From: Gayatri Kammela <gayatri.kammela@intel.com>
Date: Thu, 12 Dec 2019 10:38:45 -0800
Subject: platform/x86: intel_pmc_core: Make debugfs entry for
pch_ip_power_gating_status conditional
Git-commit: 6268c0b278b57657a1b9919b02625a2b2ae2120b
Patch-mainline: 5.6-rc1
References: jsc#SLE-12700
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>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
drivers/platform/x86/intel_pmc_core.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- 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(stru
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);