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NFC: st-nci: Disable irq when powering the device up

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Upon some conditions (timing, CLF errors, platform errors...), the
irq might be already active when powering the device.

Add irq_active variable as a guard to avoid kernel warning message

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Christophe Ricard 2015-10-25 22:54:48 +01:00 committed by Samuel Ortiz
parent a9e062d059
commit bb2496c3ec
2 changed files with 14 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/nfc/st-nci/i2c.c
View file

@ -50,6 +50,8 @@ struct st_nci_i2c_phy {
struct i2c_client *i2c_dev;
struct llt_ndlc *ndlc;
bool irq_active;
unsigned int gpio_reset;
unsigned int irq_polarity;
@ -72,8 +74,10 @@ static int st_nci_i2c_enable(void *phy_id)
gpio_set_value(phy->gpio_reset, 1);
usleep_range(80000, 85000);
if (phy->ndlc->powered == 0)
if (phy->ndlc->powered == 0 && phy->irq_active == 0) {
enable_irq(phy->i2c_dev->irq);
phy->irq_active = true;
}
return 0;
}
@ -83,6 +87,7 @@ static void st_nci_i2c_disable(void *phy_id)
struct st_nci_i2c_phy *phy = phy_id;
disable_irq_nosync(phy->i2c_dev->irq);
phy->irq_active = false;
}
/*
@ -342,6 +347,7 @@ static int st_nci_i2c_probe(struct i2c_client *client,
return r;
}
phy->irq_active = true;
r = devm_request_threaded_irq(&client->dev, client->irq, NULL,
st_nci_irq_thread_fn,
phy->irq_polarity | IRQF_ONESHOT,

8
drivers/nfc/st-nci/spi.c
View file

@ -51,6 +51,8 @@ struct st_nci_spi_phy {
struct spi_device *spi_dev;
struct llt_ndlc *ndlc;
bool irq_active;
unsigned int gpio_reset;
unsigned int irq_polarity;
@ -73,8 +75,10 @@ static int st_nci_spi_enable(void *phy_id)
gpio_set_value(phy->gpio_reset, 1);
usleep_range(80000, 85000);
if (phy->ndlc->powered == 0)
if (phy->ndlc->powered == 0 && phy->irq_active == 0) {
enable_irq(phy->spi_dev->irq);
phy->irq_active = true;
}
return 0;
}
@ -84,6 +88,7 @@ static void st_nci_spi_disable(void *phy_id)
struct st_nci_spi_phy *phy = phy_id;
disable_irq_nosync(phy->spi_dev->irq);
phy->irq_active = false;
}
/*
@ -358,6 +363,7 @@ static int st_nci_spi_probe(struct spi_device *dev)
return r;
}
phy->irq_active = true;
r = devm_request_threaded_irq(&dev->dev, dev->irq, NULL,
st_nci_irq_thread_fn,
phy->irq_polarity | IRQF_ONESHOT,