linux-kernel - [PATCH v2] powercap: intel_rapl: Downgrade BIOS locked limits pr_warn() to pr

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Date:   Tue, 24 Oct 2023 22:17:19 +0300
From:   Ville Syrjala <ville.syrjala@...ux.intel.com>
To:     linux-pm@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
        Zhang Rui <rui.zhang@...el.com>,
        Wang Wendy <wendy.wang@...el.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Srinivas Pandruvada <srinivas.pandruvada@...el.com>
Subject: [PATCH v2] powercap: intel_rapl: Downgrade BIOS locked limits pr_warn() to pr_debug()

From: Ville Syrjälä <ville.syrjala@...ux.intel.com>

Before the refactoring the pr_warn() only triggered when
someone explicitly tried to write to a BIOS locked limit.
After the refactoring the warning is also triggering during
system resume. The user can't do anything about this so
printing scary warnings doesn't make sense

Keep the printk but make it pr_debug() instead of pr_warn()
to make it clear it's not a serious issue.

Cc: Zhang Rui <rui.zhang@...el.com>
Cc: Wang Wendy <wendy.wang@...el.com>
Cc: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@...el.com>
Fixes: 9050a9cd5e4c ("powercap: intel_rapl: Cleanup Power Limits support")
Signed-off-by: Ville Syrjälä <ville.syrjala@...ux.intel.com>
---
 drivers/powercap/intel_rapl_common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/powercap/intel_rapl_common.c b/drivers/powercap/intel_rapl_common.c
index 40a2cc649c79..2feed036c1cd 100644
--- a/drivers/powercap/intel_rapl_common.c
+++ b/drivers/powercap/intel_rapl_common.c
@@ -892,7 +892,7 @@ static int rapl_write_pl_data(struct rapl_domain *rd, int pl,
 		return -EINVAL;
 
 	if (rd->rpl[pl].locked) {
-		pr_warn("%s:%s:%s locked by BIOS\n", rd->rp->name, rd->name, pl_names[pl]);
+		pr_debug("%s:%s:%s locked by BIOS\n", rd->rp->name, rd->name, pl_names[pl]);
 		return -EACCES;
 	}
 
-- 
2.41.0