linux-kernel - [PATCH v4 0/4] spi: cadence-qspi: Fix runtime PM and system-wide suspend

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Date: Thu, 22 Feb 2024 11:12:28 +0100
From: Théo Lebrun <theo.lebrun@...tlin.com>
To: Mark Brown <broonie@...nel.org>, Apurva Nandan <a-nandan@...com>, 
 Dhruva Gole <d-gole@...com>
Cc: linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Gregory CLEMENT <gregory.clement@...tlin.com>, 
 Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 Tawfik Bayouk <tawfik.bayouk@...ileye.com>, 
 Théo Lebrun <theo.lebrun@...tlin.com>
Subject: [PATCH v4 0/4] spi: cadence-qspi: Fix runtime PM and system-wide
 suspend

Hi,

This fixes runtime PM and system-wide suspend for the cadence-qspi
driver. Seeing how runtime PM and autosuspend are enabled by default, I
believe this affects all users of the driver.

This series has been tested on both Mobileye EyeQ5 hardware and the TI
J7200 EVM board, under s2idle.

Thanks all,
Théo

Signed-off-by: Théo Lebrun <theo.lebrun@...tlin.com>
---
Changes in v4:
- Take Reviewed-by Dhruva Gole on patch 1/4.
- Fix struct dev_pm_ops declaration to avoid -Wunused-function warning
  when CONFIG_PM_SLEEP=n. Replace SET_*_PM_OPS() by *_PM_OPS(). See
  kernel test robot warning:
  https://lore.kernel.org/oe-kbuild-all/202402221505.712Q7MSU-lkp@intel.com/
- Link to v3: https://lore.kernel.org/r/20240209-cdns-qspi-pm-fix-v3-0-540ac222f26b@bootlin.com

Changes in v3:
- Move both bugfix patches to the start of the series.
- Remove Fixes: trailer from the function renaming patch.
- Link to v2: https://lore.kernel.org/r/20240205-cdns-qspi-pm-fix-v2-0-2e7bbad49a46@bootlin.com

Changes in v2:
- Split the initial change into three separate commits, to make intents
  clearer.
- Mark controller as suspended during the system-wide suspend.
- Link to v1: https://lore.kernel.org/r/20240202-cdns-qspi-pm-fix-v1-1-3c8feb2bfdd8@bootlin.com

---
Théo Lebrun (4):
      spi: cadence-qspi: fix pointer reference in runtime PM hooks
      spi: cadence-qspi: remove system-wide suspend helper calls from runtime PM hooks
      spi: cadence-qspi: put runtime in runtime PM hooks names
      spi: cadence-qspi: add system-wide suspend and resume callbacks

 drivers/spi/spi-cadence-quadspi.c | 33 +++++++++++++++++++++------------
 1 file changed, 21 insertions(+), 12 deletions(-)
---
base-commit: 13acce918af915278e49980a3038df31845dbf39
change-id: 20240202-cdns-qspi-pm-fix-29600cc6d7bf

Best regards,
-- 
Théo Lebrun <theo.lebrun@...tlin.com>