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NFC: st21nfcb: disable irq when st21nfcb is disabled 

When st21nfcb is disabled, the irq line may remain active
while no data are available, flooding the system with
irrelevant i2c transaction.

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 2015-06-06 13:16:51 +02:00 committed by Samuel Ortiz
parent 183fe2d06d
commit 05f0939f76
1 changed files with 4 additions and 4 deletions
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8
drivers/nfc/st21nfcb/i2c.c
View File

@ -70,6 +70,9 @@ static int st21nfcb_nci_i2c_enable(void *phy_id)
gpio_set_value(phy->gpio_reset, 1);
usleep_range(80000, 85000);
if (phy->ndlc->powered == 0)
enable_irq(phy->i2c_dev->irq);
return 0;
}
@ -77,10 +80,7 @@ static void st21nfcb_nci_i2c_disable(void *phy_id)
{
struct st21nfcb_i2c_phy *phy = phy_id;
/* reset chip in order to flush clf */
gpio_set_value(phy->gpio_reset, 0);
usleep_range(10000, 15000);
gpio_set_value(phy->gpio_reset, 1);
disable_irq_nosync(phy->i2c_dev->irq);
}
/*