sony-laptop: Avoid oops on module unload for older laptops
Older VAIO laptops without the SN00 ACPI method will have the "handles" variable unset. Return early from sony_nc_function_cleanup when "handles" is null. Signed-off-by: Lawrence Yiu <lawyiu.dev@gmail.com> Acked-by: Mattia Dongili <malattia@linux.it> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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@ -1446,6 +1446,9 @@ static void sony_nc_function_cleanup(struct platform_device *pd)
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{
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unsigned int i, result, bitmask, handle;
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if (!handles)
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return;
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/* get enabled events and disable them */
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sony_nc_int_call(sony_nc_acpi_handle, "SN01", NULL, &bitmask);
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sony_nc_int_call(sony_nc_acpi_handle, "SN03", &bitmask, &result);
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