From patchwork Thu Feb 10 22:49:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yury Norov X-Patchwork-Id: 541975 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 0156DC433FE for ; Fri, 11 Feb 2022 00:06:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346045AbiBKAG5 (ORCPT ); Thu, 10 Feb 2022 19:06:57 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:36308 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235345AbiBKAGz (ORCPT ); Thu, 10 Feb 2022 19:06:55 -0500 Received: from mail-qk1-x730.google.com (mail-qk1-x730.google.com [IPv6:2607:f8b0:4864:20::730]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 45DAE26DF; Thu, 10 Feb 2022 16:06:55 -0800 (PST) Received: by mail-qk1-x730.google.com with SMTP id bs32so6716113qkb.1; Thu, 10 Feb 2022 16:06:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=kIxNsx5t66aCekxGiYnzItzLDmvgCurjGzLHlKM8kmo=; b=kUPI1caTAiBqAVK3q8DnKRacUz2Uib6Hme9P7gr7i8kQ+e8TDEJqGlFb9zgPToD7X4 N+9XO0XYP2mYbZz74uZ8ryyWvq1dnX9hrT17tCXcrSr4PANCJ/G0mRpk/gSmP6hwaIA4 tSW8lv3cVv4eh0Fc3r/J6QFoUcItqKb2tIQyxE/nf7iYijX6DS2RQXFJKqGgFPMhUCS9 Dqf5xuMhdzQRvnaBkiEGdwqac4utkIFoMdIFFiXveNwGxaUBDmRdbQNyiyVPpzaVTcFz igRbWOfbP9PGIw7H/TiCmFN2ibo8AOWyYEUvfZNJ2d6hoCz97qFC1FNpcapXfbvgCC0D Dc2g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=kIxNsx5t66aCekxGiYnzItzLDmvgCurjGzLHlKM8kmo=; b=dZFBvUyx6I6yu5x9KI7cykgRPP61BtCZRsR3c72lrQqqd+vAXXKoPSXWqH2eRXrwxF bZZYjQQk1Fe1jxukTgyoWiPlBNvdVijIzhiCro4Wl5AHAbhxvaHsRYUv1ljd1w+DAJ4O HgWCTyYLBp+AlQZkfUpA4pHSJI/XXHi9RGWeXqkkGsBKdP4GCgqw4wkowqqO+H3SSiii kEqxsTKBnfR8MokBcSQaY5/Akp5xc80KFbhWmVcMiH/wF8v6ZRQ16pgVtgZGuC2YWdTq MYXSLXND5qqDrrJKGKibQPD2qqOMweDCvDtMmBDJFZJW0EczRbjJRrhdM7xQHss8zjuj T8Dg== X-Gm-Message-State: AOAM531HrHekkONxkoVwTEqPrMDcw05AbZB0UDkV+KncAouDGc/dWoWc 1yOxuJwSIH+Ypqd7fBB8DSY= X-Google-Smtp-Source: ABdhPJwXNB8AH9WzcydC3nOV4kHShzA6P4syYry2xqBz+Iro1F4pn0IXPMbEY20Ct9c0HLCgx/xhIg== X-Received: by 2002:a37:851:: with SMTP id 78mr5100598qki.617.1644538014344; Thu, 10 Feb 2022 16:06:54 -0800 (PST) Received: from localhost ([12.28.44.171]) by smtp.gmail.com with ESMTPSA id v5sm11133965qkp.70.2022.02.10.16.06.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Feb 2022 16:06:53 -0800 (PST) From: Yury Norov To: Yury Norov , Andy Shevchenko , Rasmus Villemoes , Andrew Morton , =?utf-8?b?TWljaGHFgiBNaXJvc8WC?= =?utf-8?b?YXc=?= , Greg Kroah-Hartman , Peter Zijlstra , David Laight , Joe Perches , Dennis Zhou , Emil Renner Berthing , Nicholas Piggin , Matti Vaittinen , Alexey Klimov , linux-kernel@vger.kernel.org, Thierry Reding , Jonathan Hunter , Sowjanya Komatineni , Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-tegra@vger.kernel.org, linux-staging@lists.linux.dev Subject: [PATCH 34/49] media: tegra-video: replace bitmap_weight with bitmap_weight_le Date: Thu, 10 Feb 2022 14:49:18 -0800 Message-Id: <20220210224933.379149-35-yury.norov@gmail.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220210224933.379149-1-yury.norov@gmail.com> References: <20220210224933.379149-1-yury.norov@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org tegra_channel_enum_format() calls bitmap_weight() to compare the weight of bitmap with a given number. We can do it more efficiently with bitmap_weight_le() because conditional bitmap_weight may stop traversing the bitmap earlier, as soon as condition is (or can't be) met. Signed-off-by: Yury Norov Acked-by: Hans Verkuil --- drivers/staging/media/tegra-video/vi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/media/tegra-video/vi.c b/drivers/staging/media/tegra-video/vi.c index d1f43f465c22..4e79a80e9307 100644 --- a/drivers/staging/media/tegra-video/vi.c +++ b/drivers/staging/media/tegra-video/vi.c @@ -436,7 +436,7 @@ static int tegra_channel_enum_format(struct file *file, void *fh, if (!IS_ENABLED(CONFIG_VIDEO_TEGRA_TPG)) fmts_bitmap = chan->fmts_bitmap; - if (f->index >= bitmap_weight(fmts_bitmap, MAX_FORMAT_NUM)) + if (bitmap_weight_le(fmts_bitmap, MAX_FORMAT_NUM, f->index)) return -EINVAL; for (i = 0; i < f->index + 1; i++, index++)