1. Jan 13, 2020
  2. Jan 10, 2020
    • Olivier Moysan's avatar
      ASoC: stm32: dfsdm: fix 16 bits record · 8e55ea19
      Olivier Moysan authored
      In stm32_afsdm_pcm_cb function, the transfer size is provided in bytes.
      However, samples are copied as 16 bits words from iio buffer.
      Divide by two the transfer size, to copy the right number of samples.
      
      Fixes: 1e7f6e1c
      
       ("ASoC: stm32: dfsdm: add 16 bits audio record support")
      
      Signed-off-by: default avatarOlivier Moysan <olivier.moysan@st.com>
      Link: https://lore.kernel.org/r/20200110131131.3191-1-olivier.moysan@st.com
      
      
      Signed-off-by: default avatarMark Brown <broonie@kernel.org>
      8e55ea19
    • Olivier Moysan's avatar
      ASoC: stm32: sai: fix possible circular locking · a14bf98c
      Olivier Moysan authored
      In current driver, locks can be taken as follows:
      - Register access: take a lock on regmap config and then on clock.
      - Master clock provider: take a lock on clock and then on regmap config.
      This can lead to the circular locking summarized below.
      
      Remove peripheral clock management through regmap framework, and manage
      peripheral clock in driver instead. On register access, lock on clock
      is taken first, which allows to avoid possible locking issue.
      
      [ 6696.561513] ======================================================
      [ 6696.567670] WARNING: possible circular locking dependency detected
      [ 6696.573842] 4.19.49 #866 Not tainted
      [ 6696.577397] ------------------------------------------------------
      [ 6696.583566] pulseaudio/6439 is trying to acquire lock:
      [ 6696.588697] 87b0a25b (enable_lock){..-.}, at: clk_enable_lock+0x64/0x128
      [ 6696.595377]
      [ 6696.595377] but task is already holding lock:
      [ 6696.601197] d858f825 (stm32_sai_sub:1342:(sai->regmap_config)->lock){....}
      ...
      [ 6696.812513]  Possible unsafe locking scenario:
      [ 6696.812513]
      [ 6696.818418]        CPU0                    CPU1
      [ 6696.822935]        ----                    ----
      [ 6696.827451]   lock(stm32_sai_sub:1342:(sai->regmap_config)->lock);
      [ 6696.833618]                                lock(enable_lock);
      [ 6696.839350]                                lock(stm32_sai_sub:1342:
                                                    (sai->regmap_config)->lock);
      [ 6696.848035]   lock(enable_lock);
      
      Fixes: 03e78a24
      
       ("ASoC: stm32: sai: add h7 support")
      
      Signed-off-by: default avatarOlivier Moysan <olivier.moysan@st.com>
      Link: https://lore.kernel.org/r/20200109083254.478-1-olivier.moysan@st.com
      
      
      Signed-off-by: default avatarMark Brown <broonie@kernel.org>
      a14bf98c
  3. Jan 08, 2020
  4. Jan 07, 2020
  5. Jan 03, 2020
  6. Dec 25, 2019
  7. Dec 19, 2019
  8. Dec 16, 2019
  9. Dec 10, 2019
  10. Dec 09, 2019
  11. Dec 04, 2019
  12. Dec 03, 2019
  13. Nov 27, 2019
  14. Nov 25, 2019