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| author | Hans de Goede <hdegoede@redhat.com> | 2022-02-28 22:57:26 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2022-02-28 23:26:25 -0800 |
| commit | 3f9ed5c2fe36794c1b11697bbbc6c8ec82a7d3dc (patch) | |
| tree | 9d6c6d9bcb6833b1a948766695d55f5e76a1f713 /drivers/input/input.c | |
| parent | 986c6f7c3fc855032f3457a5a1b7fbcc09c375bb (diff) | |
| download | linux-3f9ed5c2fe36794c1b11697bbbc6c8ec82a7d3dc.tar.gz | |
Input: set EV_ABS in dev->evbit even if input_alloc_absinfo() fails
The input core's error handling for input_alloc_absinfo() failures
is based on ignoring the error until input_register_device() runs
and then checks for the failure like this:
if (test_bit(EV_ABS, dev->evbit) && !dev->absinfo) {
dev_err(&dev->dev, ...);
return -EINVAL;
}
This relies on EV_ABS actually getting set in dev->evbit even
if input_alloc_absinfo() fails, change input_set_abs_params() and
input_set_capability() to actually adhere to this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220131143539.109142-1-hdegoede@redhat.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/input.c')
| -rw-r--r-- | drivers/input/input.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c index ccaeb24263854d..3a5156012fb850 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -511,6 +511,9 @@ void input_set_abs_params(struct input_dev *dev, unsigned int axis, { struct input_absinfo *absinfo; + __set_bit(EV_ABS, dev->evbit); + __set_bit(axis, dev->absbit); + input_alloc_absinfo(dev); if (!dev->absinfo) return; @@ -520,9 +523,6 @@ void input_set_abs_params(struct input_dev *dev, unsigned int axis, absinfo->maximum = max; absinfo->fuzz = fuzz; absinfo->flat = flat; - - __set_bit(EV_ABS, dev->evbit); - __set_bit(axis, dev->absbit); } EXPORT_SYMBOL(input_set_abs_params); @@ -2085,9 +2085,6 @@ void input_set_capability(struct input_dev *dev, unsigned int type, unsigned int case EV_ABS: input_alloc_absinfo(dev); - if (!dev->absinfo) - return; - __set_bit(code, dev->absbit); break; |