6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
commit bf9d5cb588755ee41ac12a8976dccf44ae18281b upstream.
The driver returns -ENODEV when the firmware battmrg service hasn't
started yet, while per-se -ENODEV is fine, we usually use -EAGAIN to
tell the user to retry again later. And the power supply core uses
-EGAIN when the device isn't initialized, let's use the same return.
This notably causes an infinite spam of:
thermal thermal_zoneXX: failed to read out thermal zone (-19)
because the thermal core doesn't understand -ENODEV, but only
considers -EAGAIN as a non-fatal error.
While it didn't appear until now, commit [1] fixes thermal core
and no more ignores thermal zones returning an error at first
temperature update.
[1] 5725f40698b9 ("thermal: core: Call monitor_thermal_zone() if zone temperature is invalid")
Link: https://lore.kernel.org/all/2ed4c630-204a-4f80-a37f-f2ca838eb455@xxxxxxxxxx/
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 29e8142b5623 ("power: supply: Introduce Qualcomm PMIC GLINK power supply")
Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Tested-by: Stephan Gerhold <stephan.gerhold@xxxxxxxxxx>
Reviewed-by: Stephan Gerhold <stephan.gerhold@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240715-topic-sm8x50-upstream-fix-battmgr-temp-tz-warn-v1-1-16e842ccead7@xxxxxxxxxx
Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/power/supply/qcom_battmgr.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/power/supply/qcom_battmgr.c
+++ b/drivers/power/supply/qcom_battmgr.c
@@ -486,7 +486,7 @@ static int qcom_battmgr_bat_get_property
int ret;
if (!battmgr->service_up)
- return -ENODEV;
+ return -EAGAIN;
if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);
@@ -683,7 +683,7 @@ static int qcom_battmgr_ac_get_property(
int ret;
if (!battmgr->service_up)
- return -ENODEV;
+ return -EAGAIN;
ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);
if (ret)
@@ -748,7 +748,7 @@ static int qcom_battmgr_usb_get_property
int ret;
if (!battmgr->service_up)
- return -ENODEV;
+ return -EAGAIN;
if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);
@@ -867,7 +867,7 @@ static int qcom_battmgr_wls_get_property
int ret;
if (!battmgr->service_up)
- return -ENODEV;
+ return -EAGAIN;
if (battmgr->variant == QCOM_BATTMGR_SC8280XP)
ret = qcom_battmgr_bat_sc8280xp_update(battmgr, psp);
