Bitwise AND was intended instead of OR.  With the current code the
condition is always true.

Fixes: cbdd16b818ee ("HID: i2c-hid: Make elan touch controllers power on after panel is enabled")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
 drivers/hid/i2c-hid/i2c-hid-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c
index 99ce6386176c..30ebde1273be 100644
--- a/drivers/hid/i2c-hid/i2c-hid-core.c
+++ b/drivers/hid/i2c-hid/i2c-hid-core.c
@@ -1189,7 +1189,7 @@ static int i2c_hid_core_register_panel_follower(struct i2c_hid *ihid)
 	struct device *dev = &ihid->client->dev;
 	int ret;
 
-	if (ihid->hid->initial_quirks | HID_QUIRK_POWER_ON_AFTER_BACKLIGHT)
+	if (ihid->hid->initial_quirks & HID_QUIRK_POWER_ON_AFTER_BACKLIGHT)
 		ihid->panel_follower.funcs = &i2c_hid_core_panel_follower_enable_funcs;
 	else
 		ihid->panel_follower.funcs = &i2c_hid_core_panel_follower_prepare_funcs;
-- 
2.47.2

Hi,

On Wed, Aug 27, 2025 at 5:57 AM Dan Carpenter <dan.carpenter@linaro.org> wrote:
>
> Bitwise AND was intended instead of OR.  With the current code the
> condition is always true.
>
> Fixes: cbdd16b818ee ("HID: i2c-hid: Make elan touch controllers power on after panel is enabled")
> Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
> ---
>  drivers/hid/i2c-hid/i2c-hid-core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Douglas Anderson <dianders@chromium.org

Jiri / Benjamin: if one of you can give this a quick Ack then I'll
throw it into drm-misc-next with the patch it's fixing.

-Doug

On Wed, 27 Aug 2025, Doug Anderson wrote:

> > Bitwise AND was intended instead of OR.  With the current code the
> > condition is always true.
> >
> > Fixes: cbdd16b818ee ("HID: i2c-hid: Make elan touch controllers power on after panel is enabled")
> > Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
> > ---
> >  drivers/hid/i2c-hid/i2c-hid-core.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> Reviewed-by: Douglas Anderson <dianders@chromium.org

This seems to be missing closing bracket :)

> Jiri / Benjamin: if one of you can give this a quick Ack then I'll
> throw it into drm-misc-next with the patch it's fixing.

Acked-by: Jiri Kosina <jkosina@suse.com>

Thanks!

-- 
Jiri Kosina
SUSE Labs

Hi,

On Wed, Aug 27, 2025 at 8:39 AM Jiri Kosina <jikos@kernel.org> wrote:
>
> On Wed, 27 Aug 2025, Doug Anderson wrote:
>
> > > Bitwise AND was intended instead of OR.  With the current code the
> > > condition is always true.
> > >
> > > Fixes: cbdd16b818ee ("HID: i2c-hid: Make elan touch controllers power on after panel is enabled")
> > > Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
> > > ---
> > >  drivers/hid/i2c-hid/i2c-hid-core.c | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > Reviewed-by: Douglas Anderson <dianders@chromium.org
>
> This seems to be missing closing bracket :)

Fixed. The tools would probably have caught it, but better to be safe.
...actually, "b4" fixed it for me. :-P

> > Jiri / Benjamin: if one of you can give this a quick Ack then I'll
> > throw it into drm-misc-next with the patch it's fixing.
>
> Acked-by: Jiri Kosina <jkosina@suse.com>

Pushed to drm-misc-next.

[1/1] HID: i2c-hid: Fix test in i2c_hid_core_register_panel_follower()
      commit: 5c76c794bf29399394ebacaa5af8436b8bed0d46

Hi Dan,

On Wed, Aug 27, 2025 at 8:57 PM Dan Carpenter <dan.carpenter@linaro.org> wrote:
>
> Bitwise AND was intended instead of OR.  With the current code the
> condition is always true.
>
> Fixes: cbdd16b818ee ("HID: i2c-hid: Make elan touch controllers power on after panel is enabled")
> Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
> ---
>  drivers/hid/i2c-hid/i2c-hid-core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c
> index 99ce6386176c..30ebde1273be 100644
> --- a/drivers/hid/i2c-hid/i2c-hid-core.c
> +++ b/drivers/hid/i2c-hid/i2c-hid-core.c
> @@ -1189,7 +1189,7 @@ static int i2c_hid_core_register_panel_follower(struct i2c_hid *ihid)
>         struct device *dev = &ihid->client->dev;
>         int ret;
>
> -       if (ihid->hid->initial_quirks | HID_QUIRK_POWER_ON_AFTER_BACKLIGHT)
> +       if (ihid->hid->initial_quirks & HID_QUIRK_POWER_ON_AFTER_BACKLIGHT)
>                 ihid->panel_follower.funcs = &i2c_hid_core_panel_follower_enable_funcs;
>         else
>                 ihid->panel_follower.funcs = &i2c_hid_core_panel_follower_prepare_funcs;
> --
> 2.47.2
>

Reviewed-by:  Pin-yen Lin <treapking@chromium.org>

Thanks for catching this!

Regards,
Pin-yen