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| author |   Florian Vaussard <florian.vaussard@gmail.com> | 2016-11-29 17:39:25 -0800 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2016-11-30 09:03:45 -0800 |
| commit | 6473bbfd7e85a9f834ed668b4daa31638c73ff53 (patch) | |
| tree | fc093d6d252c937e551285ab2d193c0aec40c357 /drivers/input/misc/drv2667.c | |
| parent | Input: drv2665 - fix misuse of regmap_update_bits (diff) | |
| download | linux-dev-6473bbfd7e85a9f834ed668b4daa31638c73ff53.tar.xz linux-dev-6473bbfd7e85a9f834ed668b4daa31638c73ff53.zip | |
Input: drv2667 - fix misuse of regmap_update_bits
Using regmap_update_bits(..., mask, 1) with 'mask' following (1 << k)
and k greater than 0 is wrong. Indeed, _regmap_update_bits will perform
(mask & 1), which results in 0 if LSB of mask is 0. Thus the call
regmap_update_bits(..., mask, 1) is in reality equivalent to
regmap_update_bits(..., mask, 0).
In such a case, the correct use is regmap_update_bits(..., mask, mask).
This driver is performing such a mistake with the DRV2667_STANDBY mask,
which equals (1 << 6). Fix the driver to make it consistent with the
API, and fix the alignment problem at the same time. Please note that
this change is untested, as I do not have this piece of hardware.
Testers are welcome!
Signed-off-by: Florian Vaussard <florian.vaussard@heig-vd.ch>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/misc/drv2667.c')
| -rw-r--r-- | drivers/input/misc/drv2667.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/input/misc/drv2667.c b/drivers/input/misc/drv2667.c index d5ba7481328c..2849bb6906a8 100644 --- a/drivers/input/misc/drv2667.c +++ b/drivers/input/misc/drv2667.c @@ -256,7 +256,7 @@ static void drv2667_close(struct input_dev *input) cancel_work_sync(&haptics->work); error = regmap_update_bits(haptics->regmap, DRV2667_CTRL_2, - DRV2667_STANDBY, 1); + DRV2667_STANDBY, DRV2667_STANDBY); if (error) dev_err(&haptics->client->dev, "Failed to enter standby mode: %d\n", error); @@ -415,7 +415,7 @@ static int __maybe_unused drv2667_suspend(struct device *dev) if (haptics->input_dev->users) { ret = regmap_update_bits(haptics->regmap, DRV2667_CTRL_2, - DRV2667_STANDBY, 1); + DRV2667_STANDBY, DRV2667_STANDBY); if (ret) { dev_err(dev, "Failed to set standby mode\n"); regulator_disable(haptics->regulator); |