linux-kernel - [PATCH v2 13/21] firmware: xilinx: Use of_genpd_sync

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250523134025.75130-14-ulf.hansson@linaro.org>
Date: Fri, 23 May 2025 15:40:10 +0200
From: Ulf Hansson <ulf.hansson@...aro.org>
To: Saravana Kannan <saravanak@...gle.com>,
	Stephen Boyd <sboyd@...nel.org>,
	linux-pm@...r.kernel.org
Cc: "Rafael J . Wysocki" <rafael@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Michael Grzeschik <m.grzeschik@...gutronix.de>,
	Bjorn Andersson <andersson@...nel.org>,
	Abel Vesa <abel.vesa@...aro.org>,
	Peng Fan <peng.fan@....nxp.com>,
	Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
	Johan Hovold <johan@...nel.org>,
	Maulik Shah <maulik.shah@....qualcomm.com>,
	Michal Simek <michal.simek@....com>,
	Konrad Dybcio <konradybcio@...nel.org>,
	Thierry Reding <thierry.reding@...il.com>,
	Jonathan Hunter <jonathanh@...dia.com>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 13/21] firmware: xilinx: Use of_genpd_sync_state()

To make sure genpd tries to power off unused PM domains, let's call
of_genpd_sync_state() from our own ->sync_state() callback.

Cc: Michal Simek <michal.simek@....com>
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
---
 drivers/firmware/xilinx/zynqmp.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 87ddbb7d11c2..02da3e48bc8f 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -20,6 +20,7 @@
 #include <linux/of.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
+#include <linux/pm_domain.h>
 #include <linux/slab.h>
 #include <linux/uaccess.h>
 #include <linux/hashtable.h>
@@ -2101,9 +2102,13 @@ static void zynqmp_firmware_remove(struct platform_device *pdev)
 
 static void zynqmp_firmware_sync_state(struct device *dev)
 {
-	if (!of_device_is_compatible(dev->of_node, "xlnx,zynqmp-firmware"))
+	struct device_node *np = dev->of_node;
+
+	if (!of_device_is_compatible(np, "xlnx,zynqmp-firmware"))
 		return;
 
+	of_genpd_sync_state(np);
+
 	if (zynqmp_pm_init_finalize())
 		dev_warn(dev, "failed to release power management to firmware\n");
 }
-- 
2.43.0