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ACPI battery driver loading failed..

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Hi All,

Kernel acpi battery driver loading fails eventhouh I have FW entry for PNP0C0A. but I see acpi ac driver is getting loaded without any issue.

One thing I observed is FW doesn't implement the _CSR method which is being implemented by most of PNP devices.

I have enabled the following driver in kernel config.

CONFIG_ACPI=y
CONFIG_ACPI_SLEEP=y
# CONFIG_ACPI_PROCFS is not set
CONFIG_ACPI_PROCFS_POWER=y
# CONFIG_ACPI_EC_DEBUGFS is not set
CONFIG_ACPI_PROC_EVENT=y
CONFIG_ACPI_AC=y
CONFIG_ACPI_BATTERY=y
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_VIDEO=y
CONFIG_ACPI_FAN=y

CONFIG_PNPACPI=y

Also does acpi battery depends on BIOS for loading?

Thanks,
Ram
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