Message ID | 20190211164913.5988-3-federico.vaga@cern.ch |
---|---|
State | Superseded |
Headers | show
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Mon, 11 Feb 2019 17:49:24 +0100 From: Federico Vaga <federico.vaga@cern.ch> To: Peter Korsgaard <peter@korsgaard.com>, Andrew Lunn <andrew@lunn.ch> CC: Peter Rosin <peda@axentia.se>, <linux-i2c@vger.kernel.org>, <linux-kernel@vger.kernel.org>, Federico Vaga <federico.vaga@cern.ch> Subject: [PATCH v6 2/5] i2c: ocores: do not handle IRQ if IF is not set Date: Mon, 11 Feb 2019 17:49:10 +0100 Message-ID: <20190211164913.5988-3-federico.vaga@cern.ch> X-Mailer: git-send-email 2.15.0 In-Reply-To: <20190211164913.5988-1-federico.vaga@cern.ch> References: <20190211164913.5988-1-federico.vaga@cern.ch> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [188.185.69.206] X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:188.184.36.50; IPV:NLI; CTRY:CH; EFV:NLI; SFV:NSPM; SFS:(10009020)(136003)(376002)(39860400002)(396003)(346002)(2980300002)(199004)(189003)(53416004)(48376002)(50466002)(66066001)(54906003)(51416003)(76176011)(4326008)(786003)(106002)(16586007)(110136005)(316002)(107886003)(106466001)(47776003)(7696005)(1076003)(8936002)(8676002)(305945005)(246002)(7636002)(7736002)(50226002)(86362001)(956004)(6116002)(3846002)(36756003)(11346002)(126002)(426003)(446003)(26005)(478600001)(336012)(2906002)(2616005)(6666004)(356004)(476003)(16526019)(186003)(44832011)(74482002)(486006); 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Series |
i2c: ocores: improvements
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expand
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diff --git a/drivers/i2c/busses/i2c-ocores.c b/drivers/i2c/busses/i2c-ocores.c index aa85202..fcc2558 100644 --- a/drivers/i2c/busses/i2c-ocores.c +++ b/drivers/i2c/busses/i2c-ocores.c @@ -143,10 +143,9 @@ static inline u8 oc_getreg(struct ocores_i2c *i2c, int reg) return i2c->getreg(i2c, reg); } -static void ocores_process(struct ocores_i2c *i2c) +static void ocores_process(struct ocores_i2c *i2c, u8 stat) { struct i2c_msg *msg = i2c->msg; - u8 stat = oc_getreg(i2c, OCI2C_STATUS); unsigned long flags; /* @@ -223,8 +222,12 @@ out: static irqreturn_t ocores_isr(int irq, void *dev_id) { struct ocores_i2c *i2c = dev_id; + u8 stat = oc_getreg(i2c, OCI2C_STATUS); + + if (!(stat & OCI2C_STAT_IF)) + return IRQ_NONE; - ocores_process(i2c); + ocores_process(i2c, stat); return IRQ_HANDLED; }