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

mfd: max8997: Disable interrupt handling for suspend/resume cycle 

Disable IRQs during suspend/resume cycle to ensure handling of wakeup
interrupts (i.e. RTC wake alarm) after max8997_resume(). This way it can
be properly handled when I2C bus is finally available. This pattern is
also used in other MAX PMIC MFD drivers.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Marek Szyprowski 2018-09-05 16:36:06 +02:00 committed by Lee Jones
parent efddff27c8
commit c1aaaa1cb7
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/mfd/max8997.c
View File

@ -448,6 +448,7 @@ static int max8997_suspend(struct device *dev)
struct i2c_client *i2c = to_i2c_client(dev); struct i2c_client *i2c = to_i2c_client(dev);
struct max8997_dev *max8997 = i2c_get_clientdata(i2c); struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
disable_irq(max8997->irq);
if (device_may_wakeup(dev)) if (device_may_wakeup(dev))
irq_set_irq_wake(max8997->irq, 1); irq_set_irq_wake(max8997->irq, 1);
return 0; return 0;
@ -460,6 +461,7 @@ static int max8997_resume(struct device *dev)
if (device_may_wakeup(dev)) if (device_may_wakeup(dev))
irq_set_irq_wake(max8997->irq, 0); irq_set_irq_wake(max8997->irq, 0);
enable_irq(max8997->irq);
return max8997_irq_resume(max8997); return max8997_irq_resume(max8997);
} }