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ACPI: TAD: Improve runtime PM using guard macros 

Use guard pm_runtime_active_try to simplify runtime PM cleanup and
implement runtime resume error handling in multiple places.

Also use guard pm_runtime_noresume to simplify acpi_tad_remove().

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Link: https://patch.msgid.link/13881356.uLZWGnKmhe@rafael.j.wysocki
This commit is contained in:
Rafael J. Wysocki 2025-10-21 19:35:54 +02:00
parent f9f5e22b75
commit 58ca21d591
1 changed files with 38 additions and 34 deletions
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72
drivers/acpi/acpi_tad.c
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@ -90,19 +90,18 @@ static int acpi_tad_set_real_time(struct device *dev, struct acpi_tad_rt *rt)
args[0].buffer.pointer = (u8 *)rt;
args[0].buffer.length = sizeof(*rt);
pm_runtime_get_sync(dev);
ACQUIRE(pm_runtime_active_try, pm)(dev);
if (ACQUIRE_ERR(pm_runtime_active_try, &pm))
return -ENXIO;
status = acpi_evaluate_integer(handle, "_SRT", &arg_list, &retval);
pm_runtime_put_sync(dev);
if (ACPI_FAILURE(status) || retval)
return -EIO;
return 0;
}
static int acpi_tad_get_real_time(struct device *dev, struct acpi_tad_rt *rt)
static int acpi_tad_evaluate_grt(struct device *dev, struct acpi_tad_rt *rt)
{
acpi_handle handle = ACPI_HANDLE(dev);
struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER };
@ -111,12 +110,7 @@ static int acpi_tad_get_real_time(struct device *dev, struct acpi_tad_rt *rt)
acpi_status status;
int ret = -EIO;
pm_runtime_get_sync(dev);
status = acpi_evaluate_object(handle, "_GRT", NULL, &output);
pm_runtime_put_sync(dev);
if (ACPI_FAILURE(status))
goto out_free;
@ -139,6 +133,21 @@ static int acpi_tad_get_real_time(struct device *dev, struct acpi_tad_rt *rt)
return ret;
}
static int acpi_tad_get_real_time(struct device *dev, struct acpi_tad_rt *rt)
{
int ret;
ACQUIRE(pm_runtime_active_try, pm)(dev);
if (ACQUIRE_ERR(pm_runtime_active_try, &pm))
return -ENXIO;
ret = acpi_tad_evaluate_grt(dev, rt);
if (ret)
return ret;
return 0;
}
static char *acpi_tad_rt_next_field(char *s, int *val)
{
char *p;
@ -266,12 +275,11 @@ static int acpi_tad_wake_set(struct device *dev, char *method, u32 timer_id,
args[0].integer.value = timer_id;
args[1].integer.value = value;
pm_runtime_get_sync(dev);
ACQUIRE(pm_runtime_active_try, pm)(dev);
if (ACQUIRE_ERR(pm_runtime_active_try, &pm))
return -ENXIO;
status = acpi_evaluate_integer(handle, method, &arg_list, &retval);
pm_runtime_put_sync(dev);
if (ACPI_FAILURE(status) || retval)
return -EIO;
@ -314,12 +322,11 @@ static ssize_t acpi_tad_wake_read(struct device *dev, char *buf, char *method,
args[0].integer.value = timer_id;
pm_runtime_get_sync(dev);
ACQUIRE(pm_runtime_active_try, pm)(dev);
if (ACQUIRE_ERR(pm_runtime_active_try, &pm))
return -ENXIO;
status = acpi_evaluate_integer(handle, method, &arg_list, &retval);
pm_runtime_put_sync(dev);
if (ACPI_FAILURE(status))
return -EIO;
@ -370,12 +377,11 @@ static int acpi_tad_clear_status(struct device *dev, u32 timer_id)
args[0].integer.value = timer_id;
pm_runtime_get_sync(dev);
ACQUIRE(pm_runtime_active_try, pm)(dev);
if (ACQUIRE_ERR(pm_runtime_active_try, &pm))
return -ENXIO;
status = acpi_evaluate_integer(handle, "_CWS", &arg_list, &retval);
pm_runtime_put_sync(dev);
if (ACPI_FAILURE(status) || retval)
return -EIO;
@ -411,12 +417,11 @@ static ssize_t acpi_tad_status_read(struct device *dev, char *buf, u32 timer_id)
args[0].integer.value = timer_id;
pm_runtime_get_sync(dev);
ACQUIRE(pm_runtime_active_try, pm)(dev);
if (ACQUIRE_ERR(pm_runtime_active_try, &pm))
return -ENXIO;
status = acpi_evaluate_integer(handle, "_GWS", &arg_list, &retval);
pm_runtime_put_sync(dev);
if (ACPI_FAILURE(status))
return -EIO;
@ -571,16 +576,15 @@ static void acpi_tad_remove(struct platform_device *pdev)
sysfs_remove_group(&dev->kobj, &acpi_tad_attr_group);
pm_runtime_get_noresume(dev);
acpi_tad_disable_timer(dev, ACPI_TAD_AC_TIMER);
acpi_tad_clear_status(dev, ACPI_TAD_AC_TIMER);
if (dd->capabilities & ACPI_TAD_DC_WAKE) {
acpi_tad_disable_timer(dev, ACPI_TAD_DC_TIMER);
acpi_tad_clear_status(dev, ACPI_TAD_DC_TIMER);
scoped_guard(pm_runtime_noresume, dev) {
acpi_tad_disable_timer(dev, ACPI_TAD_AC_TIMER);
acpi_tad_clear_status(dev, ACPI_TAD_AC_TIMER);
if (dd->capabilities & ACPI_TAD_DC_WAKE) {
acpi_tad_disable_timer(dev, ACPI_TAD_DC_TIMER);
acpi_tad_clear_status(dev, ACPI_TAD_DC_TIMER);
}
}
pm_runtime_put_noidle(dev);
pm_runtime_suspend(dev);
pm_runtime_disable(dev);
acpi_remove_cmos_rtc_space_handler(handle);