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From:   Sonny Sasaka <sonnysasaka@chromium.org>
To:     linux-bluetooth@vger.kernel.org
Cc:     Sonny Sasaka <sonnysasaka@chromium.org>
Subject: [PATCH BlueZ] profiles/battery: Always update initial battery value
Date:   Tue, 30 Mar 2021 10:09:24 -0700
Message-Id: <20210330170924.16983-1-sonnysasaka@chromium.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Due to cache in gatt db, bluetoothd fails to update publish the battery
value after reconnection when the battery value does not change compared
to before reconnection. For initial battery value, we should update the
value to D-Bus regardless of the cache value.

---
 profiles/battery/battery.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/profiles/battery/battery.c b/profiles/battery/battery.c
index 81f849d57..0f8d6ef18 100644
--- a/profiles/battery/battery.c
+++ b/profiles/battery/battery.c
@@ -88,12 +88,13 @@ static void batt_reset(struct batt *batt)
 }
 
 static void parse_battery_level(struct batt *batt,
-				const uint8_t *value)
+				const uint8_t *value,
+				bool force_update)
 {
 	uint8_t percentage;
 
 	percentage = value[0];
-	if (batt->percentage != percentage) {
+	if (force_update || batt->percentage != percentage) {
 		batt->percentage = percentage;
 		DBG("Battery Level updated: %d%%", percentage);
 		if (!batt->battery) {
@@ -110,7 +111,7 @@ static void batt_io_value_cb(uint16_t value_handle, const uint8_t *value,
 	struct batt *batt = user_data;
 
 	if (value_handle == batt->batt_level_io_handle) {
-		parse_battery_level(batt, value);
+		parse_battery_level(batt, value, false /* force_update */);
 	} else {
 		g_assert_not_reached();
 	}
@@ -134,7 +135,7 @@ static void batt_io_ccc_written_cb(uint16_t att_ecode, void *user_data)
 		return;
 	}
 
-	parse_battery_level(batt, batt->initial_value);
+	parse_battery_level(batt, batt->initial_value, true /* force_update */);
 	g_free (batt->initial_value);
 	batt->initial_value = NULL;
 
-- 
2.29.2