From nobody Wed Feb 11 20:55:38 2026 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 547FEC77B7C for ; Thu, 4 May 2023 14:59:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230367AbjEDO7L (ORCPT ); Thu, 4 May 2023 10:59:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52444 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230211AbjEDO7D (ORCPT ); Thu, 4 May 2023 10:59:03 -0400 Received: from mail-yw1-x114a.google.com (mail-yw1-x114a.google.com [IPv6:2607:f8b0:4864:20::114a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F06683AA3 for ; Thu, 4 May 2023 07:58:36 -0700 (PDT) Received: by mail-yw1-x114a.google.com with SMTP id 00721157ae682-55a7d1f6914so8438867b3.1 for ; Thu, 04 May 2023 07:58:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1683212290; x=1685804290; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=FA/v04s+rMO6cV89w8yi7EFtwX7zbYFrIK72OYPFMEw=; b=FMJmvHZO0oQQ142FoQrFK15pvzpeXL1Lo2mjHlVRciBbfAk63P5FASSKbn0+TctAPZ 9WnMt+oGJjdflLbJEEShaU6sl2k2KcRxUM5D4yNimLQz+vAMsWCX1PSVlaxoIAkX9yen jw+7QzQyL8uQJwb6Cc8wkavUL9Y1N9OFgp2yMwDiBOXBVIp9M90E3G8P+2iGB9XHYJK/ mcrAQUTuRiiNbcgV4GuYDOpNbDdyANQxTJxpn+AVruKnn4/mG+Zrz6l+a0CKYzFjJVw1 R/F9OkCp0LXptXNjrM/2oSWTf6t1etVlMi4TtK9SsxiJd6gPu7Uglx7mJC72ZGft99P7 psPA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683212290; x=1685804290; 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=FA/v04s+rMO6cV89w8yi7EFtwX7zbYFrIK72OYPFMEw=; b=RFwktXcNtOd5pOYDCNKfj4HaGWOUw1cOS/vLfUPrubhJowWR/uith/+5H99RF+r+xt 3Qxqh/xjatH7D1v2HAnB7SRr/Aj2oABICteOpEMMsgII09KJUZkukx7rP+Iii75p25g9 pDWoYiLnJpa2HopyorbW1QnRG0bsGTKd+7Rb1M2uA1z5aQOO+mxSECBy/PXtqWEVbWwQ WA4SDp7WAdMHKZ6KtAyI62Pwn7sObHp/vXpzxFkvxBJ1b2Prgq5xXAQkZKnkEseSGSYq 6yz7BZWRa9Pr4v038im2HamorrUPWt2hBZT8H4c9jcm4pUb9ajkBTW+G3mySJuS5kEmD 4UXw== X-Gm-Message-State: AC+VfDyZQ7vDMv6OFSVK+mh8CIO7hxRcTWfqRI7VswCSPk/fuJRvtjnF hJUJSqwp51VKB4kDNPts3QoQLtbW+j0NmQ== X-Google-Smtp-Source: ACHHUZ4ZHjCWkvdGnfu37SUozBAPIr2xM2xyUC8ahsbgKQ2dlv/U/mQ7lNPYnTFCoer9oo54iv9Ny5b8S7HDoA== X-Received: from joychakr.c.googlers.com ([fda3:e722:ac3:cc00:4f:4b78:c0a8:6ea]) (user=joychakr job=sendgmr) by 2002:a81:c148:0:b0:559:d8ad:560d with SMTP id e8-20020a81c148000000b00559d8ad560dmr1388760ywl.5.1683212290122; Thu, 04 May 2023 07:58:10 -0700 (PDT) Date: Thu, 4 May 2023 14:57:32 +0000 In-Reply-To: <20230504145737.286444-1-joychakr@google.com> Mime-Version: 1.0 References: <20230504145737.286444-1-joychakr@google.com> X-Mailer: git-send-email 2.40.1.495.gc816e09b53d-goog Message-ID: <20230504145737.286444-3-joychakr@google.com> Subject: [PATCH 2/7] dmaengine: pl330: Use FFS to calculate burst size From: Joy Chakraborty To: Vinod Koul , Rob Herring , Krzysztof Kozlowski 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: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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_add= r_t dst, while ((src | dst | len) & (burst - 1)) burst /=3D 2; =20 - desc->rqcfg.src_brst_size =3D 0; - while (burst !=3D (1 << desc->rqcfg.src_brst_size)) - desc->rqcfg.src_brst_size++; - + desc->rqcfg.src_brst_size =3D __ffs(burst); desc->rqcfg.src_brst_len =3D get_burst_len(desc, len); /* * If burst size is smaller than bus width then make sure we only --=20 2.40.1.495.gc816e09b53d-goog