17 Jan, 2020

1 commit

• e91533114   regulator: vctrl-regulator: Avoid deadlock getting and setting the voltage ... Browse Code »

  `cat /sys/kernel/debug/regulator/regulator_summary` ends on a deadlock
  when you have a voltage controlled regulator (vctrl).

  The problem is that the vctrl_get_voltage() and vctrl_set_voltage() calls the
  regulator_get_voltage() and regulator_set_voltage() and that will try to lock
  again the dependent regulators (the regulator supplying the control voltage).

  Fix the issue by exporting the unlocked version of the regulator_get_voltage()
  and regulator_set_voltage() API so drivers that need it, like the voltage
  controlled regulator driver can use it.

  Fixes: f8702f9e4aa7 ("regulator: core: Use ww_mutex for regulators locking")
  Reported-by: Douglas Anderson
  Signed-off-by: Enric Balletbo i Serra
  Link: https://lore.kernel.org/r/20200116094543.2847321-1-enric.balletbo@collabora.com
  Signed-off-by: Mark Brown

  Enric Balletbo i Serra

  2020-01-17 23:32:27 +0800  

05 Jun, 2019

1 commit

• 9c92ab619   treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 ... Browse Code »

  Based on 1 normalized pattern(s):

  this software is licensed under the terms of the gnu general public
  license version 2 as published by the free software foundation and
  may be copied distributed and modified under those terms this
  program is distributed in the hope that it will be useful but
  without any warranty without even the implied warranty of
  merchantability or fitness for a particular purpose see the gnu
  general public license for more details

  extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

  has been chosen to replace the boilerplate/reference in 285 file(s).

  Signed-off-by: Thomas Gleixner
  Reviewed-by: Alexios Zavras
  Reviewed-by: Allison Randal
  Cc: linux-spdx@vger.kernel.org
  Link: https://lkml.kernel.org/r/20190529141900.642774971@linutronix.de
  Signed-off-by: Greg Kroah-Hartman

  Thomas Gleixner

  2019-06-05 23:36:37 +0800  

01 Apr, 2019

1 commit

• 9e488c0a5   regulator: vctrl: Remove unneeded continue statement ... Browse Code »

  Signed-off-by: Axel Lin
  Reviewed-by: Mukesh Ojha
  Reviewed-by: Matthias Kaehlcke
  Signed-off-by: Mark Brown

  Axel Lin

  2019-04-01 16:17:34 +0800  

15 Apr, 2017

1 commit

• a9bbb453b   regulator: vctrl: Fix out of bounds array access for vctrl->vtable ... Browse Code »

  Current code only allocates rdesc->n_voltages entries for vctrl->vtable.
  Thus use rdesc->n_voltages instead of n_voltages in the for loop.

  While at it, also switch to use devm_kcalloc instead of devm_kmalloc_array
  + __GFP_ZERO flag and fix the argument order.

  Signed-off-by: Axel Lin
  Signed-off-by: Mark Brown

  Axel Lin

  2017-04-15 01:01:03 +0800  

11 Apr, 2017

1 commit

• 9dee7a72d   regulator: Add driver for voltage controlled regulators ... Browse Code »

  The output voltage of a voltage controlled regulator can be controlled
  through the voltage of another regulator. The current version of this
  driver assumes that the output voltage is a linear function of the control
  voltage.

  Signed-off-by: Matthias Kaehlcke
  Acked-by: Rob Herring
  Signed-off-by: Mark Brown

  Matthias Kaehlcke

  2017-04-11 00:30:40 +0800