linux-kernel - [PATCH 0/4] ASoC: Intel: avs: move devm_kzalloc(..., size * n, ...) to devm

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Message-Id: <20250314-sound-avs-kcalloc-v1-0-985f2734c020@ethancedwards.com>
Date: Fri, 14 Mar 2025 10:38:20 -0400
From: Ethan Carter Edwards <ethan@...ancedwards.com>
To: Cezary Rojewski <cezary.rojewski@...el.com>, 
 Liam Girdwood <liam.r.girdwood@...ux.intel.com>, 
 Peter Ujfalusi <peter.ujfalusi@...ux.intel.com>, 
 Bard Liao <yung-chuan.liao@...ux.intel.com>, 
 Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>, 
 Kai Vehmanen <kai.vehmanen@...ux.intel.com>, 
 Pierre-Louis Bossart <pierre-louis.bossart@...ux.dev>, 
 Mark Brown <broonie@...nel.org>, Jaroslav Kysela <perex@...ex.cz>, 
 Takashi Iwai <tiwai@...e.com>
Cc: gustavoars@...nel.org, linux-sound@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org, 
 Ethan Carter Edwards <ethan@...ancedwards.com>
Subject: [PATCH 0/4] ASoC: Intel: avs: move devm_kzalloc(..., size * n,
 ...) to devm_kcalloc

Open coded arithmetic in allocator arguments is discouraged. Helper
functions like kcalloc or, in this case, devm_kcalloc are preferred. Not
only for readability purposes but safety purposes.

The changes move `devm_kzalloc(dev, sizeof(var) * n, GFP_KERNEL)` to
the helper function `devm_kcalloc(dev, n, sizeof(var), GFP_KERNEL)`.

Here is a series of four patches within the Intel/avs drivers that make
these changes. They are all compile tested only but should have no
effect on runtime behaviour.
    
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#open-coded-arithmetic-in-allocator-arguments
Link: https://github.com/KSPP/linux/issues/162

Signed-off-by: Ethan Carter Edwards <ethan@...ancedwards.com>
---
Ethan Carter Edwards (4):
      ASoC: Intel: avs: move devm_kzalloc(..., size * n, ...) to devm_kcalloc
      ASoC: Intel: ssm4567: move devm_kzalloc(..., size * n, ...) to devm_kcalloc
      ASoC: Intel: max98373: move devm_kzalloc(..., size * n, ...) to devm_kcalloc
      ASoC: Intel: max98927: move devm_kzalloc(..., size * n, ...) to devm_kcalloc

 sound/soc/intel/avs/boards/max98373.c | 2 +-
 sound/soc/intel/avs/boards/max98927.c | 2 +-
 sound/soc/intel/avs/boards/ssm4567.c  | 2 +-
 sound/soc/intel/avs/pcm.c             | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)
---
base-commit: da920b7df701770e006928053672147075587fb2
change-id: 20250314-sound-avs-kcalloc-91cedbc47074

Best regards,
-- 
Ethan Carter Edwards <ethan@...ancedwards.com>