linux-postmarketos-omap: n900: bq27xxx: generate events in changes to status flags (MR 5857)

bq27xxx_battery has a check for status flags in order to detect changes
and report to userspace. However, the cached flags are updated before
checking for changes, hence no flag-related events are ever sent. This
patch fixes this behavior, and has been sent upstream.

[ci:skip-build]: already built successfully in CI

device/community/linux-postmarketos-omap/0010-power-supply-bq27xxx_battery-do-not-update-cached-fl.patch

+From f9c5d5284a554ed3e2f3a60e05d3538e0653a3a7 Mon Sep 17 00:00:00 2001
+From: "Sicelo A. Mhlongo" <absicsz@gmail.com>
+Date: Sun, 27 Oct 2024 21:47:48 +0200
+Subject: [PATCH] power: supply: bq27xxx_battery: do not update cached flags
+ prematurely
+
+Commit 243f8ffc883a1 ("power: supply: bq27xxx_battery: Notify also about
+status changes") intended to notify userspace when the status changes,
+based on the flags register. However, the cached state is updated too
+early, before the flags are tested for any changes. Remove the premature
+update.
+
+Fixes: 243f8ffc883a1 ("power: supply: bq27xxx_battery: Notify also about status changes")
+Signed-off-by: Sicelo A. Mhlongo <absicsz@gmail.com>
+---
+ drivers/power/supply/bq27xxx_battery.c | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c
+index 40c5ac7a1118..b2c65fe43d5c 100644
+--- a/drivers/power/supply/bq27xxx_battery.c
++++ b/drivers/power/supply/bq27xxx_battery.c
+@@ -1913,7 +1913,6 @@ static void bq27xxx_battery_update_unlocked(struct bq27xxx_device_info *di)
+ 		cache.flags = -1; /* read error */
+ 	if (cache.flags >= 0) {
+ 		cache.capacity = bq27xxx_battery_read_soc(di);
+-		di->cache.flags = cache.flags;
+ 
+ 		/*
+ 		 * On gauges with signed current reporting the current must be
+-- 
+2.45.2
+

device/community/linux-postmarketos-omap/APKBUILD

@@ -4,7 +4,7 @@
 
 pkgname=linux-postmarketos-omap
 pkgver=6.12.1
-pkgrel=0
+pkgrel=1
 pkgdesc="Mainline kernel fork for OMAP devices"
 arch="armv7"
 url="https://kernel.org/"
@@ -41,6 +41,7 @@ source="
 	0007-hsi-ssi_port-force-pio-path.patch
 	0008-n900-dts-volume-keys.patch
 	0009-ARM-dts-disable-twl-off-idle-configuration-for-N900.patch
+	0010-power-supply-bq27xxx_battery-do-not-update-cached-fl.patch
 "
 builddir="$srcdir/linux-$_kernver"
 replaces="linux-samsung-espresso3g linux-nokia-n900"
@@ -81,4 +82,5 @@ f7d1a87088c65278a114125e732d5bebebb560a6245afb34e003083d808ef3f8c5f49ff231319535
 c3af9715b3559c2d593f4fcfa078730722c7deeec132c5b83e085ff4d9815d85ef349384097c580efe1bbc37c60f42e18ef559f0abccfe236080670e4403fa77  0007-hsi-ssi_port-force-pio-path.patch
 b98ce806b3d5a0122086e4c9670639174470ff6d29851c60258cc5d699ce9a479dbf4996b24299fc075d25e9fe8f6b1250fafdff742deea0ddeaf53d342a9d72  0008-n900-dts-volume-keys.patch
 66abb5548910ad369608b08200f5835d5a8526c04cc3617221ef546f3e3d22cd944db91dc6727a5c26a102b24d8ef1306ea01254c9c382759afced91b31747ef  0009-ARM-dts-disable-twl-off-idle-configuration-for-N900.patch
+efdf7f4f718faac8b753f8aacb5f845ccab75952c53310fe1f17efb7211d0d300ca7242a0c56dcb033962ca6505341730469645f2e774559eee469211411685f  0010-power-supply-bq27xxx_battery-do-not-update-cached-fl.patch
 "