linux.git/drivers/mmc/card, branch v3.19

mmc: queue: Improve error handling during allocation of bounce buffers

2014-12-05T09:33:17+00:00

Allocation of previous bounce buffer in mmc_init_queue when the current
bounce buffer allocation fails was leading to a crash later in
__blk_segment_map_sg. Error handling is improved by allocating previous
bounce buffer only if the current bounce buffer allocation succeeds.

Signed-off-by: Bhuvanesh Surachari 
Signed-off-by: Harish Jenny K N 
Signed-off-by: Ulf Hansson

mmc: block: Increase max_devices

2014-11-26T13:30:59+00:00

Currently the driver imposes a limit of 256 total minor numbers,
apparently based on the historic Unix/Linux limit.  This is quite
restrictive, particularly if we raise the maximum number of
partitions per card to 256 to match sd.

In order to make the full minor number space available we would
have to replace the static dev_use and name_use arrays with struct
ida.  But we can at least allow use of 256 cards rather than just
256 minors, with only a small change.

Signed-off-by: Ben Hutchings 
Signed-off-by: Ulf Hansson

mmc: mmc_test: Extend "Badly aligned" tests for 8-byte alignment

2014-11-10T11:40:54+00:00

The "Badly aligned" tests, test reading/writing with alignments
of 1,2 and 3.  SDHCI now has 64-bit ADMA which has 8-byte
alignment, so extend the tests to test up to 7.

Signed-off-by: Adrian Hunter 
Signed-off-by: Ulf Hansson

mmc: block: Use mmc_get_ext_csd() instead of mmc_send_ext_csd()

2014-11-10T11:40:44+00:00

By using mmc_get_ext_csd() in favor of mmc_send_ext_csd, we decrease
code duplication.

Signed-off-by: Ulf Hansson

mmc: block: Use dev_set|get_drvdata()

2014-11-10T11:40:34+00:00

In most of the cases mmc_get|set_drvdata() didn't simplify code, which
should be the primary reason for such macros.

Let's remove them and convert to the common device_driver macros,
dev_set|get_drvdata() instead.

Signed-off-by: Ulf Hansson

mmc: core: Convert mmc_driver to device_driver

2014-11-10T11:40:33+00:00

The struct mmc_driver adds an extra layer on top of the struct
device_driver. That would be fine, if there were a good reason, but
that's not the case.

Let's simplify code by converting to the common struct device_driver
instead and thus also removing superfluous overhead.

Signed-off-by: Ulf Hansson

mmc: core: Convert the mmc_driver to use the modern PM ops

2014-11-10T11:40:33+00:00

Instead of having specific mmc system PM callbacks for the mmc driver,
let's convert to use the common ones.

Signed-off-by: Ulf Hansson

mmc: block: add newline to sysfs display of force_ro

2014-11-10T11:40:24+00:00

Make force_ro consistent with other sysfs entries.

Fixes: 371a689f64b0d ('mmc: MMC boot partitions support')
Cc: Andrei Warkentin 
Signed-off-by: Baruch Siach 
Signed-off-by: Ulf Hansson

Merge branch 'for-3.18/drivers' of git://git.kernel.dk/linux-block

2014-10-18T19:12:45+00:00

Pull block layer driver update from Jens Axboe:
 "This is the block driver pull request for 3.18.  Not a lot in there
  this round, and nothing earth shattering.

   - A round of drbd fixes from the linbit team, and an improvement in
     asender performance.

   - Removal of deprecated (and unused) IRQF_DISABLED flag in rsxx and
     hd from Michael Opdenacker.

   - Disable entropy collection from flash devices by default, from Mike
     Snitzer.

   - A small collection of xen blkfront/back fixes from Roger Pau Monné
     and Vitaly Kuznetsov"

* 'for-3.18/drivers' of git://git.kernel.dk/linux-block:
  block: disable entropy contributions for nonrot devices
  xen, blkfront: factor out flush-related checks from do_blkif_request()
  xen-blkback: fix leak on grant map error path
  xen/blkback: unmap all persistent grants when frontend gets disconnected
  rsxx: Remove deprecated IRQF_DISABLED
  block: hd: remove deprecated IRQF_DISABLED
  drbd: use RB_DECLARE_CALLBACKS() to define augment callbacks
  drbd: compute the end before rb_insert_augmented()
  drbd: Add missing newline in resync progress display in /proc/drbd
  drbd: reduce lock contention in drbd_worker
  drbd: Improve asender performance
  drbd: Get rid of the WORK_PENDING macro
  drbd: Get rid of the __no_warn and __cond_lock macros
  drbd: Avoid inconsistent locking warning
  drbd: Remove superfluous newline from "resync_extents" debugfs entry.
  drbd: Use consistent names for all the bi_end_io callbacks
  drbd: Use better variable names

block: disable entropy contributions for nonrot devices

2014-10-04T16:55:32+00:00

Clear QUEUE_FLAG_ADD_RANDOM in all block drivers that set
QUEUE_FLAG_NONROT.

Historically, all block devices have automatically made entropy
contributions.  But as previously stated in commit e2e1a148 ("block: add
sysfs knob for turning off disk entropy contributions"):
    - On SSD disks, the completion times aren't as random as they
      are for rotational drives. So it's questionable whether they
      should contribute to the random pool in the first place.
    - Calling add_disk_randomness() has a lot of overhead.

There are more reliable sources for randomness than non-rotational block
devices.  From a security perspective it is better to err on the side of
caution than to allow entropy contributions from unreliable "random"
sources.

Signed-off-by: Mike Snitzer 
Signed-off-by: Jens Axboe