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SubjectRe: [PATCHv4 2/5] HID: hid-input: Add suffix also for HID_DG_PEN


On Fri, Dec 10, 2021 at 12:12 PM Tero Kristo <tero.kristo@linux.intel.com> wrote:
>
> From: Mika Westerberg <mika.westerberg@linux.intel.com>
>
> This and HID_DG_STYLUS are pretty much the same thing so add suffix for
> HID_DG_PEN too. This makes the input device name look better.
>
> While doing this, remove the suffix override from hid-multitouch, as it
> is now handled by hid-input. Also, the suffix override done by
> hid-multitouch was wrong, as it mapped HID_DG_PEN => "Stylus" and
> HID_DG_STYLUS => "Pen".

FWIW, I was thinking at the following:
---
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 837585f4e673..fe0da7bf24a9 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -1775,6 +1775,15 @@ static struct hid_input *hidinput_allocate(struct hid_device *hid,
suffix = "Mouse";
break;
case HID_DG_PEN:
+ /*
+ * yes, there is an issue here:
+ * DG_PEN -> "Stylus"
+ * DG_STYLUS -> "Pen"
+ * But changing this now means users with config snippets
+ * will have to change it and the test suite will not be happy.
+ */
+ suffix = "Stylus";
+ break;
case HID_DG_STYLUS:
suffix = "Pen";
break;
---
Because the current patch breaks the test suite.

Cheers,
Benjamin

>
> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
> Signed-off-by: Tero Kristo <tero.kristo@linux.intel.com>
> ---
> drivers/hid/hid-input.c | 1 +
> drivers/hid/hid-multitouch.c | 3 ---
> 2 files changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
> index ad718ceb8af3..78205e445652 100644
> --- a/drivers/hid/hid-input.c
> +++ b/drivers/hid/hid-input.c
> @@ -1741,6 +1741,7 @@ static struct hid_input *hidinput_allocate(struct hid_device *hid,
> case HID_GD_MOUSE:
> suffix = "Mouse";
> break;
> + case HID_DG_PEN:
> case HID_DG_STYLUS:
> suffix = "Pen";
> break;
> diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
> index 082376a6cb3d..99eabfb4145b 100644
> --- a/drivers/hid/hid-multitouch.c
> +++ b/drivers/hid/hid-multitouch.c
> @@ -1606,9 +1606,6 @@ static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
> case HID_DG_STYLUS:
> /* force BTN_STYLUS to allow tablet matching in udev */
> __set_bit(BTN_STYLUS, hi->input->keybit);
> - fallthrough;
> - case HID_DG_PEN:
> - suffix = "Stylus";
> break;
> default:
> suffix = "UNKNOWN";
> --
> 2.25.1
>

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