linux-kernel - [PATCH v2] firmware/psci: demote suspend-mode warning to info level

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Date:   Wed, 26 Oct 2022 15:54:45 +0200
From:   Johan Hovold <johan+linaro@...nel.org>
To:     Mark Rutland <mark.rutland@....com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>
Cc:     Ulf Hansson <ulf.hansson@...aro.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sudeep Holla <sudeep.holla@....com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH v2] firmware/psci: demote suspend-mode warning to info level

On some Qualcomm platforms, like SC8280XP, the attempt to set PC mode
during boot fails with PSCI_RET_DENIED and since commit 998fcd001feb
("firmware/psci: Print a warning if PSCI doesn't accept PC mode") this
is now logged at warning level:

	psci: failed to set PC mode: -3

As there is nothing users can do about the firmware behaving this way,
demote the warning to info level and clearly mark it as a firmware bug:

	psci: [Firmware Bug]: failed to set PC mode: -3

Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 drivers/firmware/psci/psci.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
index e7bcfca4159f..f8fa32f0a130 100644
--- a/drivers/firmware/psci/psci.c
+++ b/drivers/firmware/psci/psci.c
@@ -165,7 +165,8 @@ int psci_set_osi_mode(bool enable)
 
 	err = invoke_psci_fn(PSCI_1_0_FN_SET_SUSPEND_MODE, suspend_mode, 0, 0);
 	if (err < 0)
-		pr_warn("failed to set %s mode: %d\n", enable ? "OSI" : "PC", err);
+		pr_info(FW_BUG "failed to set %s mode: %d\n",
+				enable ? "OSI" : "PC", err);
 	return psci_to_linux_errno(err);
 }
 
-- 
2.37.3