hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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