From patchwork Fri May 12 14:14:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joy Chakraborty X-Patchwork-Id: 13239386 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7BCF2C77B7F for ; Fri, 12 May 2023 14:15:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241480AbjELOPQ (ORCPT ); Fri, 12 May 2023 10:15:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46912 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241255AbjELOPN (ORCPT ); Fri, 12 May 2023 10:15:13 -0400 Received: from mail-yw1-x1149.google.com (mail-yw1-x1149.google.com [IPv6:2607:f8b0:4864:20::1149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3EB2C13859 for ; Fri, 12 May 2023 07:15:11 -0700 (PDT) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-560def4d06dso60602877b3.3 for ; Fri, 12 May 2023 07:15:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1683900911; x=1686492911; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=7kJtzV8QKLK33nINo9QDGOG+IeWyuMdmVEqS+yux294=; b=73+KE2jJZgkKQVWCaUtcFRpHwxmCoknACAnlzWzTTYdIeY0sf1xAPMDgtao4FVuH4k cIXrqnoPUk9E9aw5oY+NH0+jpuVYn11HOwCNYKqqhyAGlgtS8CuLEkii2U8zX7IDZGG3 tlE3p6UYcl+Dl7nnZLCUsFMsZHAaumD1Hky/+FyLVDvK5mKqHYq7x4LBEhc2fAIii/2H yPQQh3WUAMDhsWLQPzOgM2V6SxOObNDmTh0RskA9oAhKJX3QfNpu7Df6AIEjOpTY2N4T xslSmLB6C898lbkzltwNSx1CNN9tRFjI/b5qSyKnAI4MQmIHDWG5CVYIHlhWqrVQXrDd gaMg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683900911; x=1686492911; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=7kJtzV8QKLK33nINo9QDGOG+IeWyuMdmVEqS+yux294=; b=C01sJtnUX1IN/sX84sihjb7hPVt3WlF1qcNSD7nZcc5PZjBGc0itBOn6N6K28/HLio h6U/TMm9MLlZ7zhRFpkpp0KohWC7i4pNLezEKs3m8w5m/32FVtYOgnx6lK5EZVNeUUKi RmKVIvfg61uMiks8ekbJJpVsVf6GQrsG2EJHpcwrhfkiIpCYVO4sbOTWHnkVdIj9Gult hQwpAGbeYQEyOhNceTDauVt5iEjFX2TBYRRlFrO4YqEGzXn7XqjUCaXmtLxIcXNDaPPn +OxaktUZdvVHdCoo0dmPGQXzIAOznAobVx6IglrSNHOLtbcbVVZm6/BR2CgkeIAKPKr6 tgGg== X-Gm-Message-State: AC+VfDwwtuijTRbKmX6KrseF0VethIJ77ycBF3hHVqJkoCBDFIhTKudE UiUm3hsrii2f5pciXDtWNxdYujL5j1ElOA== X-Google-Smtp-Source: ACHHUZ5FF1KDxHSmDdCADl9UuEtrVgD3r0eClUYyRAGVWtfRWyouNuYTfOYNJtJsrlXdAXmgpxOCHVAtwCX34Q== X-Received: from joychakr.c.googlers.com ([fda3:e722:ac3:cc00:4f:4b78:c0a8:6ea]) (user=joychakr job=sendgmr) by 2002:a81:430b:0:b0:55d:9a6d:8ce5 with SMTP id q11-20020a81430b000000b0055d9a6d8ce5mr15219383ywa.1.1683900911005; Fri, 12 May 2023 07:15:11 -0700 (PDT) Date: Fri, 12 May 2023 14:14:41 +0000 In-Reply-To: <20230512141445.2026660-1-joychakr@google.com> Mime-Version: 1.0 References: <20230512141445.2026660-1-joychakr@google.com> X-Mailer: git-send-email 2.40.1.606.ga4b1b128d6-goog Message-ID: <20230512141445.2026660-3-joychakr@google.com> Subject: [PATCH v2 2/6] dmaengine: pl330: Use FFS to calculate burst size From: Joy Chakraborty To: Vinod Koul Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, manugautam@google.com, danielmentz@google.com, sjadavani@google.com, Joy Chakraborty Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org Use __ffs to calculate burst size in pl330_prep_dma_memcpy() for consistency across the driver as other functions already use __ffs for the same functionality. Signed-off-by: Joy Chakraborty --- drivers/dma/pl330.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index c006e481b4c5..39a66ff29e27 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -2804,10 +2804,7 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst, while ((src | dst | len) & (burst - 1)) burst /= 2; - desc->rqcfg.src_brst_size = 0; - while (burst != (1 << desc->rqcfg.src_brst_size)) - desc->rqcfg.src_brst_size++; - + desc->rqcfg.src_brst_size = __ffs(burst); desc->rqcfg.src_brst_len = get_burst_len(desc, len); /* * If burst size is smaller than bus width then make sure we only