linux-toradex.git/drivers/block/paride, branch v5.9-rc6

treewide: Use fallthrough pseudo-keyword

2020-08-23T22:36:59+00:00

Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva

treewide: replace '---help---' in Kconfig files with 'help'

2020-06-13T16:57:21+00:00

Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.

This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.

There are a variety of indentation styles found.

  a) 4 spaces + '---help---'
  b) 7 spaces + '---help---'
  c) 8 spaces + '---help---'
  d) 1 space + 1 tab + '---help---'
  e) 1 tab + '---help---'    (correct indentation)
  f) 1 tab + 1 space + '---help---'
  g) 1 tab + 2 spaces + '---help---'

In order to convert all of them to 1 tab + 'help', I ran the
following commend:

  $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'

Signed-off-by: Masahiro Yamada

block: add a cdrom_device_info pointer to struct gendisk

2020-05-04T16:13:42+00:00

Add a pointer to the CDROM information structure to struct gendisk.
This will allow various removable media file systems to call directly
into the CDROM layer instead of abusing ioctls with kernel pointers.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Damien Le Moal 
Signed-off-by: Jens Axboe

scsi: compat_ioctl: cdrom: Replace .ioctl with .compat_ioctl in four appropriate places

2020-02-24T20:06:07+00:00

Arnd Bergmann inadvertently typoed these in d320a9551e394 and 64cbfa96551a;
they seem to be the cause of
https://bugzilla.redhat.com/show_bug.cgi?id=1801353 , invalid SCSI commands
when udev tries to query a DVD drive.

[arnd] Found another instance of the same bug, also introduced in my
compat_ioctl series.

Link: https://bugzilla.redhat.com/show_bug.cgi?id=1801353
Link: https://lore.kernel.org/r/20200219165139.3467320-1-arnd@arndb.de
Fixes: c103d6ee69f9 ("compat_ioctl: ide: floppy: add handler")
Fixes: 64cbfa96551a ("compat_ioctl: move cdrom commands into cdrom.c")
Fixes: d320a9551e39 ("compat_ioctl: scsi: move ioctl handling into drivers")
Bisected-by: Chris Murphy 
Signed-off-by: Arnd Bergmann 
Signed-off-by: Adam Williamson 
Signed-off-by: Martin K. Petersen

compat_ioctl: move cdrom commands into cdrom.c

2020-01-03T08:42:52+00:00

There is no need for the special cases for the cdrom ioctls any more now,
so make sure that each cdrom driver has a .compat_ioctl() callback and
calls cdrom_compat_ioctl() directly there.

Reviewed-by: Ben Hutchings 
Signed-off-by: Arnd Bergmann

compat_ioctl: block: handle cdrom compat ioctl in non-cdrom drivers

2020-01-03T08:33:15+00:00

Various block drivers implement the CDROMMULTISESSION,
CDROM_GET_CAPABILITY, and CDROMEJECT ioctl commands, relying on the
block layer to handle compat_ioctl mode for them.

Move this into the drivers directly as a preparation for simplifying
the block layer later.

When only integer arguments or no arguments are passed, the
same handler can be used for .ioctl and .compat_ioctl, and
when only pointer arguments are passed, the newly added
blkdev_compat_ptr_ioctl can be used.

Reviewed-by: Ben Hutchings 
Signed-off-by: Arnd Bergmann

paride/pcd: need to check if cd->disk is null in pcd_detect

2019-09-04T13:04:37+00:00

If alloc_disk fails in pcd_init_units, cd->disk & pi are empty, we need
to check if cd->disk is null in pcd_detect.

Reported-by: Hulk Robot 
Signed-off-by: zhengbin 
Signed-off-by: Jens Axboe

paride/pcd: need to set queue to NULL before put_disk

2019-09-04T13:01:02+00:00

In pcd_init_units, if blk_mq_init_sq_queue fails, need to set queue to
NULL before put_disk, otherwise null-ptr-deref Read will occur.

put_disk
  kobject_put
    disk_release
      blk_put_queue(disk->queue)

Fixes: f0d176255401 ("paride/pcd: Fix potential NULL pointer dereference and mem leak")
Reported-by: Hulk Robot 
Signed-off-by: zhengbin 
Signed-off-by: Jens Axboe

paride/pf: need to set queue to NULL before put_disk

2019-09-04T13:00:33+00:00

In pf_init_units, if blk_mq_init_sq_queue fails, need to set queue to
NULL before put_disk, otherwise null-ptr-deref Read will occur.

put_disk
  kobject_put
    disk_release
      blk_put_queue(disk->queue)

Fixes: 77218ddf46d8 ("paride: convert pf to blk-mq")
Reported-by: Hulk Robot 
Signed-off-by: zhengbin 
Signed-off-by: Jens Axboe

Merge tag 'v5.1-rc6' into for-5.2/block

2019-04-22T15:47:36+00:00

Pull in v5.1-rc6 to resolve two conflicts. One is in BFQ, in just a
comment, and is trivial. The other one is a conflict due to a later fix
in the bio multi-page work, and needs a bit more care.

* tag 'v5.1-rc6': (770 commits)
  Linux 5.1-rc6
  block: make sure that bvec length can't be overflow
  block: kill all_q_node in request_queue
  x86/cpu/intel: Lower the "ENERGY_PERF_BIAS: Set to normal" message's log priority
  coredump: fix race condition between mmget_not_zero()/get_task_mm() and core dumping
  mm/kmemleak.c: fix unused-function warning
  init: initialize jump labels before command line option parsing
  kernel/watchdog_hld.c: hard lockup message should end with a newline
  kcov: improve CONFIG_ARCH_HAS_KCOV help text
  mm: fix inactive list balancing between NUMA nodes and cgroups
  mm/hotplug: treat CMA pages as unmovable
  proc: fixup proc-pid-vm test
  proc: fix map_files test on F29
  mm/vmstat.c: fix /proc/vmstat format for CONFIG_DEBUG_TLBFLUSH=y CONFIG_SMP=n
  mm/memory_hotplug: do not unlock after failing to take the device_hotplug_lock
  mm: swapoff: shmem_unuse() stop eviction without igrab()
  mm: swapoff: take notice of completion sooner
  mm: swapoff: remove too limiting SWAP_UNUSE_MAX_TRIES
  mm: swapoff: shmem_find_swap_entries() filter out other types
  slab: store tagged freelist for off-slab slabmgmt
  ...

Signed-off-by: Jens Axboe