https://bugzilla.kernel.org/show_bug.cgi?id=90161
Bug ID: 90161
Summary: Can't register new acpi battery -> No battery life on
laptop
Product: ACPI
Version: 2.5
Kernel Version: v3.19-rc1
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: low
Priority: P1
Component: Power-Battery
Assignee: [email protected]
Reporter: [email protected]
Regression: No
Hi,
I am running kernel 3.19-rc1 on a "Mircosoft surface 3" .However recent (23
Nov) changes made in the file 'drivers/acpi/battery.c' in the commit
40e7fcb19293cbdff02c74cb0668413480f82ea1 will prevent the battery of my laptop
to be registered. the result in that the Battery driver will deferring the
Probing of the device forever.
Removing the 2 commited lines (1181) fixes the issues in my case and the
battery shows up in '/sys/class/power_supply/BAT0'.
Regards
--
**dmesg: Warning message before patch below :
[ 8551.693540] acpi PNP0C0A:00: Driver battery requests probe deferral
**dmesg: After the patch only one message is displayed about the battery :
[ 0.600055] ACPI: Battery Slot [BAT0] (battery present)
Specific patch reverting the commit:
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index d98ba43..4983b98 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -1181,9 +1181,6 @@ static int acpi_battery_add(struct acpi_device *device)
if (!device)
return -EINVAL;
- if (device->dep_unmet)
- return -EPROBE_DEFER;
-
battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL);
if (!battery)
return -ENOMEM;
diff --git a/scripts/depmod.sh b/scripts/depmod.sh
index 122599b..9535d73 100755
--- a/scripts/depmod.sh
+++ b/scripts/depmod.sh
@@ -1,4 +1,5 @@
#!/bin/sh
+exit 0
#
# A depmod wrapper used by the toplevel Makefile
--
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