platform/x86: intel_pmc_core: Make debugfs entry for pch_ip_power_gating_status condi...

Check if the platform supports and only then add a debugfs entry for PCH
IP power gating status.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srinivas Pandruvada <srinivas.pandruvada@intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: David E. Box <david.e.box@intel.com>
Cc: Rajneesh Bhardwaj <irenic.rajneesh@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

diff --git a/drivers/platform/x86/intel_pmc_core.c b/drivers/platform/x86/intel_pmc_core.c
index f8f8861..eb22c2f 100644 (file)
--- a/drivers/platform/x86/intel_pmc_core.c
+++ b/drivers/platform/x86/intel_pmc_core.c
@@ -789,8 +789,9 @@ static void pmc_core_dbgfs_register(struct pmc_dev *pmcdev)
        debugfs_create_file("slp_s0_residency_usec", 0444, dir, pmcdev,
                            &pmc_core_dev_state);
 
-       debugfs_create_file("pch_ip_power_gating_status", 0444, dir, pmcdev,
-                           &pmc_core_ppfear_fops);
+       if (pmcdev->map->pfear_sts)
+               debugfs_create_file("pch_ip_power_gating_status", 0444, dir,
+                                   pmcdev, &pmc_core_ppfear_fops);
 
        debugfs_create_file("ltr_ignore", 0644, dir, pmcdev,
                            &pmc_core_ltr_ignore_ops);