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Date: Mon, 5 Sep 2022 11:52:38 +0530 From: Vinod Koul <vkoul@...nel.org> To: Christophe JAILLET <christophe.jaillet@...adoo.fr> Cc: Maxime Coquelin <mcoquelin.stm32@...il.com>, Alexandre Torgue <alexandre.torgue@...s.st.com>, linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org, dmaengine@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com, linux-arm-kernel@...ts.infradead.org Subject: Re: [PATCH] dmaengine: stm32-dmamux: Simplify code and save a few bytes of memory On 30-07-22, 22:07, Christophe JAILLET wrote: > STM32_DMAMUX_MAX_DMA_REQUESTS is small (i.e. 32) and when the 'dma_inuse' > bitmap is allocated, there is already a check that 'dma_req' is <= this > limit. > > So, there is no good reason to dynamically allocate this bitmap. This > just waste some memory and some cycles. > > Use DECLARE_BITMAP with the maximum bitmap size instead. Applied, thanks -- ~Vinod
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