linux-kernel - [PATCH 4/4] HID: rmi: remove #ifdef CONFIG

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Message-Id: <20231012-hid-pm_ptr-v1-4-0a71531ca93b@weissschuh.net>
Date:   Thu, 12 Oct 2023 12:23:41 +0200
From:   Thomas Weißschuh <linux@...ssschuh.net>
To:     Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org,
        Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH 4/4] HID: rmi: remove #ifdef CONFIG_PM

Through the usage of pm_ptr() the CONFIG_PM-dependent code will always be
compiled, protecting against bitrot.
The linker will then garbage-collect the unused function avoiding any overhead.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 drivers/hid/hid-rmi.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c
index 84e7ba5314d3..d4af17fdba46 100644
--- a/drivers/hid/hid-rmi.c
+++ b/drivers/hid/hid-rmi.c
@@ -436,7 +436,6 @@ static void rmi_report(struct hid_device *hid, struct hid_report *report)
 		input_sync(field->hidinput->input);
 }
 
-#ifdef CONFIG_PM
 static int rmi_suspend(struct hid_device *hdev, pm_message_t message)
 {
 	struct rmi_data *data = hid_get_drvdata(hdev);
@@ -483,7 +482,6 @@ static int rmi_post_resume(struct hid_device *hdev)
 	hid_hw_close(hdev);
 	return ret;
 }
-#endif /* CONFIG_PM */
 
 static int rmi_hid_reset(struct rmi_transport_dev *xport, u16 reset_addr)
 {
@@ -774,11 +772,9 @@ static struct hid_driver rmi_driver = {
 	.report			= rmi_report,
 	.input_mapping		= rmi_input_mapping,
 	.input_configured	= rmi_input_configured,
-#ifdef CONFIG_PM
-	.suspend		= rmi_suspend,
-	.resume			= rmi_post_resume,
-	.reset_resume		= rmi_post_resume,
-#endif
+	.suspend		= pm_ptr(rmi_suspend),
+	.resume			= pm_ptr(rmi_post_resume),
+	.reset_resume		= pm_ptr(rmi_post_resume),
 };
 
 module_hid_driver(rmi_driver);

-- 
2.42.0