linux-toradex.git/drivers/misc/cxl, branch v5.12

Merge tag 'char-misc-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2021-02-24T18:25:37+00:00

Pull char/misc driver updates from Greg KH:
 "Here is the large set of char/misc/whatever driver subsystem updates
  for 5.12-rc1. Over time it seems like this tree is collecting more and
  more tiny driver subsystems in one place, making it easier for those
  maintainers, which is why this is getting larger.

  Included in here are:

   - coresight driver updates

   - habannalabs driver updates

   - virtual acrn driver addition (proper acks from the x86 maintainers)

   - broadcom misc driver addition

   - speakup driver updates

   - soundwire driver updates

   - fpga driver updates

   - amba driver updates

   - mei driver updates

   - vfio driver updates

   - greybus driver updates

   - nvmeem driver updates

   - phy driver updates

   - mhi driver updates

   - interconnect driver udpates

   - fsl-mc bus driver updates

   - random driver fix

   - some small misc driver updates (rtsx, pvpanic, etc.)

  All of these have been in linux-next for a while, with the only
  reported issue being a merge conflict due to the dfl_device_id
  addition from the fpga subsystem in here"

* tag 'char-misc-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (311 commits)
  spmi: spmi-pmic-arb: Fix hw_irq overflow
  Documentation: coresight: Add PID tracing description
  coresight: etm-perf: Support PID tracing for kernel at EL2
  coresight: etm-perf: Clarify comment on perf options
  ACRN: update MAINTAINERS: mailing list is subscribers-only
  regmap: sdw-mbq: use MODULE_LICENSE("GPL")
  regmap: sdw: use no_pm routines for SoundWire 1.2 MBQ
  regmap: sdw: use _no_pm functions in regmap_read/write
  soundwire: intel: fix possible crash when no device is detected
  MAINTAINERS: replace my with email with replacements
  mhi: Fix double dma free
  uapi: map_to_7segment: Update example in documentation
  uio: uio_pci_generic: don't fail probe if pdev->irq equals to IRQ_NOTCONNECTED
  drivers/misc/vmw_vmci: restrict too big queue size in qp_host_alloc_queue
  firewire: replace tricky statement by two simple ones
  vme: make remove callback return void
  firmware: google: make coreboot driver's remove callback return void
  firmware: xilinx: Use explicit values for all enum values
  sample/acrn: Introduce a sample of HSM ioctl interface usage
  virt: acrn: Introduce an interface for Service VM to control vCPU
  ...

cxl: Simplify bool conversion

2021-02-04T16:02:18+00:00

Fix the following coccicheck warning:
./drivers/misc/cxl/sysfs.c:181:48-53: WARNING: conversion to bool not
needed here

Reported-by: Abaci Robot 
Reviewed-by: Andrew Donnellan 
Acked-by: Frederic Barrat 
Signed-off-by: Yang Li 
Link: https://lore.kernel.org/r/1611908705-98507-1-git-send-email-yang.lee@linux.alibaba.com
Signed-off-by: Greg Kroah-Hartman

cxl: Reduce scope for the variable “mm” in cxllib_get_PE_attributes()

2021-01-31T11:35:50+00:00

A local variable was used only within an if branch.
Thus move the definition for the variable “mm” into the corresponding
code block.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/5cee2b25-71e0-15aa-fba6-12211b8308aa@web.de

cxl: Rework error message for incompatible slots

2020-08-24T15:31:32+00:00

Improve the error message shown if a capi adapter is plugged on a
capi-incompatible slot directly under the PHB (no intermediate switch).

Fixes: 5632874311db ("cxl: Add support for POWER9 DD2")
Cc: stable@vger.kernel.org # 4.14+
Signed-off-by: Frederic Barrat 
Reviewed-by: Andrew Donnellan 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/20200407115601.25453-1-fbarrat@linux.ibm.com

cxl: Change PCIBIOS_SUCCESSFUL to 0

2020-07-13T13:39:52+00:00

In reference to the PCI spec (Chapter 2), PCIBIOS* is an x86 concept.
There scope should be limited within arch/x86.

Change all PCIBIOS_SUCCESSFUL to 0

Signed-off-by: "Saheed O. Bolarinwa" 
Link: https://lore.kernel.org/r/20200713122247.10985-14-refactormyself@gmail.com
Signed-off-by: Greg Kroah-Hartman

misc: cxl: flash: Remove unused variable 'drc_index'

2020-07-10T12:55:24+00:00

Keeping the pointer increment though.

Fixes the following W=1 kernel build warning:

 drivers/misc/cxl/flash.c: In function ‘update_devicetree’:
 drivers/misc/cxl/flash.c:178:16: warning: variable ‘drc_index’ set but not used [-Wunused-but-set-variable]
 178 | __be32 *data, drc_index, phandle;
 | ^~~~~~~~~

Cc: Frederic Barrat 
Cc: Andrew Donnellan 
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Lee Jones 
Acked-by: Andrew Donnellan 
Acked-by: Arnd Bergmann 
Link: https://lore.kernel.org/r/20200709065651.GY3500@dell
Signed-off-by: Greg Kroah-Hartman

misc: cxl: hcalls: Demote half-assed kerneldoc attempt

2020-07-01T13:08:05+00:00

Function headers will need a lot of work before they reach the
standards expected of kerneldoc.  Demote them down to basic
comments/headers, for now at least.

Fixes the following W=1 kernel build warnings:

 drivers/misc/cxl/hcalls.c:175: warning: Function parameter or member 'unit_address' not described in 'cxl_h_detach_process'
 drivers/misc/cxl/hcalls.c:175: warning: Function parameter or member 'process_token' not described in 'cxl_h_detach_process'
 drivers/misc/cxl/hcalls.c:207: warning: Function parameter or member 'unit_address' not described in 'cxl_h_control_function'
 drivers/misc/cxl/hcalls.c:207: warning: Function parameter or member 'op' not described in 'cxl_h_control_function'
 drivers/misc/cxl/hcalls.c:207: warning: Function parameter or member 'p1' not described in 'cxl_h_control_function'
 drivers/misc/cxl/hcalls.c:207: warning: Function parameter or member 'p2' not described in 'cxl_h_control_function'
 drivers/misc/cxl/hcalls.c:207: warning: Function parameter or member 'p3' not described in 'cxl_h_control_function'
 drivers/misc/cxl/hcalls.c:207: warning: Function parameter or member 'p4' not described in 'cxl_h_control_function'
 drivers/misc/cxl/hcalls.c:207: warning: Function parameter or member 'out' not described in 'cxl_h_control_function'
 drivers/misc/cxl/hcalls.c:245: warning: Function parameter or member 'unit_address' not described in 'cxl_h_reset_afu'
 drivers/misc/cxl/hcalls.c:258: warning: Function parameter or member 'unit_address' not described in 'cxl_h_suspend_process'
 drivers/misc/cxl/hcalls.c:258: warning: Function parameter or member 'process_token' not described in 'cxl_h_suspend_process'
 drivers/misc/cxl/hcalls.c:271: warning: Function parameter or member 'unit_address' not described in 'cxl_h_resume_process'
 drivers/misc/cxl/hcalls.c:271: warning: Function parameter or member 'process_token' not described in 'cxl_h_resume_process'
 drivers/misc/cxl/hcalls.c:284: warning: Function parameter or member 'unit_address' not described in 'cxl_h_read_error_state'
 drivers/misc/cxl/hcalls.c:284: warning: Function parameter or member 'state' not described in 'cxl_h_read_error_state'
 drivers/misc/cxl/hcalls.c:300: warning: Function parameter or member 'unit_address' not described in 'cxl_h_get_afu_err'
 drivers/misc/cxl/hcalls.c:300: warning: Function parameter or member 'offset' not described in 'cxl_h_get_afu_err'
 drivers/misc/cxl/hcalls.c:300: warning: Function parameter or member 'buf_address' not described in 'cxl_h_get_afu_err'
 drivers/misc/cxl/hcalls.c:300: warning: Function parameter or member 'len' not described in 'cxl_h_get_afu_err'
 drivers/misc/cxl/hcalls.c:320: warning: Function parameter or member 'unit_address' not described in 'cxl_h_get_config'
 drivers/misc/cxl/hcalls.c:320: warning: Function parameter or member 'cr_num' not described in 'cxl_h_get_config'
 drivers/misc/cxl/hcalls.c:320: warning: Function parameter or member 'offset' not described in 'cxl_h_get_config'
 drivers/misc/cxl/hcalls.c:320: warning: Function parameter or member 'buf_address' not described in 'cxl_h_get_config'
 drivers/misc/cxl/hcalls.c:320: warning: Function parameter or member 'len' not described in 'cxl_h_get_config'
 drivers/misc/cxl/hcalls.c:333: warning: Function parameter or member 'unit_address' not described in 'cxl_h_terminate_process'
 drivers/misc/cxl/hcalls.c:333: warning: Function parameter or member 'process_token' not described in 'cxl_h_terminate_process'
 drivers/misc/cxl/hcalls.c:351: warning: Function parameter or member 'unit_address' not described in 'cxl_h_collect_vpd'
 drivers/misc/cxl/hcalls.c:351: warning: Function parameter or member 'record' not described in 'cxl_h_collect_vpd'
 drivers/misc/cxl/hcalls.c:351: warning: Function parameter or member 'list_address' not described in 'cxl_h_collect_vpd'
 drivers/misc/cxl/hcalls.c:351: warning: Function parameter or member 'num' not described in 'cxl_h_collect_vpd'
 drivers/misc/cxl/hcalls.c:351: warning: Function parameter or member 'out' not described in 'cxl_h_collect_vpd'
 drivers/misc/cxl/hcalls.c:362: warning: Function parameter or member 'unit_address' not described in 'cxl_h_get_fn_error_interrupt'
 drivers/misc/cxl/hcalls.c:362: warning: Function parameter or member 'reg' not described in 'cxl_h_get_fn_error_interrupt'
 drivers/misc/cxl/hcalls.c:374: warning: Function parameter or member 'unit_address' not described in 'cxl_h_ack_fn_error_interrupt'
 drivers/misc/cxl/hcalls.c:374: warning: Function parameter or member 'value' not described in 'cxl_h_ack_fn_error_interrupt'
 drivers/misc/cxl/hcalls.c:386: warning: Function parameter or member 'unit_address' not described in 'cxl_h_get_error_log'
 drivers/misc/cxl/hcalls.c:386: warning: Function parameter or member 'value' not described in 'cxl_h_get_error_log'
 drivers/misc/cxl/hcalls.c:399: warning: Function parameter or member 'unit_address' not described in 'cxl_h_collect_int_info'
 drivers/misc/cxl/hcalls.c:399: warning: Function parameter or member 'process_token' not described in 'cxl_h_collect_int_info'
 drivers/misc/cxl/hcalls.c:399: warning: Function parameter or member 'info' not described in 'cxl_h_collect_int_info'
 drivers/misc/cxl/hcalls.c:440: warning: Function parameter or member 'unit_address' not described in 'cxl_h_control_faults'
 drivers/misc/cxl/hcalls.c:440: warning: Function parameter or member 'process_token' not described in 'cxl_h_control_faults'
 drivers/misc/cxl/hcalls.c:440: warning: Function parameter or member 'control_mask' not described in 'cxl_h_control_faults'
 drivers/misc/cxl/hcalls.c:440: warning: Function parameter or member 'reset_mask' not described in 'cxl_h_control_faults'
 drivers/misc/cxl/hcalls.c:480: warning: Function parameter or member 'unit_address' not described in 'cxl_h_control_facility'
 drivers/misc/cxl/hcalls.c:480: warning: Function parameter or member 'op' not described in 'cxl_h_control_facility'
 drivers/misc/cxl/hcalls.c:480: warning: Function parameter or member 'p1' not described in 'cxl_h_control_facility'
 drivers/misc/cxl/hcalls.c:480: warning: Function parameter or member 'p2' not described in 'cxl_h_control_facility'
 drivers/misc/cxl/hcalls.c:480: warning: Function parameter or member 'p3' not described in 'cxl_h_control_facility'
 drivers/misc/cxl/hcalls.c:480: warning: Function parameter or member 'p4' not described in 'cxl_h_control_facility'
 drivers/misc/cxl/hcalls.c:480: warning: Function parameter or member 'out' not described in 'cxl_h_control_facility'
 drivers/misc/cxl/hcalls.c:516: warning: Function parameter or member 'unit_address' not described in 'cxl_h_reset_adapter'
 drivers/misc/cxl/hcalls.c:532: warning: Function parameter or member 'unit_address' not described in 'cxl_h_collect_vpd_adapter'
 drivers/misc/cxl/hcalls.c:532: warning: Function parameter or member 'list_address' not described in 'cxl_h_collect_vpd_adapter'
 drivers/misc/cxl/hcalls.c:532: warning: Function parameter or member 'num' not described in 'cxl_h_collect_vpd_adapter'
 drivers/misc/cxl/hcalls.c:532: warning: Function parameter or member 'out' not described in 'cxl_h_collect_vpd_adapter'
 drivers/misc/cxl/hcalls.c:561: warning: Function parameter or member 'unit_address' not described in 'cxl_h_download_facility'
 drivers/misc/cxl/hcalls.c:561: warning: Function parameter or member 'op' not described in 'cxl_h_download_facility'
 drivers/misc/cxl/hcalls.c:561: warning: Function parameter or member 'list_address' not described in 'cxl_h_download_facility'
 drivers/misc/cxl/hcalls.c:561: warning: Function parameter or member 'num' not described in 'cxl_h_download_facility'
 drivers/misc/cxl/hcalls.c:561: warning: Function parameter or member 'out' not described in 'cxl_h_download_facility'
 drivers/misc/cxl/hcalls.c:626: warning: Function parameter or member 'unit_address' not described in 'cxl_h_download_adapter_image'
 drivers/misc/cxl/hcalls.c:626: warning: Function parameter or member 'list_address' not described in 'cxl_h_download_adapter_image'
 drivers/misc/cxl/hcalls.c:626: warning: Function parameter or member 'num' not described in 'cxl_h_download_adapter_image'
 drivers/misc/cxl/hcalls.c:626: warning: Function parameter or member 'out' not described in 'cxl_h_download_adapter_image'
 drivers/misc/cxl/hcalls.c:639: warning: Function parameter or member 'unit_address' not described in 'cxl_h_validate_adapter_image'
 drivers/misc/cxl/hcalls.c:639: warning: Function parameter or member 'list_address' not described in 'cxl_h_validate_adapter_image'
 drivers/misc/cxl/hcalls.c:639: warning: Function parameter or member 'num' not described in 'cxl_h_validate_adapter_image'

Cc: Frederic Barrat 
Cc: Andrew Donnellan 
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Lee Jones 
Link: https://lore.kernel.org/r/20200701083118.45744-28-lee.jones@linaro.org
Signed-off-by: Greg Kroah-Hartman

cxl: Fix kobject memleak

2020-06-29T16:12:53+00:00

Currently the error return path from kobject_init_and_add() is not
followed by a call to kobject_put() - which means we are leaking
the kobject.

Fix it by adding a call to kobject_put() in the error path of
kobject_init_and_add().

Fixes: b087e6190ddc ("cxl: Export optional AFU configuration record in sysfs")
Reported-by: Hulk Robot 
Signed-off-by: Wang Hai 
Acked-by: Andrew Donnellan 
Acked-by: Frederic Barrat 
Link: https://lore.kernel.org/r/20200602120733.5943-1-wanghai38@huawei.com
Signed-off-by: Greg Kroah-Hartman

mmap locking API: convert mmap_sem comments

2020-06-09T16:39:14+00:00

Convert comments that reference mmap_sem to reference mmap_lock instead.

[akpm@linux-foundation.org: fix up linux-next leftovers]
[akpm@linux-foundation.org: s/lockaphore/lock/, per Vlastimil]
[akpm@linux-foundation.org: more linux-next fixups, per Michel]

Signed-off-by: Michel Lespinasse 
Signed-off-by: Andrew Morton 
Reviewed-by: Vlastimil Babka 
Reviewed-by: Daniel Jordan 
Cc: Davidlohr Bueso 
Cc: David Rientjes 
Cc: Hugh Dickins 
Cc: Jason Gunthorpe 
Cc: Jerome Glisse 
Cc: John Hubbard 
Cc: Laurent Dufour 
Cc: Liam Howlett 
Cc: Matthew Wilcox 
Cc: Peter Zijlstra 
Cc: Ying Han 
Link: http://lkml.kernel.org/r/20200520052908.204642-13-walken@google.com
Signed-off-by: Linus Torvalds

mmap locking API: use coccinelle to convert mmap_sem rwsem call sites

2020-06-09T16:39:14+00:00

This change converts the existing mmap_sem rwsem calls to use the new mmap
locking API instead.

The change is generated using coccinelle with the following rule:

// spatch --sp-file mmap_lock_api.cocci --in-place --include-headers --dir .

@@
expression mm;
@@
(
-init_rwsem
+mmap_init_lock
|
-down_write
+mmap_write_lock
|
-down_write_killable
+mmap_write_lock_killable
|
-down_write_trylock
+mmap_write_trylock
|
-up_write
+mmap_write_unlock
|
-downgrade_write
+mmap_write_downgrade
|
-down_read
+mmap_read_lock
|
-down_read_killable
+mmap_read_lock_killable
|
-down_read_trylock
+mmap_read_trylock
|
-up_read
+mmap_read_unlock
)
-(&mm->mmap_sem)
+(mm)

Signed-off-by: Michel Lespinasse 
Signed-off-by: Andrew Morton 
Reviewed-by: Daniel Jordan 
Reviewed-by: Laurent Dufour 
Reviewed-by: Vlastimil Babka 
Cc: Davidlohr Bueso 
Cc: David Rientjes 
Cc: Hugh Dickins 
Cc: Jason Gunthorpe 
Cc: Jerome Glisse 
Cc: John Hubbard 
Cc: Liam Howlett 
Cc: Matthew Wilcox 
Cc: Peter Zijlstra 
Cc: Ying Han 
Link: http://lkml.kernel.org/r/20200520052908.204642-5-walken@google.com
Signed-off-by: Linus Torvalds