From mboxrd@z Thu Jan 1 00:00:00 1970 From: Baruch Siach Subject: [PATCH] i2c: designware: retry transfer on transient failure Date: Wed, 23 Dec 2015 18:43:24 +0200 Message-ID: Return-path: Received: from guitar.tcltek.co.il ([192.115.133.116]:50627 "EHLO mx.tkos.co.il" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752946AbbLWQn6 (ORCPT ); Wed, 23 Dec 2015 11:43:58 -0500 Sender: linux-i2c-owner@vger.kernel.org List-Id: linux-i2c@vger.kernel.org To: Andy Shevchenko , Jarkko Nikula , Mika Westerberg Cc: linux-i2c@vger.kernel.org, Wolfram Sang , Rolland Chau , Baruch Siach Set the i2c_adapter retries field to a sensible value. This allows the i2c core to retry master_xfer() when it returns -EAGAIN. Currently the i2c-designware driver returns -EAGAIN only on Tx arbitration failure (DW_IC_TX_ARB_LOST). Reported-by: Rolland Chau Signed-off-by: Baruch Siach --- drivers/i2c/busses/i2c-designware-core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/i2c/busses/i2c-designware-core.c b/drivers/i2c/busses/i2c-designware-core.c index de7fbbb374cd..f7b34b360dc9 100644 --- a/drivers/i2c/busses/i2c-designware-core.c +++ b/drivers/i2c/busses/i2c-designware-core.c @@ -860,6 +860,7 @@ int i2c_dw_probe(struct dw_i2c_dev *dev) snprintf(adap->name, sizeof(adap->name), "Synopsys DesignWare I2C adapter"); + adap->retries = 3; adap->algo = &i2c_dw_algo; adap->dev.parent = dev->dev; i2c_set_adapdata(adap, dev); -- 2.6.4