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@xxxxxx>
---
drivers/nfc/st21nfcb/i2c.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/nfc/st21nfcb/i2c.c b/drivers/nfc/st21nfcb/i2c.c
index 41b5bdb..dbc0dfd 100644
--- a/drivers/nfc/st21nfcb/i2c.c
+++ b/drivers/nfc/st21nfcb/i2c.c
@@ -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);
}
/*
--
2.1.4
--
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