linux.git/drivers/block/paride/pf.c, branch master

drivers/block: Remove PARIDE core and high-level protocols

2023-01-31T01:41:32+00:00

Remove PARIDE core and high level protocols, taking care not to break
low-level drivers (used by pata_parport). Also update documentation.

Signed-off-by: Ondrej Zary 
Acked-by: Jens Axboe 
Signed-off-by: Damien Le Moal

block: remove blk_cleanup_disk

2022-06-28T12:33:15+00:00

blk_cleanup_disk is nothing but a trivial wrapper for put_disk now,
so remove it.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Hannes Reinecke 
Link: https://lore.kernel.org/r/20220619060552.1850436-7-hch@lst.de
Signed-off-by: Jens Axboe

block: remove the ->rq_disk field in struct request

2021-11-29T13:41:29+00:00

Just use the disk attached to the request_queue instead.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Chaitanya Kulkarni 
Reviewed-by: Martin K. Petersen 
Link: https://lore.kernel.org/r/20211126121802.2090656-4-hch@lst.de
Signed-off-by: Jens Axboe

block: remove GENHD_FL_EXT_DEVT

2021-11-29T13:38:35+00:00

All modern drivers can support extra partitions using the extended
dev_t.  In fact except for the ioctl method drivers never even see
partitions in normal operation.

So remove the GENHD_FL_EXT_DEVT and allow extra partitions for all
block devices that do support partitions, and require those that
do not support partitions to explicit disallow them using
GENHD_FL_NO_PART.

Signed-off-by: Christoph Hellwig 
Link: https://lore.kernel.org/r/20211122130625.1136848-12-hch@lst.de
Signed-off-by: Jens Axboe

pf: fix error codes in pf_init_unit()

2021-10-18T20:42:16+00:00

Return a negative error code instead of success on these error paths.

Fixes: fb367e6baeb0 ("pf: cleanup initialization")
Signed-off-by: Dan Carpenter 
Link: https://lore.kernel.org/r/20211001122654.GB2283@kili
Signed-off-by: Jens Axboe

pf: add error handling support for add_disk()

2021-10-18T20:41:37+00:00

We never checked for errors on add_disk() as this function
returned void. Now that this is fixed, use the shiny new
error handling.

Signed-off-by: Luis Chamberlain 
Signed-off-by: Jens Axboe

pf: cleanup initialization

2021-10-18T20:41:36+00:00

Refactor the pf initialization to have a dedicated helper to initialize
a single disk.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Jens Axboe

pf: use blk_mq_alloc_disk

2021-06-11T17:53:02+00:00

Use the blk_mq_alloc_disk API to simplify the gendisk and request_queue
allocation.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Chaitanya Kulkarni 
Link: https://lore.kernel.org/r/20210602065345.355274-7-hch@lst.de
Signed-off-by: Jens Axboe

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/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