2023-07-05 21:00:37

by Paul Cercueil

[permalink] [raw]
Subject: [PATCH 18/23] i2c: qup: Remove #ifdef guards for PM related functions

Use the new PM macros for the suspend and resume functions to be
automatically dropped by the compiler when CONFIG_PM or
CONFIG_PM_SLEEP are 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.

Note that the driver should probably use the DEFINE_RUNTIME_DEV_PM_OPS()
macro, as the system suspend/resume callbacks seem to not do anything
more than triggering the runtime-PM states.

Signed-off-by: Paul Cercueil <[email protected]>

---
Cc: Andy Gross <[email protected]>
Cc: Bjorn Andersson <[email protected]>
Cc: Konrad Dybcio <[email protected]>
Cc: [email protected]
---
drivers/i2c/busses/i2c-qup.c | 16 ++++------------
1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/drivers/i2c/busses/i2c-qup.c b/drivers/i2c/busses/i2c-qup.c
index 6eef1dbd00de..658d1c1c2ec8 100644
--- a/drivers/i2c/busses/i2c-qup.c
+++ b/drivers/i2c/busses/i2c-qup.c
@@ -1920,7 +1920,6 @@ static void qup_i2c_remove(struct platform_device *pdev)
pm_runtime_set_suspended(qup->dev);
}

-#ifdef CONFIG_PM
static int qup_i2c_pm_suspend_runtime(struct device *device)
{
struct qup_i2c_dev *qup = dev_get_drvdata(device);
@@ -1938,9 +1937,7 @@ static int qup_i2c_pm_resume_runtime(struct device *device)
qup_i2c_enable_clocks(qup);
return 0;
}
-#endif

-#ifdef CONFIG_PM_SLEEP
static int qup_i2c_suspend(struct device *device)
{
if (!pm_runtime_suspended(device))
@@ -1955,16 +1952,11 @@ static int qup_i2c_resume(struct device *device)
pm_request_autosuspend(device);
return 0;
}
-#endif

static const struct dev_pm_ops qup_i2c_qup_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(
- qup_i2c_suspend,
- qup_i2c_resume)
- SET_RUNTIME_PM_OPS(
- qup_i2c_pm_suspend_runtime,
- qup_i2c_pm_resume_runtime,
- NULL)
+ SYSTEM_SLEEP_PM_OPS(qup_i2c_suspend, qup_i2c_resume)
+ RUNTIME_PM_OPS(qup_i2c_pm_suspend_runtime,
+ qup_i2c_pm_resume_runtime, NULL)
};

static const struct of_device_id qup_i2c_dt_match[] = {
@@ -1980,7 +1972,7 @@ static struct platform_driver qup_i2c_driver = {
.remove_new = qup_i2c_remove,
.driver = {
.name = "i2c_qup",
- .pm = &qup_i2c_qup_pm_ops,
+ .pm = pm_ptr(&qup_i2c_qup_pm_ops),
.of_match_table = qup_i2c_dt_match,
.acpi_match_table = ACPI_PTR(qup_i2c_acpi_match),
},
--
2.40.1



2023-07-06 03:07:36

by Jonathan Cameron

[permalink] [raw]
Subject: Re: [PATCH 18/23] i2c: qup: Remove #ifdef guards for PM related functions

On Wed, 5 Jul 2023 22:43:09 +0200
Paul Cercueil <[email protected]> wrote:

> Use the new PM macros for the suspend and resume functions to be
> automatically dropped by the compiler when CONFIG_PM or
> CONFIG_PM_SLEEP are 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.
>
> Note that the driver should probably use the DEFINE_RUNTIME_DEV_PM_OPS()
> macro, as the system suspend/resume callbacks seem to not do anything
> more than triggering the runtime-PM states.
>
> Signed-off-by: Paul Cercueil <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>