linux-kernel - [PATCH v2 0/2] i2c: aspeed: Late ack Tx done irqs and fix unhandled Tx done with NAK

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Message-Id: <20210616031046.2317-1-quan@os.amperecomputing.com>
Date:   Wed, 16 Jun 2021 10:10:44 +0700
From:   Quan Nguyen <quan@...amperecomputing.com>
To:     Brendan Higgins <brendanhiggins@...gle.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        Wolfram Sang <wsa@...nel.org>,
        Jae Hyun Yoo <jae.hyun.yoo@...ux.intel.com>,
        Guenter Roeck <linux@...ck-us.net>, linux-i2c@...r.kernel.org,
        openbmc@...ts.ozlabs.org, linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Cc:     Open Source Submission <patches@...erecomputing.com>,
        Phong Vo <phong@...amperecomputing.com>,
        "Thang Q . Nguyen" <thang@...amperecomputing.com>
Subject: [PATCH v2 0/2] i2c: aspeed: Late ack Tx done irqs and fix unhandled Tx done with NAK

This series consists of two patches to fix the below issues observed
when testing with slave mode:
  + Unhandled Tx done with NAK
  + Early ack'ed of Tx done (ACK and NAK) causing "Unexpected Ack on
  read request".

v2:
  + Split these patches to separate series [Joel]
  + Added the Fixes lines [Joel]
  + Fixed multiline comment [Joel]
  + Refactor irq clearing code [Joel, Guenter]
  + Revised commit message [Joel, Quan]

v1:
  + These patches are first introduced in
  https://lkml.org/lkml/2021/5/19/205

Quan Nguyen (2):
  i2c: aspeed: Fix unhandled Tx done with NAK
  i2c: aspeed: Acknowledge Tx done with and without ACK irq late

 drivers/i2c/busses/i2c-aspeed.c | 22 ++++++++++++++--------
 1 file changed, 14 insertions(+), 8 deletions(-)

-- 
2.28.0