Path: csiph.com!weretis.net!feeder4.news.weretis.net!news.mixmin.net!aioe.org!bofh.it!news.nic.it!robomod From: Chuah Kim Tatt Newsgroups: linux.kernel Subject: [PATCH 0/2] Fix DNV HSUART RX DMA timeout interrupt issue Date: Fri, 13 May 2016 10:20:02 +0200 Message-ID: X-Original-To: gregkh@linuxfoundation.org, vinod.koul@intel.com X-Extloop1: 1 X-Ironport-Av: E=Sophos;i="5.24,613,1455004800"; d="scan'208";a="102514911" X-Mailer: git-send-email 1.9.1 Sender: robomod@news.nic.it List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Approved: robomod@news.nic.it Lines: 20 Organization: linux.* mail to news gateway X-Original-Cc: heikki.krogerus@linux.intel.com, andriy.shevchenko@linux.intel.com, mika.westerberg@linux.intel.com, kim.tatt.chuah@intel.com, linux-kernel@vger.kernel.org, jui.nee.tan@intel.com X-Original-Date: Fri, 13 May 2016 16:15:18 +0800 X-Original-Message-ID: <1463127320-13943-1-git-send-email-kim.tatt.chuah@intel.com> X-Original-Sender: linux-kernel-owner@vger.kernel.org Xref: csiph.com linux.kernel:1400600 From: "Chuah, Kim Tatt" These patches fix a DNV HSUART DMA issue with timeout interrupts which causes: - RX to be padded with zeros up to 4kB when <4kB should be received - RX to be truncated at 4kB when >4kB should be received. These patches have been tested on Intel Denverton platform. Chuah, Kim Tatt (2): dmaengine: hsu: Export hsu_dma_get_status() serial: 8250_mid: Read RX buffer on RX DMA timeout for DNV drivers/dma/hsu/hsu.c | 90 +++++++++++++++++++++++++++++--------- drivers/dma/hsu/pci.c | 11 ++++- drivers/tty/serial/8250/8250_mid.c | 24 +++++++--- include/linux/dma/hsu.h | 14 ++++-- 4 files changed, 108 insertions(+), 31 deletions(-) -- 1.9.1