On Thu, 7 May 2020 23:33:51 +0200, Arnd Bergmann wrote:
The wov_hotword_model_put() function has multiple large variables on its stack, the largest of which is the result of SHASH_DESC_ON_STACK(). In total, this exceeds the warning limit for 32-bit architectures:
sound/soc/codecs/cros_ec_codec.c:776:12: error: stack frame size of 1152 bytes in function 'wov_hotword_model_put' [-Werror,-Wframe-larger-than=]
The function already has a dynamic crypto_alloc_shash() allocation, so using kmalloc() for the descriptor is correct as well and does not introduce any additional failure scenarios. With this, the stack usage of wov_hotword_model_put() gets reduced to 480 bytes in my test configuration.
Applied to
local tree asoc/for-5.7
Thanks!
[1/1] ASoC: cros_ec_codec: allocate shash_desc dynamically (no commit info)
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Thanks, Mark