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cpufreq: pcc-cpufreq: Fix doorbell.access_width

Commit 920de6ebfab8 (ACPICA: Hardware: Enhance
acpi_hw_validate_register() with access_width/bit_offset awareness)
apparently exposed a latent bug, doorbell.access_width is initialized
to 64, but per Lv Zheng, it should be 4, and indeed, making that
change does bring pcc-cpufreq back to life.

Fixes: 920de6ebfab8 (ACPICA: Hardware: Enhance acpi_hw_validate_register() with access_width/bit_offset awareness)
Suggested-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Mike Galbraith <umgwanakikbuti@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Mike Galbraith %!s(int64=9) %!d(string=hai) anos
pai
33688abb28
achega
3c67a829bd
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  1. 1 1
      drivers/cpufreq/pcc-cpufreq.c

+ 1 - 1
drivers/cpufreq/pcc-cpufreq.c
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@@ -487,7 +487,7 @@ static int __init pcc_cpufreq_probe(void)
 
 	doorbell.space_id = reg_resource->space_id;
 
 	doorbell.space_id = reg_resource->space_id;
 
 	doorbell.bit_width = reg_resource->bit_width;
 
 	doorbell.bit_width = reg_resource->bit_width;
 
 	doorbell.bit_offset = reg_resource->bit_offset;
 
 	doorbell.bit_offset = reg_resource->bit_offset;
 
-	doorbell.access_width = 64;
 
+	doorbell.access_width = 4;
 
 	doorbell.address = reg_resource->address;
 
 	doorbell.address = reg_resource->address;
 
 
 
 	pr_debug("probe: doorbell: space_id is %d, bit_width is %d, "
 
 	pr_debug("probe: doorbell: space_id is %d, bit_width is %d, "