linux-kernel - [PATCH 1/4] firmware: ti_sci: Use devm_register_restart

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Message-ID: <20240326223730.54639-2-afd@ti.com>
Date: Tue, 26 Mar 2024 17:37:27 -0500
From: Andrew Davis <afd@...com>
To: Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Santosh Shilimkar <ssantosh@...nel.org>, Nishanth Menon <nm@...com>,
        Vignesh
 Raghavendra <vigneshr@...com>
CC: <devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, Andrew Davis <afd@...com>
Subject: [PATCH 1/4] firmware: ti_sci: Use devm_register_restart_handler()

Use device life-cycle managed register function to simplify probe.

Signed-off-by: Andrew Davis <afd@...com>
Reviewed-by: Gabriel Somlo <gsomlo@...il.com>
---
 drivers/firmware/ti_sci.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c
index 8b9a2556de16d..9885e1763591b 100644
--- a/drivers/firmware/ti_sci.c
+++ b/drivers/firmware/ti_sci.c
@@ -87,7 +87,6 @@ struct ti_sci_desc {
  * struct ti_sci_info - Structure representing a TI SCI instance
  * @dev:	Device pointer
  * @desc:	SoC description for this instance
- * @nb:	Reboot Notifier block
  * @d:		Debugfs file entry
  * @debug_region: Memory region where the debug message are available
  * @debug_region_size: Debug region size
@@ -103,7 +102,6 @@ struct ti_sci_desc {
  */
 struct ti_sci_info {
 	struct device *dev;
-	struct notifier_block nb;
 	const struct ti_sci_desc *desc;
 	struct dentry *d;
 	void __iomem *debug_region;
@@ -122,7 +120,6 @@ struct ti_sci_info {
 
 #define cl_to_ti_sci_info(c)	container_of(c, struct ti_sci_info, cl)
 #define handle_to_ti_sci_info(h) container_of(h, struct ti_sci_info, handle)
-#define reboot_to_ti_sci_info(n) container_of(n, struct ti_sci_info, nb)
 
 #ifdef CONFIG_DEBUG_FS
 
@@ -3254,10 +3251,9 @@ devm_ti_sci_get_resource(const struct ti_sci_handle *handle, struct device *dev,
 }
 EXPORT_SYMBOL_GPL(devm_ti_sci_get_resource);
 
-static int tisci_reboot_handler(struct notifier_block *nb, unsigned long mode,
-				void *cmd)
+static int tisci_reboot_handler(struct sys_off_data *data)
 {
-	struct ti_sci_info *info = reboot_to_ti_sci_info(nb);
+	struct ti_sci_info *info = data->cb_data;
 	const struct ti_sci_handle *handle = &info->handle;
 
 	ti_sci_cmd_core_reboot(handle);
@@ -3400,10 +3396,9 @@ static int ti_sci_probe(struct platform_device *pdev)
 	ti_sci_setup_ops(info);
 
 	if (reboot) {
-		info->nb.notifier_call = tisci_reboot_handler;
-		info->nb.priority = 128;
-
-		ret = register_restart_handler(&info->nb);
+		ret = devm_register_restart_handler(dev,
+						    tisci_reboot_handler,
+						    info);
 		if (ret) {
 			dev_err(dev, "reboot registration fail(%d)\n", ret);
 			goto out;
-- 
2.39.2