[patch] cpufreq/pcc-cpufreq: Fix doorbell.access_width

Mike Galbraith
2016-06-23T06:45:50Z

Commit 920de6ebfab8 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.

Suggested-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Mike Galbraith <umgwanakikbuti@gmail.com>
---
drivers/cpufreq/pcc-cpufreq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/cpufreq/pcc-cpufreq.c
+++ b/drivers/cpufreq/pcc-cpufreq.c
@@ -487,7 +487,7 @@ static int __init pcc_cpufreq_probe(void
doorbell.space_id = reg_resource->space_id;
doorbell.bit_width = reg_resource->bit_width;
doorbell.bit_offset = reg_resource->bit_offset;
- doorbell.access_width = 64;
+ doorbell.access_width = 4;
doorbell.address = reg_resource->address;

pr_debug("probe: doorbell: space_id is %d, bit_width is %d, "