From patchwork Mon Aug 5 21:51:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 13754202 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5F290C3DA4A for ; Mon, 5 Aug 2024 21:53:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=LKaIkakCgP1OJn4iZqkkYHeziSGxZPmIwKaM52VVkTg=; b=RcJKLIeYF11xLHqhn491Jit4/B cI2Mt/UlZh3V1LgF5KxZ1Gw60VZTmMy/8uz337YUqVhKRdcxU13gv7zapELiuJFMIjrNLFClmRK3h CcRl4dakt5Hb4jQw2lTL+g6TDl3tLhUbnSL2jLSMnYeJgjiJQNRHxZfTVXJsTtHXtbc9THaKkvr10 w8XRxT6pTizSRIUq+uTTEmX3RHJ4KEv+1cn6TMwt/t0enzNiO1PtxBOlJuZB4acJF7T+J1NNsQHkc 9WfOBLy2fRY9fjA36RHorm42jCSFp8KYDMaYCZ+YkOYZ88+jExFan9K/48JFJ2jJFon66fRiZPNgM 54AlqvUQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sb5dY-0000000HONY-0f9E; Mon, 05 Aug 2024 21:53:04 +0000 Received: from zeus03.de ([194.117.254.33] helo=mail.zeus03.de) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sb5c5-0000000HO6I-1hwb for linux-arm-kernel@lists.infradead.org; Mon, 05 Aug 2024 21:51:35 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= sang-engineering.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; s=k1; bh=LKaIkakCgP1OJn4iZqkkYHeziSGxZPmIwKaM52VVkTg=; b=h4t1hu wMTsC9qc3C62TVIeqEMaY8+r5sMMSzM6uVLCks/6/s2gcfVmHLWFGslDo+/DL5ZX 8fQBRD0bx/TH7ibjtPGxRsYfZFSRsbyQR5PD5PEK2krIinLg/vyrTuPycKaSe6nQ 0antjRyQ4njYi/5T+hdQDPFZWzPuE87Kgnmsb58fZ15aO71Vou28g//dj601/bwU xkpQIKrIGdXN5JXM38nsQAtDDU2UPkJ0yZpP4RC1U1nwoUOMT9QJw1Lc2d33cEg7 /dt36q75UQRBiji0CXiYWR6L1sFUXgpufLNgTpLiVoWUA8bJ3/rOiz/cIMJRRvQ5 st/Pj9rKvSyyXneQ== Received: (qmail 18193 invoked from network); 5 Aug 2024 23:51:29 +0200 Received: by mail.zeus03.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 5 Aug 2024 23:51:29 +0200 X-UD-Smtp-Session: l3s3148p1@e37srfYe5JpehhYC From: Wolfram Sang To: linux-media@vger.kernel.org Cc: Wolfram Sang , Sylwester Nawrocki , Mauro Carvalho Chehab , Krzysztof Kozlowski , Alim Akhtar , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org Subject: [PATCH v2 4/8] media: fimc-is: use 'time_left' variable with wait_event_timeout() Date: Mon, 5 Aug 2024 23:51:17 +0200 Message-ID: <20240805215123.3528-5-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240805215123.3528-1-wsa+renesas@sang-engineering.com> References: <20240805215123.3528-1-wsa+renesas@sang-engineering.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240805_145133_743891_96DA0AD1 X-CRM114-Status: GOOD ( 13.32 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org There is a confusing pattern in the kernel to use a variable named 'timeout' to store the result of wait_event_timeout() causing patterns like: timeout = wait_event_timeout(...) if (!timeout) return -ETIMEDOUT; with all kinds of permutations. Use 'time_left' as a variable to make the code self explaining. Fix to the proper variable type 'long' while here. Signed-off-by: Wolfram Sang --- drivers/media/platform/samsung/exynos4-is/fimc-core.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/media/platform/samsung/exynos4-is/fimc-core.c b/drivers/media/platform/samsung/exynos4-is/fimc-core.c index aae74b501a42..adfc2d73d04b 100644 --- a/drivers/media/platform/samsung/exynos4-is/fimc-core.c +++ b/drivers/media/platform/samsung/exynos4-is/fimc-core.c @@ -822,7 +822,7 @@ static int fimc_clk_get(struct fimc_dev *fimc) static int fimc_m2m_suspend(struct fimc_dev *fimc) { unsigned long flags; - int timeout; + long time_left; spin_lock_irqsave(&fimc->slock, flags); if (!fimc_m2m_pending(fimc)) { @@ -833,12 +833,12 @@ static int fimc_m2m_suspend(struct fimc_dev *fimc) set_bit(ST_M2M_SUSPENDING, &fimc->state); spin_unlock_irqrestore(&fimc->slock, flags); - timeout = wait_event_timeout(fimc->irq_queue, - test_bit(ST_M2M_SUSPENDED, &fimc->state), - FIMC_SHUTDOWN_TIMEOUT); + time_left = wait_event_timeout(fimc->irq_queue, + test_bit(ST_M2M_SUSPENDED, &fimc->state), + FIMC_SHUTDOWN_TIMEOUT); clear_bit(ST_M2M_SUSPENDING, &fimc->state); - return timeout == 0 ? -EAGAIN : 0; + return time_left == 0 ? -EAGAIN : 0; } static int fimc_m2m_resume(struct fimc_dev *fimc)