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mfd: 88pm80x: Double shifting bug in suspend/resume

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commit 9a6dc64451 upstream.

set_bit() and clear_bit() take the bit number so this code is really
doing "1 << (1 << irq)" which is a double shift bug.  It's done
consistently so it won't cause a problem unless "irq" is more than 4.

Fixes: 70c6cce040 ('mfd: Support 88pm80x in 80x driver')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter
2016-08-04 08:26:56 +03:00
committed by Greg Kroah-Hartman
parent 5303b53ef3
commit 0114e3e527
1 changed files with 2 additions and 2 deletions
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4
include/linux/mfd/88pm80x.h
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@@ -350,7 +350,7 @@ static inline int pm80x_dev_suspend(struct device *dev)
int irq = platform_get_irq(pdev, 0);
if (device_may_wakeup(dev))
set_bit((1 << irq), &chip->wu_flag);
set_bit(irq, &chip->wu_flag);
return 0;
}
@@ -362,7 +362,7 @@ static inline int pm80x_dev_resume(struct device *dev)
int irq = platform_get_irq(pdev, 0);
if (device_may_wakeup(dev))
clear_bit((1 << irq), &chip->wu_flag);
clear_bit(irq, &chip->wu_flag);
return 0;
}