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

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On 14/12/2021 14:35, Benjamin Tissoires wrote:
On Fri, Dec 10, 2021 at 6:51 PM Tero Kristo <tero.kristo@xxxxxxxxxxxxxxx> wrote:

On 10/12/2021 18:21, Benjamin Tissoires wrote:

On Fri, Dec 10, 2021 at 12:12 PM Tero Kristo
<tero.kristo@xxxxxxxxxxxxxxx> wrote:
From: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>

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.
Ah I see, do you want me to re-post in this form?
Nah, no need for a repost. I fixed the patch locally and pushed to
for-5.17/core.

Thanks a lot!

-Tero


Cheers,
Benjamin

-Tero

Cheers,
Benjamin

Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Signed-off-by: Tero Kristo <tero.kristo@xxxxxxxxxxxxxxx>
---
  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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