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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2016-08-04 08:26:56 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-16 17:50:37 +0200 |
| commit | 21c02f8700f525e375c2ba21fbfc41c14953f9e5 (patch) | |
| tree | 4c5178a360a084d36c3849fe323450cc07e7f5a1 | |
| parent | db910738959cd6b4f9ded396fa0b96d78d2941ab (diff) | |
| download | lwn-21c02f8700f525e375c2ba21fbfc41c14953f9e5.tar.gz lwn-21c02f8700f525e375c2ba21fbfc41c14953f9e5.zip | |
mfd: 88pm80x: Double shifting bug in suspend/resume
commit 9a6dc644512fd083400a96ac4a035ac154fe6b8d 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: 70c6cce04066 ('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>
| -rw-r--r-- | include/linux/mfd/88pm80x.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/mfd/88pm80x.h b/include/linux/mfd/88pm80x.h index d409ceb2231e..c118a7ec94d6 100644 --- a/include/linux/mfd/88pm80x.h +++ b/include/linux/mfd/88pm80x.h @@ -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; } |