linux-kernel - [PATCH] HID: hid-input: fix stylus battery reporting

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Message-ID: <20200925233552.GA4022480@dtor-ws>
Date:   Fri, 25 Sep 2020 16:35:52 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc:     Kenneth Albanowski <kenalba@...gle.com>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] HID: hid-input: fix stylus battery reporting

With commit 4f3882177240 hid-input started clearing of "ignored" usages
to avoid using garbage that might have been left in them. However
"battery strength" usages should not be ignored, as we do want to
use them.

Fixes: 4f3882177240 ("HID: hid-input: clear unmapped usages")
Reported-by: Kenneth Albanowski <kenalba@...gle.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---

Kenneth, can you please try this one and see if it fixes your issue?

 drivers/hid/hid-input.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index dea9cc65bf80..5da631d2ec9b 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -797,7 +797,7 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 		case 0x3b: /* Battery Strength */
 			hidinput_setup_battery(device, HID_INPUT_REPORT, field);
 			usage->type = EV_PWR;
-			goto ignore;
+			return;
 
 		case 0x3c: /* Invert */
 			map_key_clear(BTN_TOOL_RUBBER);
@@ -1059,7 +1059,7 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
 		case HID_DC_BATTERYSTRENGTH:
 			hidinput_setup_battery(device, HID_INPUT_REPORT, field);
 			usage->type = EV_PWR;
-			goto ignore;
+			return;
 		}
 		goto unknown;
 
-- 
2.28.0.681.g6f77f65b4e-goog


-- 
Dmitry