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Wed, 9 Sep 2020 20:31:02 GMT Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5F02F78064; Wed, 9 Sep 2020 20:31:02 +0000 (GMT) Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B0F9178066; Wed, 9 Sep 2020 20:31:01 +0000 (GMT) Received: from SHADE6A.ibmuc.com (unknown [9.163.76.239]) by b03ledav004.gho.boulder.ibm.com (Postfix) with ESMTP; Wed, 9 Sep 2020 20:31:01 +0000 (GMT) From: Eddie James To: linux-input@vger.kernel.org Cc: devicetree@vger.kernel.org, linux-aspeed@lists.ozlabs.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, robh+dt@kernel.org, dmitry.torokhov@gmail.com, joel@jms.id.au, andrew@aj.id.au, benh@kernel.crashing.org, brendanhiggins@google.com, wsa@kernel.org, rentao.bupt@gmail.com, ryan_chen@aspeedtech.com Subject: [PATCH v3 3/5] i2c: aspeed: Mask IRQ status to relevant bits Date: Wed, 9 Sep 2020 15:30:57 -0500 Message-Id: <20200909203059.23427-4-eajames@linux.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200909203059.23427-1-eajames@linux.ibm.com> References: <20200909203059.23427-1-eajames@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-09-09_16:2020-09-09,2020-09-09 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 clxscore=1015 mlxscore=0 lowpriorityscore=0 phishscore=0 priorityscore=1501 mlxlogscore=932 malwarescore=0 spamscore=0 suspectscore=1 bulkscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2009090178 Sender: linux-i2c-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org Mask the IRQ status to only the bits that the driver checks. This prevents excessive driver warnings when operating in slave mode when additional bits are set that the driver doesn't handle. Signed-off-by: Eddie James Reviewed-by: Tao Ren --- drivers/i2c/busses/i2c-aspeed.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c index 31268074c422..724bf30600d6 100644 --- a/drivers/i2c/busses/i2c-aspeed.c +++ b/drivers/i2c/busses/i2c-aspeed.c @@ -69,6 +69,7 @@ * These share bit definitions, so use the same values for the enable & * status bits. */ +#define ASPEED_I2CD_INTR_RECV_MASK 0xf000ffff #define ASPEED_I2CD_INTR_SDA_DL_TIMEOUT BIT(14) #define ASPEED_I2CD_INTR_BUS_RECOVER_DONE BIT(13) #define ASPEED_I2CD_INTR_SLAVE_MATCH BIT(7) @@ -604,6 +605,7 @@ static irqreturn_t aspeed_i2c_bus_irq(int irq, void *dev_id) writel(irq_received & ~ASPEED_I2CD_INTR_RX_DONE, bus->base + ASPEED_I2C_INTR_STS_REG); readl(bus->base + ASPEED_I2C_INTR_STS_REG); + irq_received &= ASPEED_I2CD_INTR_RECV_MASK; irq_remaining = irq_received; #if IS_ENABLED(CONFIG_I2C_SLAVE)