linux-kernel - [PATCH 17/26] drm: rcar-du: Remove #ifdef guards for PM related functions

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: <20221107175256.360839-7-paul@crapouillou.net>
Date:   Mon,  7 Nov 2022 17:52:47 +0000
From:   Paul Cercueil <paul@...pouillou.net>
To:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Paul Cercueil <paul@...pouillou.net>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        linux-renesas-soc@...r.kernel.org
Subject: [PATCH 17/26] drm: rcar-du: Remove #ifdef guards for PM related functions

Use the DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() macros to handle
the .suspend/.resume callbacks.

These macros allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_SUSPEND is disabled, without having
to use #ifdef guards.

This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.

Signed-off-by: Paul Cercueil <paul@...pouillou.net>
---
Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
Cc: linux-renesas-soc@...r.kernel.org
---
 drivers/gpu/drm/rcar-du/rcar_du_drv.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index a2776f1d6f2c..0a89094461cc 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -599,7 +599,6 @@ static const struct drm_driver rcar_du_driver = {
  * Power management
  */
 
-#ifdef CONFIG_PM_SLEEP
 static int rcar_du_pm_suspend(struct device *dev)
 {
 	struct rcar_du_device *rcdu = dev_get_drvdata(dev);
@@ -613,11 +612,9 @@ static int rcar_du_pm_resume(struct device *dev)
 
 	return drm_mode_config_helper_resume(&rcdu->ddev);
 }
-#endif
 
-static const struct dev_pm_ops rcar_du_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(rcar_du_pm_suspend, rcar_du_pm_resume)
-};
+static DEFINE_SIMPLE_DEV_PM_OPS(rcar_du_pm_ops,
+				rcar_du_pm_suspend, rcar_du_pm_resume);
 
 /* -----------------------------------------------------------------------------
  * Platform driver
@@ -712,7 +709,7 @@ static struct platform_driver rcar_du_platform_driver = {
 	.shutdown	= rcar_du_shutdown,
 	.driver		= {
 		.name	= "rcar-du",
-		.pm	= &rcar_du_pm_ops,
+		.pm	= pm_sleep_ptr(&rcar_du_pm_ops),
 		.of_match_table = rcar_du_of_table,
 	},
 };
-- 
2.35.1