Re: [PATCH 16/26] drm: panfrost: Remove #ifdef guards for PM related functions
On 07/11/2022 17:52, Paul Cercueil wrote:
> Use the EXPORT_GPL_RUNTIME_DEV_PM_OPS() and pm_ptr() macros to handle
> the PM callbacks.
>
> These macros allow the PM functions to be automatically dropped by the
> compiler when CONFIG_PM 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
Reviewed-by: Steven Price
> ---
> Cc: Rob Herring
> Cc: Tomeu Vizoso
> Cc: Steven Price
> Cc: Alyssa Rosenzweig
> ---
> drivers/gpu/drm/panfrost/panfrost_device.c | 10 ++
> drivers/gpu/drm/panfrost/panfrost_device.h | 4 ++--
> drivers/gpu/drm/panfrost/panfrost_drv.c| 7 +--
> 3 files changed, 9 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/panfrost/panfrost_device.c
> b/drivers/gpu/drm/panfrost/panfrost_device.c
> index ee612303f076..fa1a086a862b 100644
> --- a/drivers/gpu/drm/panfrost/panfrost_device.c
> +++ b/drivers/gpu/drm/panfrost/panfrost_device.c
> @@ -6,6 +6,7 @@
> #include
> #include
> #include
> +#include
> #include
>
> #include "panfrost_device.h"
> @@ -400,8 +401,7 @@ void panfrost_device_reset(struct panfrost_device *pfdev)
> panfrost_job_enable_interrupts(pfdev);
> }
>
> -#ifdef CONFIG_PM
> -int panfrost_device_resume(struct device *dev)
> +static int panfrost_device_resume(struct device *dev)
> {
> struct panfrost_device *pfdev = dev_get_drvdata(dev);
>
> @@ -411,7 +411,7 @@ int panfrost_device_resume(struct device *dev)
> return 0;
> }
>
> -int panfrost_device_suspend(struct device *dev)
> +static int panfrost_device_suspend(struct device *dev)
> {
> struct panfrost_device *pfdev = dev_get_drvdata(dev);
>
> @@ -423,4 +423,6 @@ int panfrost_device_suspend(struct device *dev)
>
> return 0;
> }
> -#endif
> +
> +EXPORT_GPL_RUNTIME_DEV_PM_OPS(panfrost_pm_ops, panfrost_device_suspend,
> + panfrost_device_resume, NULL);
> diff --git a/drivers/gpu/drm/panfrost/panfrost_device.h
> b/drivers/gpu/drm/panfrost/panfrost_device.h
> index 8b25278f34c8..d9ba68cffb77 100644
> --- a/drivers/gpu/drm/panfrost/panfrost_device.h
> +++ b/drivers/gpu/drm/panfrost/panfrost_device.h
> @@ -7,6 +7,7 @@
>
> #include
> #include
> +#include
> #include
> #include
> #include
> @@ -172,8 +173,7 @@ int panfrost_device_init(struct panfrost_device *pfdev);
> void panfrost_device_fini(struct panfrost_device *pfdev);
> void panfrost_device_reset(struct panfrost_device *pfdev);
>
> -int panfrost_device_resume(struct device *dev);
> -int panfrost_device_suspend(struct device *dev);
> +extern const struct dev_pm_ops panfrost_pm_ops;
>
> enum drm_panfrost_exception_type {
> DRM_PANFROST_EXCEPTION_OK = 0x00,
> diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c
> b/drivers/gpu/drm/panfrost/panfrost_drv.c
> index 2fa5afe21288..fa619fe72086 100644
> --- a/drivers/gpu/drm/panfrost/panfrost_drv.c
> +++ b/drivers/gpu/drm/panfrost/panfrost_drv.c
> @@ -676,17 +676,12 @@ static const struct of_device_id dt_match[] = {
> };
> MODULE_DEVICE_TABLE(of, dt_match);
>
> -static const struct dev_pm_ops panfrost_pm_ops = {
> - SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
> pm_runtime_force_resume)
> - SET_RUNTIME_PM_OPS(panfrost_device_suspend, panfrost_device_resume,
> NULL)
> -};
> -
> static struct platform_driver panfrost_driver = {
> .probe = panfrost_probe,
> .remove = panfrost_remove,
> .driver = {
> .name = "panfrost",
> - .pm = &panfrost_pm_ops,
> + .pm = pm_ptr(&panfrost_pm_ops),
> .of_match_table = dt_match,
> },
> };
[PATCH 16/26] drm: panfrost: Remove #ifdef guards for PM related functions
Use the EXPORT_GPL_RUNTIME_DEV_PM_OPS() and pm_ptr() macros to handle
the PM callbacks.
These macros allow the PM functions to be automatically dropped by the
compiler when CONFIG_PM 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
---
Cc: Rob Herring
Cc: Tomeu Vizoso
Cc: Steven Price
Cc: Alyssa Rosenzweig
---
drivers/gpu/drm/panfrost/panfrost_device.c | 10 ++
drivers/gpu/drm/panfrost/panfrost_device.h | 4 ++--
drivers/gpu/drm/panfrost/panfrost_drv.c| 7 +--
3 files changed, 9 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_device.c
b/drivers/gpu/drm/panfrost/panfrost_device.c
index ee612303f076..fa1a086a862b 100644
--- a/drivers/gpu/drm/panfrost/panfrost_device.c
+++ b/drivers/gpu/drm/panfrost/panfrost_device.c
@@ -6,6 +6,7 @@
#include
#include
#include
+#include
#include
#include "panfrost_device.h"
@@ -400,8 +401,7 @@ void panfrost_device_reset(struct panfrost_device *pfdev)
panfrost_job_enable_interrupts(pfdev);
}
-#ifdef CONFIG_PM
-int panfrost_device_resume(struct device *dev)
+static int panfrost_device_resume(struct device *dev)
{
struct panfrost_device *pfdev = dev_get_drvdata(dev);
@@ -411,7 +411,7 @@ int panfrost_device_resume(struct device *dev)
return 0;
}
-int panfrost_device_suspend(struct device *dev)
+static int panfrost_device_suspend(struct device *dev)
{
struct panfrost_device *pfdev = dev_get_drvdata(dev);
@@ -423,4 +423,6 @@ int panfrost_device_suspend(struct device *dev)
return 0;
}
-#endif
+
+EXPORT_GPL_RUNTIME_DEV_PM_OPS(panfrost_pm_ops, panfrost_device_suspend,
+ panfrost_device_resume, NULL);
diff --git a/drivers/gpu/drm/panfrost/panfrost_device.h
b/drivers/gpu/drm/panfrost/panfrost_device.h
index 8b25278f34c8..d9ba68cffb77 100644
--- a/drivers/gpu/drm/panfrost/panfrost_device.h
+++ b/drivers/gpu/drm/panfrost/panfrost_device.h
@@ -7,6 +7,7 @@
#include
#include
+#include
#include
#include
#include
@@ -172,8 +173,7 @@ int panfrost_device_init(struct panfrost_device *pfdev);
void panfrost_device_fini(struct panfrost_device *pfdev);
void panfrost_device_reset(struct panfrost_device *pfdev);
-int panfrost_device_resume(struct device *dev);
-int panfrost_device_suspend(struct device *dev);
+extern const struct dev_pm_ops panfrost_pm_ops;
enum drm_panfrost_exception_type {
DRM_PANFROST_EXCEPTION_OK = 0x00,
diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c
b/drivers/gpu/drm/panfrost/panfrost_drv.c
index 2fa5afe21288..fa619fe72086 100644
--- a/drivers/gpu/drm/panfrost/panfrost_drv.c
+++ b/drivers/gpu/drm/panfrost/panfrost_drv.c
@@ -676,17 +676,12 @@ static const struct of_device_id dt_match[] = {
};
MODULE_DEVICE_TABLE(of, dt_match);
-static const struct dev_pm_ops panfrost_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
- SET_RUNTIME_PM_OPS(panfrost_device_suspend, panfrost_device_resume,
NULL)
-};
-
static struct platform_driver panfrost_driver = {
.probe = panfrost_probe,
.remove = panfrost_remove,
.driver = {
.name = "panfrost",
- .pm = &panfrost_pm_ops,
+ .pm = pm_ptr(&panfrost_pm_ops),
.of_match_table = dt_match,
},
};
--
2.35.1
