From patchwork Sat Jun 22 20:42:38 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomasz Figa X-Patchwork-Id: 2766391 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id BFD37C0AB1 for ; Sat, 22 Jun 2013 20:49:00 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EBC982011B for ; Sat, 22 Jun 2013 20:48:59 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2D8F920120 for ; Sat, 22 Jun 2013 20:48:58 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UqUgT-0002IR-4s; Sat, 22 Jun 2013 20:45:24 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UqUfp-0004BD-QX; Sat, 22 Jun 2013 20:44:41 +0000 Received: from mail-bk0-x233.google.com ([2a00:1450:4008:c01::233]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UqUex-00041j-Qs for linux-arm-kernel@lists.infradead.org; Sat, 22 Jun 2013 20:43:49 +0000 Received: by mail-bk0-f51.google.com with SMTP id ji1so3757733bkc.24 for ; Sat, 22 Jun 2013 13:43:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; bh=LU5Blu7Shzpdc3BxQL7u/P0mAvvDbro9y1Gc75RBJg8=; b=yK/WOO0uCo0h/DbWs1V/hmwAgoDctDtsmWrf8U7Apv//ZL8dZ2ImeNFSCjASz+m7V2 jogtm23o5CbC/WWUZkGyCFt04aEz/whq0i7p/s3MnUc6/+MoK8qaZYZUvLKLNqYtfDC2 MDGUOh2cLGsNs20JUGsbnN/WSWmOtT1mTwF9bqdX9QVFFXNpV3zAUS74yg0Sydnw8M3y K9Y3oROKSPxcr55y6ui7FGK0hg1swHyXxP8BJG/akKUEieJe2OgBOmPNMHCA4uVYHRq2 0Ru8KpQ91uNVSVZ6whNOxEshXTMfjLk2fT07Ec/yCls3IK/0JfTXV6Z6ofAWynmCcNBz Ze6g== X-Received: by 10.204.166.197 with SMTP id n5mr2702043bky.102.1371933805788; Sat, 22 Jun 2013 13:43:25 -0700 (PDT) Received: from flatron.tomeq (87-207-52-162.dynamic.chello.pl. [87.207.52.162]) by mx.google.com with ESMTPSA id fz10sm2807471bkc.9.2013.06.22.13.43.23 for (version=TLSv1.2 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 22 Jun 2013 13:43:24 -0700 (PDT) From: Tomasz Figa To: linux-samsung-soc@vger.kernel.org Subject: [RFC PATCH v2 06/12] dmaengine: PL08x: Fix reading the byte count in cctl Date: Sat, 22 Jun 2013 22:42:38 +0200 Message-Id: <1371933764-24875-7-git-send-email-tomasz.figa@gmail.com> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1371933764-24875-1-git-send-email-tomasz.figa@gmail.com> References: <1371933764-24875-1-git-send-email-tomasz.figa@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130622_164348_053857_86FB993C X-CRM114-Status: GOOD ( 11.17 ) X-Spam-Score: -2.0 (--) Cc: alsa-devel@alsa-project.org, =?UTF-8?q?Heiko=20St=C3=BCbner?= , Padmavathi Venna , Takashi Iwai , Linus Walleij , Tomasz Figa , linux-kernel@vger.kernel.org, Giancarlo Asnaghi , Kukjin Kim , Russell King - ARM Linux , Vinod Koul , Thomas Abraham , Grant Likely , Alessandro Rubini , Arnd Bergmann , Mark Brown , Sylwester Nawrocki , Jaroslav Kysela , linux-arm-kernel@lists.infradead.org, Sangbeom Kim , Liam Girdwood , linux-spi@vger.kernel.org, Dan Williams , Olof Johansson , Alban Bedel X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-5.4 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Alban Bedel There are more fields than just SWIDTH in CH_CONTROL register, so read register value must be masked in addition to shifting. Signed-off-by: Alban Bedel Signed-off-by: Tomasz Figa Reviewed-by: Linus Walleij --- drivers/dma/amba-pl08x.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index 89b8120..1eeb911 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -469,6 +469,8 @@ static inline u32 get_bytes_in_cctl(u32 cctl) /* The source width defines the number of bytes */ u32 bytes = cctl & PL080_CONTROL_TRANSFER_SIZE_MASK; + cctl &= PL080_CONTROL_SWIDTH_MASK; + switch (cctl >> PL080_CONTROL_SWIDTH_SHIFT) { case PL080_WIDTH_8BIT: break; @@ -487,6 +489,8 @@ static inline u32 get_bytes_in_cctl_pl080s(u32 cctl, u32 cctl1) /* The source width defines the number of bytes */ u32 bytes = cctl1 & PL080S_CONTROL_TRANSFER_SIZE_MASK; + cctl &= PL080_CONTROL_SWIDTH_MASK; + switch (cctl >> PL080_CONTROL_SWIDTH_SHIFT) { case PL080_WIDTH_8BIT: break;