From mboxrd@z Thu Jan  1 00:00:00 1970
From: Oleksij Rempel <o.rempel@pengutronix.de>
Subject: [PATCH v5 1/2] i2c: imx: notify about real errors on dma
 i2c_imx_dma_request
Date: Wed,  9 Jan 2019 06:56:49 +0100
Message-ID: <20190109055650.32259-2-o.rempel@pengutronix.de>
References: <20190109055650.32259-1-o.rempel@pengutronix.de>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org>
In-Reply-To: <20190109055650.32259-1-o.rempel@pengutronix.de>
List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-arm-kernel>,
 <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe>
List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/>
List-Post: <mailto:linux-arm-kernel@lists.infradead.org>
List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help>
List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>,
 <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe>
Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org>
Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org
To: Wolfram Sang <wsa@the-dreams.de>, Shawn Guo <shawnguo@kernel.org>, Sascha Hauer <s.hauer@pengutronix.de>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>, linux-i2c@vger.kernel.org, Pengutronix Kernel Team <kernel@pengutronix.de>, Fabio Estevam <fabio.estevam@nxp.com>, linux-arm-kernel@lists.infradead.org, NXP Linux Team <linux-imx@nxp.com>
List-Id: linux-i2c@vger.kernel.org
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