
Xin Long
058e6e0ed0 sctp: improve the code for pmtu probe send and recv update
This patch does 3 things:

  - make sctp_transport_pl_send() and sctp_transport_pl_recv()
    return bool type to decide if more probe is needed to send.

  - pr_debug() only when probe is really needed to send.

  - count pl.raise_count in sctp_transport_pl_send() instead of
    sctp_transport_pl_recv(), and it's only incremented for the
    1st probe for the same size.

These are preparations for the next patch to make probes happen
only when there's packet loss in Search Complete state.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25 23:06:02 +01:00
Harshvardhan Jha
795e3d2ea6 net: qede: Fix end of loop tests for list_for_each_entry
The list_for_each_entry() iterator, "vlan" in this code, can never be
NULL so the warning will never be printed.

Signed-off-by: Harshvardhan Jha <harshvardhan.jha@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25 23:02:45 +01:00
Jagan Teki
44379b9864 drm/panel: panel-simple: Fix proper bpc for ytc700tlag_05_201c
ytc700tlag_05_201c panel support 8 bpc not 6 bpc as per
recent testing in i.MX8MM platform.

Fix it.

Fixes: 7a1f4fa4a6 ("drm/panel: simple: Add YTC700TLAG-05-201C")
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210725174737.891106-1-jagan@amarulasolutions.com
2021-07-25 22:12:14 +02:00
Linus Torvalds
a1833a5403 smpboot: fix duplicate and misplaced inlining directive
gcc doesn't care, but clang quite reasonably pointed out that the recent
commit e9ba16e68c ("smpboot: Mark idle_init() as __always_inlined to
work around aggressive compiler un-inlining") did some really odd
things:

    kernel/smpboot.c:50:20: warning: duplicate 'inline' declaration specifier [-Wduplicate-decl-specifier]
    static inline void __always_inline idle_init(unsigned int cpu)
                       ^

which not only has that duplicate inlining specifier, but the new
__always_inline was put in the wrong place of the function definition.

We put the storage class specifiers (ie things like "static" and
"extern") first, and the type information after that.  And while the
compiler may not care, we put the inline specifier before the types.

So it should be just

    static __always_inline void idle_init(unsigned int cpu)

instead.

Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-25 11:06:37 -07:00
Linus Torvalds
3c0ce1497a powerpc fixes for 5.14 #3
- Fix guest to host memory corruption in H_RTAS due to missing nargs check.
 
  - Fix guest triggerable host crashes due to bad handling of nested guest TM state.
 
  - Fix possible crashes due to incorrect reference counting in kvm_arch_vcpu_ioctl().
 
  - Two commits fixing some regressions in KVM transactional memory handling introduced by
    the recent rework of the KVM code.
 
 Thanks to: Nicholas Piggin, Alexey Kardashevskiy, Michael Neuling.
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Merge tag 'powerpc-5.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix guest to host memory corruption in H_RTAS due to missing nargs
   check.

 - Fix guest triggerable host crashes due to bad handling of nested
   guest TM state.

 - Fix possible crashes due to incorrect reference counting in
   kvm_arch_vcpu_ioctl().

 - Two commits fixing some regressions in KVM transactional memory
   handling introduced by the recent rework of the KVM code.

Thanks to Nicholas Piggin, Alexey Kardashevskiy, and Michael Neuling.

* tag 'powerpc-5.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  KVM: PPC: Book3S HV Nested: Sanitise H_ENTER_NESTED TM state
  KVM: PPC: Book3S: Fix H_RTAS rets buffer overflow
  KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak
  KVM: PPC: Book3S: Fix CONFIG_TRANSACTIONAL_MEM=n crash
  KVM: PPC: Book3S HV P9: Fix guest TM support
2021-07-25 10:33:48 -07:00
Linus Torvalds
12e9bd168c A samll set of timer related fixes:
- Plug a race between rearm and process tick in the posix CPU timers code
 
  - Make the optimization to avoid recalculation of the next timer interrupt
    work correctly when there are no timers pending.
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Merge tag 'timers-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer fixes from Thomas Gleixner:
 "A small set of timer related fixes:

   - Plug a race between rearm and process tick in the posix CPU timers
     code

   - Make the optimization to avoid recalculation of the next timer
     interrupt work correctly when there are no timers pending"

* tag 'timers-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timers: Fix get_next_timer_interrupt() with no timers pending
  posix-cpu-timers: Fix rearm racing against process tick
2021-07-25 10:27:44 -07:00
Linus Torvalds
d1b178254c A single fix for jump labels to prevent the compiler from agressive
un-inlining which results in a section mismatch.
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Merge tag 'locking-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 jump label fix from Thomas Gleixner:
 "A single fix for jump labels to prevent the compiler from agressive
  un-inlining which results in a section mismatch"

* tag 'locking-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  jump_labels: Mark __jump_label_transform() as __always_inlined to work around aggressive compiler un-inlining
2021-07-25 10:21:19 -07:00
Linus Torvalds
e049597e7e A set of EFI fixes:
- Prevent memblock and I/O reserved resources to get out of sync when EFI
     memreserve is in use.
 
   - Don't claim a non-existing table is invalid
 
   - Don't warn when firmware memory is already reserved correctly
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Merge tag 'efi-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull EFI fixes from Thomas Gleixner:
 "A set of EFI fixes:

   - Prevent memblock and I/O reserved resources to get out of sync when
     EFI memreserve is in use.

   - Don't claim a non-existing table is invalid

   - Don't warn when firmware memory is already reserved correctly"

* tag 'efi-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/mokvar: Reserve the table only if it is in boot services data
  efi/libstub: Fix the efi_load_initrd function description
  firmware/efi: Tell memblock about EFI iomem reservations
  efi/tpm: Differentiate missing and invalid final event log table.
2021-07-25 10:04:27 -07:00
Linus Torvalds
9041a4d2ee A single update for the boot code to prevent aggressive un-inlining which
causes a section mismatch.
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Merge tag 'core-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull core fix from Thomas Gleixner:
 "A single update for the boot code to prevent aggressive un-inlining
  which causes a section mismatch"

* tag 'core-urgent-2021-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  smpboot: Mark idle_init() as __always_inlined to work around aggressive compiler un-inlining
2021-07-25 09:52:48 -07:00
Linus Torvalds
04ca88d056 dma-mapping fix for Lonux 5.14
- handle vmalloc addresses in dma_common_{mmap,get_sgtable}
     (Roman Skakun)
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Merge tag 'dma-mapping-5.14-1' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping fix from Christoph Hellwig:

 - handle vmalloc addresses in dma_common_{mmap,get_sgtable} (Roman
   Skakun)

* tag 'dma-mapping-5.14-1' of git://git.infradead.org/users/hch/dma-mapping:
  dma-mapping: handle vmalloc addresses in dma_common_{mmap,get_sgtable}
2021-07-25 09:46:17 -07:00
Jiapeng Chong
7e4960b3d6 mlx4: Fix missing error code in mlx4_load_one()
The error code is missing in this code scenario, add the error code
'-EINVAL' to the return value 'err'.

Eliminate the follow smatch warning:

drivers/net/ethernet/mellanox/mlx4/main.c:3538 mlx4_load_one() warn:
missing error code 'err'.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Fixes: 7ae0e400cd ("net/mlx4_core: Flexible (asymmetric) allocation of EQs and MSI-X vectors for PF/VFs")
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25 10:47:24 +01:00
Kevin Lo
ad4e1e48a6 net: phy: broadcom: re-add check for PHY_BRCM_DIS_TXCRXC_NOENRGY on the BCM54811 PHY
Restore PHY_ID_BCM54811 accidently removed by commit 5d4358ede8.

Fixes: 5d4358ede8 ("net: phy: broadcom: Allow BCM54210E to configure APD")
Signed-off-by: Kevin Lo <kevlo@kevlo.org>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25 10:45:49 +01:00
Parav Pandit
149ea30fdd devlink: Fix phys_port_name of virtual port and merge error
Merge commit cited in fixes tag was incorrect. Due to it phys_port_name
of the virtual port resulted in incorrect name.

Also the phys_port_name of the physical port was written twice due to
the merge error.

Fix it by removing the old code and inserting back the misplaced code.

Related commits of interest in net and net-next branches that resulted
in merge conflict are:

in net-next branch:
commit f285f37cb1 ("devlink: append split port number to the port name")

in net branch:
commit b28d8f0c25 ("devlink: Correct VIRTUAL port to not have phys_port attributes")

Fixes: 126285651b ("Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net")
Signed-off-by: Parav Pandit <parav@nvidia.com>
Reported-by: Niklas Schnelle <schnelle@linux.ibm.com>
Tested-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25 10:44:54 +01:00
Hariprasad Kelam
4c85e57575 octeontx2-pf: Dont enable backpressure on LBK links
Avoid configure backpressure for LBK links as they
don't support it and enable lmacs before configuration
pause frames.

Fixes: 75f3627099 ("octeontx2-pf: Support to enable/disable pause frames via ethtool")
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25 09:25:03 +01:00
Geetha sowjanya
69f0aeb13b octeontx2-pf: Fix interface down flag on error
In the existing code while changing the number of TX/RX
queues using ethtool the PF/VF interface resources are
freed and reallocated (otx2_stop and otx2_open is called)
if the device is in running state. If any resource allocation
fails in otx2_open, driver free already allocated resources
and return. But again, when the number of queues changes
as the device state still running oxt2_stop is called.
In which we try to free already freed resources leading
to driver crash.
This patch fixes the issue by setting the INTF_DOWN flag on
error and free the resources in otx2_stop only if the flag is
not set.

Fixes: 50fe6c02e5 ("octeontx2-pf: Register and handle link notifications")
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <Sunil.Goutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25 09:25:03 +01:00
Geetha sowjanya
ac059d1644 octeontx2-af: Fix PKIND overlap between LBK and LMAC interfaces
Currently PKINDs are not assigned to LBK channels.
The default value of LBK_CHX_PKIND (channel to PKIND mapping) register
is zero, which is resulting in a overlap of pkind between LBK and CGX
LMACs. When KPU1 parser config is modified when PTP timestamping is
enabled on the CGX LMAC interface it is impacting traffic on LBK
interfaces as well.

This patch fixes the issue by reserving the PKIND#0 for LBK devices.
CGX mapped PF pkind starts from 1 and also fixes the max pkind available.

Fixes: 421572175b ("octeontx2-af: Support to enable/disable HW timestamping")
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-25 09:25:03 +01:00
Linus Torvalds
d8079fac16 5 cifs/smb3 fixes, including a DFS failover fix, 2 fallocate fixes, and 2 trivial coverity cleanups
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Merge tag '5.14-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Five cifs/smb3 fixes, including a DFS failover fix, two fallocate
  fixes, and two trivial coverity cleanups"

* tag '5.14-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: fix fallocate when trying to allocate a hole.
  CIFS: Clarify SMB1 code for POSIX delete file
  CIFS: Clarify SMB1 code for POSIX Create
  cifs: support share failover when remounting
  cifs: only write 64kb at a time when fallocating a small region of a file
2021-07-24 17:26:47 -07:00
Linus Torvalds
6498f61518 RISC-V Fixes for 5.13-rc3
* A fix to properly set the memory size, which fixes 32-bit systems.
 * A fix to allow the initrd to load anywhere in memory, rather that
   restricting it to the first 256MiB.
 * A fix for the mem= parameter on 64-bit systems, to properly account
   for the maximum supported memory now that the kernel is outside the
   linear map.
 * A fix to avoid installing mappings into the last 4KiB of memory, which
   conflicts with error values.
 * A fix to avoid the stack from being freed while it is being walked.
 * A handful of fixes to the new copy to/from user routines.
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Merge tag 'riscv-for-linus-5.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - properly set the memory size, which fixes 32-bit systems

 - allow initrd to load anywhere in memory, rather that restricting it
   to the first 256MiB

 - fix the 'mem=' parameter on 64-bit systems to properly account for
   the maximum supported memory now that the kernel is outside the
   linear map

 - avoid installing mappings into the last 4KiB of memory, which
   conflicts with error values

 - avoid the stack from being freed while it is being walked

 - a handful of fixes to the new copy to/from user routines

* tag 'riscv-for-linus-5.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: __asm_copy_to-from_user: Fix: Typos in comments
  riscv: __asm_copy_to-from_user: Remove unnecessary size check
  riscv: __asm_copy_to-from_user: Fix: fail on RV32
  riscv: __asm_copy_to-from_user: Fix: overrun copy
  riscv: stacktrace: pin the task's stack in get_wchan
  riscv: Make sure the kernel mapping does not overlap with IS_ERR_VALUE
  riscv: Make sure the linear mapping does not use the kernel mapping
  riscv: Fix memory_limit for 64-bit kernel
  RISC-V: load initrd wherever it fits into memory
  riscv: Fix 32-bit RISC-V boot failure
2021-07-24 15:34:04 -07:00
Linus Torvalds
fc68f42aa7 ACPI: fix NULL pointer dereference
Commit 71f6428332 ("ACPI: utils: Fix reference counting in
for_each_acpi_dev_match()") started doing "acpi_dev_put()" on a pointer
that was possibly NULL.  That fails miserably, because that helper
inline function is not set up to handle that case.

Just make acpi_dev_put() silently accept a NULL pointer, rather than
calling down to put_device() with an invalid offset off that NULL
pointer.

Link: https://lore.kernel.org/lkml/a607c149-6bf6-0fd0-0e31-100378504da2@kernel.dk/
Reported-and-tested-by: Jens Axboe <axboe@kernel.dk>
Tested-by: Daniel Scally <djrscally@gmail.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-24 15:25:54 -07:00
Linus Torvalds
7ffca2bb9d SCSI fixes on 20210724
Four fixes, all in drivers, all of which can lead to user visible
 problems in certain situations.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Four fixes, all in drivers, all of which can lead to user visible
  problems in certain situations"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: target: Fix NULL dereference on XCOPY completion
  scsi: mpt3sas: Transition IOC to Ready state during shutdown
  scsi: target: Fix protect handling in WRITE SAME(32)
  scsi: iscsi: Fix iface sysfs attr detection
2021-07-24 13:08:31 -07:00
Linus Torvalds
0ee818c393 io_uring-5.14-2021-07-24
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Merge tag 'io_uring-5.14-2021-07-24' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:

 - Fix a memory leak due to a race condition in io_init_wq_offload
   (Yang)

 - Poll error handling fixes (Pavel)

 - Fix early fdput() regression (me)

 - Don't reissue iopoll requests off release path (me)

 - Add a safety check for io-wq queue off wrong path (me)

* tag 'io_uring-5.14-2021-07-24' of git://git.kernel.dk/linux-block:
  io_uring: explicitly catch any illegal async queue attempt
  io_uring: never attempt iopoll reissue from release path
  io_uring: fix early fdput() of file
  io_uring: fix memleak in io_init_wq_offload()
  io_uring: remove double poll entry on arm failure
  io_uring: explicitly count entries for poll reqs
2021-07-24 13:03:40 -07:00
Jisheng Zhang
78d9d8005e
riscv: stacktrace: Fix NULL pointer dereference
When CONFIG_FRAME_POINTER=y, calling dump_stack() can always trigger
NULL pointer dereference panic similar as below:

[    0.396060] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.13.0-rc5+ #47
[    0.396692] Hardware name: riscv-virtio,qemu (DT)
[    0.397176] Call Trace:
[    0.398191] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000960
[    0.399487] Oops [#1]
[    0.399739] Modules linked in:
[    0.400135] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.13.0-rc5+ #47
[    0.400570] Hardware name: riscv-virtio,qemu (DT)
[    0.400926] epc : walk_stackframe+0xc4/0xdc
[    0.401291]  ra : dump_backtrace+0x30/0x38
[    0.401630] epc : ffffffff80004922 ra : ffffffff8000496a sp : ffffffe000f3bd00
[    0.402115]  gp : ffffffff80cfdcb8 tp : ffffffe000f30000 t0 : ffffffff80d0b0cf
[    0.402602]  t1 : ffffffff80d0b0c0 t2 : 0000000000000000 s0 : ffffffe000f3bd60
[    0.403071]  s1 : ffffffff808bc2e8 a0 : 0000000000001000 a1 : 0000000000000000
[    0.403448]  a2 : ffffffff803d7088 a3 : ffffffff808bc2e8 a4 : 6131725dbc24d400
[    0.403820]  a5 : 0000000000001000 a6 : 0000000000000002 a7 : ffffffffffffffff
[    0.404226]  s2 : 0000000000000000 s3 : 0000000000000000 s4 : 0000000000000000
[    0.404634]  s5 : ffffffff803d7088 s6 : ffffffff808bc2e8 s7 : ffffffff80630650
[    0.405085]  s8 : ffffffff80912a80 s9 : 0000000000000008 s10: ffffffff804000fc
[    0.405388]  s11: 0000000000000000 t3 : 0000000000000043 t4 : ffffffffffffffff
[    0.405616]  t5 : 000000000000003d t6 : ffffffe000f3baa8
[    0.405793] status: 0000000000000100 badaddr: 0000000000000960 cause: 000000000000000d
[    0.406135] [<ffffffff80004922>] walk_stackframe+0xc4/0xdc
[    0.407032] [<ffffffff8000496a>] dump_backtrace+0x30/0x38
[    0.407797] [<ffffffff803d7100>] show_stack+0x40/0x4c
[    0.408234] [<ffffffff803d9e5c>] dump_stack+0x90/0xb6
[    0.409019] [<ffffffff8040423e>] ptdump_init+0x20/0xc4
[    0.409681] [<ffffffff800015b6>] do_one_initcall+0x4c/0x226
[    0.410110] [<ffffffff80401094>] kernel_init_freeable+0x1f4/0x258
[    0.410562] [<ffffffff803dba88>] kernel_init+0x22/0x148
[    0.410959] [<ffffffff800029e2>] ret_from_exception+0x0/0x14
[    0.412241] ---[ end trace b2ab92c901b96251 ]---
[    0.413099] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

The reason is the task is NULL when we finally call walk_stackframe()
the NULL is passed from __dump_stack():

|static void __dump_stack(void)
|{
|        dump_stack_print_info(KERN_DEFAULT);
|        show_stack(NULL, NULL, KERN_DEFAULT);
|}

Fix this issue by checking "task == NULL" case in walk_stackframe().

Fixes: eac2f3059e ("riscv: stacktrace: fix the riscv stacktrace when CONFIG_FRAME_POINTER enabled")
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Tested-by: Wende Tan <twd2.me@gmail.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-07-24 12:58:51 -07:00
Linus Torvalds
4d4a60cede block-5.14-2021-07-24
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Merge tag 'block-5.14-2021-07-24' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - NVMe pull request (Christoph):
    - tracing fix (Keith Busch)
    - fix multipath head refcounting (Hannes Reinecke)
    - Write Zeroes vs PI fix (me)
    - drop a bogus WARN_ON (Zhihao Cheng)

 - Increase max blk-cgroup policy size, now that mq-deadline
   uses it too (Oleksandr)

* tag 'block-5.14-2021-07-24' of git://git.kernel.dk/linux-block:
  nvme: set the PRACT bit when using Write Zeroes with T10 PI
  nvme: fix nvme_setup_command metadata trace event
  nvme: fix refcounting imbalance when all paths are down
  nvme-pci: don't WARN_ON in nvme_reset_work if ctrl.state is not RESETTING
  block: increase BLKCG_MAX_POLS
2021-07-24 12:57:06 -07:00
Linus Torvalds
0823baef16 Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
 "Two bugfixes for the I2C subsystem"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: mpc: Poll for MCF
  misc: eeprom: at24: Always append device id even if label property is set.
2021-07-24 12:55:06 -07:00
Linus Torvalds
bca1d4de39 Merge branch 'akpm' (patches from Andrew)
Merge misc mm fixes from Andrew Morton:
 "15 patches.

  VM subsystems affected by this patch series: userfaultfd, kfence,
  highmem, pagealloc, memblock, pagecache, secretmem, pagemap, and
  hugetlbfs"

* akpm:
  hugetlbfs: fix mount mode command line processing
  mm: fix the deadlock in finish_fault()
  mm: mmap_lock: fix disabling preemption directly
  mm/secretmem: wire up ->set_page_dirty
  writeback, cgroup: do not reparent dax inodes
  writeback, cgroup: remove wb from offline list before releasing refcnt
  memblock: make for_each_mem_range() traverse MEMBLOCK_HOTPLUG regions
  mm: page_alloc: fix page_poison=1 / INIT_ON_ALLOC_DEFAULT_ON interaction
  mm: use kmap_local_page in memzero_page
  mm: call flush_dcache_page() in memcpy_to_page() and memzero_page()
  kfence: skip all GFP_ZONEMASK allocations
  kfence: move the size check to the beginning of __kfence_alloc()
  kfence: defer kfence_test_init to ensure that kunit debugfs is created
  selftest: use mmap instead of posix_memalign to allocate memory
  userfaultfd: do not untag user pointers
2021-07-24 12:27:16 -07:00
Michael Chan
89bc7f456c bnxt_en: Add missing periodic PHC overflow check
We use the timecounter APIs for the 48-bit PHC and packet timestamps.
We must periodically update the timecounter at roughly half the
overflow interval.  The overflow interval is about 78 hours, so
update it every 19 hours (1/4 interval) for some extra margins.

Fixes: 390862f45c ("bnxt_en: Get the full 48-bit hardware timestamp periodically")
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-24 19:47:58 +01:00
Xin Long
3cf4375a09 tipc: do not write skb_shinfo frags when doing decrytion
One skb's skb_shinfo frags are not writable, and they can be shared with
other skbs' like by pskb_copy(). To write the frags may cause other skb's
data crash.

So before doing en/decryption, skb_cow_data() should always be called for
a cloned or nonlinear skb if req dst is using the same sg as req src.
While at it, the likely branch can be removed, as it will be covered
by skb_cow_data().

Note that esp_input() has the same issue, and I will fix it in another
patch. tipc_aead_encrypt() doesn't have this issue, as it only processes
linear data in the unlikely branch.

Fixes: fc1b6d6de2 ("tipc: introduce TIPC encryption & authentication")
Reported-by: Shuang Li <shuali@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-24 19:38:21 +01:00
David S. Miller
e394f1e3b1 linux-can-fixes-for-5.14-20210724
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Merge tag 'linux-can-fixes-for-5.14-20210724' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can

linux-can-fixes-for-5.14-20210724

Marc Kleine-Budde says:

====================
pull-request: can 2021-07-24

this is a pull request of 6 patches for net/master.

The first patch is by Joakim Zhang targets the imx8mp device tree. It
removes the imx6 fallback from the flexcan binding, as the imx6 is not
compatible with the imx8mp.

Ziyang Xuan contributes a patch to fix a use-after-free in the CAN
raw's raw_setsockopt().

The next two patches target the CAN J1939 protocol. The first one is
by Oleksij Rempel and clarifies the lifetime of session object in
j1939_session_deactivate(). Zhang Changzhong's patch fixes the timeout
value between consecutive TP.DT.

Stephane Grosjean contributes a patch for the peak_usb driver to fix
reading of the rxerr/txerr values.

The last patch is by me for the mcp251xfd driver. It stops the
timestamp worker in case of a fatal error in the IRQ handler.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-24 19:33:23 +01:00
Chris Lesiak
84edec86f4 iio: humidity: hdc100x: Add margin to the conversion time
The datasheets have the following note for the conversion time
specification: "This parameter is specified by design and/or
characterization and it is not tested in production."

Parts have been seen that require more time to do 14-bit conversions for
the relative humidity channel.  The result is ENXIO due to the address
phase of a transfer not getting an ACK.

Delay an additional 1 ms per conversion to allow for additional margin.

Fixes: 4839367d99 ("iio: humidity: add HDC100x support")
Signed-off-by: Chris Lesiak <chris.lesiak@licor.com>
Acked-by: Matt Ranostay <matt.ranostay@konsulko.com>
Link: https://lore.kernel.org/r/20210614141820.2034827-1-chris.lesiak@licor.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-07-24 18:13:02 +01:00
Marc Kleine-Budde
ef68a71796 can: mcp251xfd: mcp251xfd_irq(): stop timestamping worker in case error in IRQ
In case an error occurred in the IRQ handler, the chip status is
dumped via devcoredump and all IRQs are disabled, but the chip stays
powered for further analysis.

The chip is in an undefined state and will not receive any CAN frames,
so shut down the timestamping worker, which reads the TBC register
regularly, too. This avoids any CRC read error messages if there is a
communication problem with the chip.

Fixes: efd8d98dfb ("can: mcp251xfd: add HW timestamp infrastructure")
Link: https://lore.kernel.org/r/20210724155131.471303-1-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-07-24 19:02:32 +02:00
Stephane Grosjean
590eb2b7d8 can: peak_usb: pcan_usb_handle_bus_evt(): fix reading rxerr/txerr values
This patch fixes an incorrect way of reading error counters in messages
received for this purpose from the PCAN-USB interface. These messages
inform about the increase or decrease of the error counters, whose values
are placed in bytes 1 and 2 of the message data (not 0 and 1).

Fixes: ea8b33bde7 ("can: pcan_usb: add support of rxerr/txerr counters")
Link: https://lore.kernel.org/r/20210625130931.27438-4-s.grosjean@peak-system.com
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-07-24 19:02:32 +02:00
Zhang Changzhong
c6eea1c8bd can: j1939: j1939_xtp_rx_dat_one(): fix rxtimer value between consecutive TP.DT to 750ms
For receive side, the max time interval between two consecutive TP.DT
should be 750ms.

Fixes: 9d71dd0c70 ("can: add support of SAE J1939 protocol")
Link: https://lore.kernel.org/r/1625569210-47506-1-git-send-email-zhangchangzhong@huawei.com
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-07-24 19:02:24 +02:00
Oleksij Rempel
0c71437dd5 can: j1939: j1939_session_deactivate(): clarify lifetime of session object
The j1939_session_deactivate() is decrementing the session ref-count and
potentially can free() the session. This would cause use-after-free
situation.

However, the code calling j1939_session_deactivate() does always hold
another reference to the session, so that it would not be free()ed in
this code path.

This patch adds a comment to make this clear and a WARN_ON, to ensure
that future changes will not violate this requirement. Further this
patch avoids dereferencing the session pointer as a precaution to avoid
use-after-free if the session is actually free()ed.

Fixes: 9d71dd0c70 ("can: add support of SAE J1939 protocol")
Link: https://lore.kernel.org/r/20210714111602.24021-1-o.rempel@pengutronix.de
Reported-by: Xiaochen Zou <xzou017@ucr.edu>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-07-24 19:01:53 +02:00
Ziyang Xuan
54f93336d0 can: raw: raw_setsockopt(): fix raw_rcv panic for sock UAF
We get a bug during ltp can_filter test as following.

===========================================
[60919.264984] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
[60919.265223] PGD 8000003dda726067 P4D 8000003dda726067 PUD 3dda727067 PMD 0
[60919.265443] Oops: 0000 [#1] SMP PTI
[60919.265550] CPU: 30 PID: 3638365 Comm: can_filter Kdump: loaded Tainted: G        W         4.19.90+ #1
[60919.266068] RIP: 0010:selinux_socket_sock_rcv_skb+0x3e/0x200
[60919.293289] RSP: 0018:ffff8d53bfc03cf8 EFLAGS: 00010246
[60919.307140] RAX: 0000000000000000 RBX: 000000000000001d RCX: 0000000000000007
[60919.320756] RDX: 0000000000000001 RSI: ffff8d5104a8ed00 RDI: ffff8d53bfc03d30
[60919.334319] RBP: ffff8d9338056800 R08: ffff8d53bfc29d80 R09: 0000000000000001
[60919.347969] R10: ffff8d53bfc03ec0 R11: ffffb8526ef47c98 R12: ffff8d53bfc03d30
[60919.350320] perf: interrupt took too long (3063 > 2500), lowering kernel.perf_event_max_sample_rate to 65000
[60919.361148] R13: 0000000000000001 R14: ffff8d53bcf90000 R15: 0000000000000000
[60919.361151] FS:  00007fb78b6b3600(0000) GS:ffff8d53bfc00000(0000) knlGS:0000000000000000
[60919.400812] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[60919.413730] CR2: 0000000000000010 CR3: 0000003e3f784006 CR4: 00000000007606e0
[60919.426479] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[60919.439339] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[60919.451608] PKRU: 55555554
[60919.463622] Call Trace:
[60919.475617]  <IRQ>
[60919.487122]  ? update_load_avg+0x89/0x5d0
[60919.498478]  ? update_load_avg+0x89/0x5d0
[60919.509822]  ? account_entity_enqueue+0xc5/0xf0
[60919.520709]  security_sock_rcv_skb+0x2a/0x40
[60919.531413]  sk_filter_trim_cap+0x47/0x1b0
[60919.542178]  ? kmem_cache_alloc+0x38/0x1b0
[60919.552444]  sock_queue_rcv_skb+0x17/0x30
[60919.562477]  raw_rcv+0x110/0x190 [can_raw]
[60919.572539]  can_rcv_filter+0xbc/0x1b0 [can]
[60919.582173]  can_receive+0x6b/0xb0 [can]
[60919.591595]  can_rcv+0x31/0x70 [can]
[60919.600783]  __netif_receive_skb_one_core+0x5a/0x80
[60919.609864]  process_backlog+0x9b/0x150
[60919.618691]  net_rx_action+0x156/0x400
[60919.627310]  ? sched_clock_cpu+0xc/0xa0
[60919.635714]  __do_softirq+0xe8/0x2e9
[60919.644161]  do_softirq_own_stack+0x2a/0x40
[60919.652154]  </IRQ>
[60919.659899]  do_softirq.part.17+0x4f/0x60
[60919.667475]  __local_bh_enable_ip+0x60/0x70
[60919.675089]  __dev_queue_xmit+0x539/0x920
[60919.682267]  ? finish_wait+0x80/0x80
[60919.689218]  ? finish_wait+0x80/0x80
[60919.695886]  ? sock_alloc_send_pskb+0x211/0x230
[60919.702395]  ? can_send+0xe5/0x1f0 [can]
[60919.708882]  can_send+0xe5/0x1f0 [can]
[60919.715037]  raw_sendmsg+0x16d/0x268 [can_raw]

It's because raw_setsockopt() concurrently with
unregister_netdevice_many(). Concurrent scenario as following.

	cpu0						cpu1
raw_bind
raw_setsockopt					unregister_netdevice_many
						unlist_netdevice
dev_get_by_index				raw_notifier
raw_enable_filters				......
can_rx_register
can_rcv_list_find(..., net->can.rx_alldev_list)

......

sock_close
raw_release(sock_a)

......

can_receive
can_rcv_filter(net->can.rx_alldev_list, ...)
raw_rcv(skb, sock_a)
BUG

After unlist_netdevice(), dev_get_by_index() return NULL in
raw_setsockopt(). Function raw_enable_filters() will add sock
and can_filter to net->can.rx_alldev_list. Then the sock is closed.
Followed by, we sock_sendmsg() to a new vcan device use the same
can_filter. Protocol stack match the old receiver whose sock has
been released on net->can.rx_alldev_list in can_rcv_filter().
Function raw_rcv() uses the freed sock. UAF BUG is triggered.

We can find that the key issue is that net_device has not been
protected in raw_setsockopt(). Use rtnl_lock to protect net_device
in raw_setsockopt().

Fixes: c18ce101f2 ("[CAN]: Add raw protocol")
Link: https://lore.kernel.org/r/20210722070819.1048263-1-william.xuanziyang@huawei.com
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-07-24 19:00:14 +02:00
Joakim Zhang
f5d156c7bf arm64: dts: imx8mp: remove fallback compatible string for FlexCAN
FlexCAN on i.MX8MP is not derived from i.MX6Q, instead reuses from
i.MX8QM with extra ECC added and default is enabled, so that the FlexCAN
would be put into freeze mode without FLEXCAN_QUIRK_DISABLE_MECR quirk.

This patch removes "fsl,imx6q-flexcan" fallback compatible string since
it's not compatible with the i.MX6Q.

Link: https://lore.kernel.org/r/20210719073437.32078-1-qiangqing.zhang@nxp.com
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-07-24 17:50:15 +02:00
Maxime Ripard
14a30238ec dt-bindings: iio: st: Remove wrong items length check
The original bindings was listing the length of the interrupts as either
1 or 2, depending on the setup. This is also what is enforced by the top
level schema.

However, that is further constrained with an if clause that require
exactly two interrupts, even though it might not make sense on those
devices or in some setups.

Let's remove the clause entirely.

Cc: Denis Ciocca <denis.ciocca@st.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Fixes: 0cd7114580 ("iio: st-sensors: Update ST Sensor bindings")
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210721140424.725744-16-maxime@cerno.tech
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-07-24 16:19:00 +01:00
Arnd Bergmann
9f9decdb64 iio: accel: fxls8962af: fix i2c dependency
With CONFIG_SPI=y and CONFIG_I2C=m, building fxls8962af into vmlinux
causes a link error against the I2C module:

aarch64-linux-ld: drivers/iio/accel/fxls8962af-core.o: in function `fxls8962af_fifo_flush':
fxls8962af-core.c:(.text+0x3a0): undefined reference to `i2c_verify_client'

Work around it by adding a Kconfig dependency that forces the SPI driver
to be a loadable module whenever I2C is a module.

Fixes: af959b7b96 ("iio: accel: fxls8962af: fix errata bug E3 - I2C burst reads")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210721151330.2176653-1-arnd@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2021-07-24 16:13:11 +01:00
chihhao.chen
4511781f95 ALSA: usb-audio: fix incorrect clock source setting
The following scenario describes an echo test for
Samsung USBC Headset (AKG) with VID/PID (0x04e8/0xa051).

We first start a capture stream(USB IN transfer) in 96Khz/24bit/1ch mode.
In clock find source function, we get value 0x2 for clock selector
and 0x1 for clock source.

Kernel-4.14 behavior
Since clock source is valid so clock selector was not set again.
We pass through this function and start a playback stream(USB OUT transfer)
in 48Khz/32bit/2ch mode. This time we get value 0x1 for clock selector
and 0x1 for clock source. Finally clock id with this setting is 0x9.

Kernel-5.10 behavior
Clock selector was always set one more time even it is valid.
When we start a playback stream, we will get 0x2 for clock selector
and 0x1 for clock source. In this case clock id becomes 0xA.
This is an incorrect clock source setting and results in severe noises.
We see wrong data rate in USB IN transfer.
(From 288 bytes/ms becomes 144 bytes/ms) It should keep in 288 bytes/ms.

This earphone works fine on older kernel version load because
this is a newly-added behavior.

Fixes: d2e8f64125 ("ALSA: usb-audio: Explicitly set up the clock selector")
Signed-off-by: chihhao.chen <chihhao.chen@mediatek.com>
Link: https://lore.kernel.org/r/1627100621-19225-1-git-send-email-chihhao.chen@mediatek.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-07-24 10:06:52 +02:00
Geoffrey D. Bennett
2b8b12be9b ALSA: scarlett2: Fix line out/speaker switching notifications
The values of the line output controls can change when the SW/HW
switches are set to HW, and also when speaker switching is enabled.
These notifications were sent with a mask of only
SNDRV_CTL_EVENT_MASK_INFO. Change the notifications to set the
SNDRV_CTL_EVENT_MASK_VALUE mask bit as well.

When the mute control is updated, the notification was sent with a
mask of SNDRV_CTL_EVENT_MASK_INFO. Change the mask to the correct
value of SNDRV_CTL_EVENT_MASK_VALUE.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/8192e15ba62fa4bc90425c005f265c0de530be20.1626959758.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-07-24 10:05:30 +02:00
Geoffrey D. Bennett
9ee0fc8366 ALSA: scarlett2: Correct channel mute status after mute button pressed
After the hardware mute button is pressed, private->vol_updated is set
so that the mute status is invalidated. As the channel mute values may
be affected by the global mute value, update scarlett2_mute_ctl_get()
to call scarlett2_update_volumes() if private->vol_updated is set.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/aa18ddbf8d8bd7f31832ab1b6b6057c00b931202.1626959758.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-07-24 10:05:06 +02:00
Geoffrey D. Bennett
d3a4f784d2 ALSA: scarlett2: Fix Direct Monitor control name for 2i2
The Direct Monitor control for the 2i2 is an enumerated value, not a
boolean. Fix the control name to say "Playback Enum" instead of
"Playback Switch" in this case.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/faf5de1d2100038e7d07520d770fda4a1adc276a.1626959758.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-07-24 10:04:55 +02:00
Geoffrey D. Bennett
cdf72837cd ALSA: scarlett2: Fix Mute/Dim/MSD Mode control names
Append "Playback Switch" to the names of "Mute" and "Dim" controls,
and append "Switch" to the "MSD Mode" control as per
Documentation/sound/designs/control-names.rst.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/77f1000652c37e3217fb8dad8e156bc6392abc0b.1626959758.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-07-24 10:04:30 +02:00
Akira Tsukamoto
ea196c548c
riscv: __asm_copy_to-from_user: Fix: Typos in comments
Fixing typos and grammar mistakes and using more intuitive label
name.

Signed-off-by: Akira Tsukamoto <akira.tsukamoto@gmail.com>
Fixes: ca6eaaa210 ("riscv: __asm_copy_to-from_user: Optimize unaligned memory access and pipeline stall")
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-07-23 17:49:12 -07:00
Akira Tsukamoto
d4b3e0105e
riscv: __asm_copy_to-from_user: Remove unnecessary size check
Clean up:

The size of 0 will be evaluated in the next step. Not
required here.

Signed-off-by: Akira Tsukamoto <akira.tsukamoto@gmail.com>
Fixes: ca6eaaa210 ("riscv: __asm_copy_to-from_user: Optimize unaligned memory access and pipeline stall")
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-07-23 17:49:07 -07:00
Akira Tsukamoto
22b5f16ffe
riscv: __asm_copy_to-from_user: Fix: fail on RV32
Had a bug when converting bytes to bits when the cpu was rv32.

The a3 contains the number of bytes and multiple of 8
would be the bits. The LGREG is holding 2 for RV32 and 3 for
RV32, so to achieve multiple of 8 it must always be constant 3.
The 2 was mistakenly used for rv32.

Signed-off-by: Akira Tsukamoto <akira.tsukamoto@gmail.com>
Fixes: ca6eaaa210 ("riscv: __asm_copy_to-from_user: Optimize unaligned memory access and pipeline stall")
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-07-23 17:49:01 -07:00