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Code Issues Releases Wiki Activity

PM: sleep: Add device name to suspend_report_result()

Browse source 
Currently, suspend_report_result() prints only function information.

If any driver uses a common PM function, nobody knows who exactly
called the failing function.

A device pinter is needed to recognize the failing device.

For example:

 PM: dpm_run_callback(): pnp_bus_suspend+0x0/0x10 returns 0
 PM: dpm_run_callback(): pci_pm_suspend+0x0/0x150 returns 0

become after the change:

 serial 00:05: PM: dpm_run_callback(): pnp_bus_suspend+0x0/0x10 returns 0
 pci 0000:00:01.3: PM: dpm_run_callback(): pci_pm_suspend+0x0/0x150 returns 0

Signed-off-by: Youngjin Jang <yj84.jang@samsung.com>
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Youngjin Jang 2022-03-08 04:07:39 +09:00 committed by Rafael J. Wysocki
parent 7a64ca17e4
commit a759de6991
5 changed files with 19 additions and 19 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
drivers/base/power/main.c
View file

@ -485,7 +485,7 @@ static int dpm_run_callback(pm_callback_t cb, struct device *dev,
trace_device_pm_callback_start(dev, info, state.event);
error = cb(dev);
trace_device_pm_callback_end(dev, error);
suspend_report_result(cb, error);
suspend_report_result(dev, cb, error);
initcall_debug_report(dev, calltime, cb, error);
@ -1568,7 +1568,7 @@ static int legacy_suspend(struct device *dev, pm_message_t state,
trace_device_pm_callback_start(dev, info, state.event);
error = cb(dev, state);
trace_device_pm_callback_end(dev, error);
suspend_report_result(cb, error);
suspend_report_result(dev, cb, error);
initcall_debug_report(dev, calltime, cb, error);
@ -1855,7 +1855,7 @@ static int device_prepare(struct device *dev, pm_message_t state)
device_unlock(dev);
if (ret < 0) {
suspend_report_result(callback, ret);
suspend_report_result(dev, callback, ret);
pm_runtime_put(dev);
return ret;
}
@ -1960,10 +1960,10 @@ int dpm_suspend_start(pm_message_t state)
}
EXPORT_SYMBOL_GPL(dpm_suspend_start);
void __suspend_report_result(const char *function, void *fn, int ret)
void __suspend_report_result(const char *function, struct device *dev, void *fn, int ret)
{
if (ret)
pr_err("%s(): %pS returns %d\n", function, fn, ret);
dev_err(dev, "%s(): %pS returns %d\n", function, fn, ret);
}
EXPORT_SYMBOL_GPL(__suspend_report_result);

14
drivers/pci/pci-driver.c
View file

@ -596,7 +596,7 @@ static int pci_legacy_suspend(struct device *dev, pm_message_t state)
int error;
error = drv->suspend(pci_dev, state);
suspend_report_result(drv->suspend, error);
suspend_report_result(dev, drv->suspend, error);
if (error)
return error;
@ -775,7 +775,7 @@ static int pci_pm_suspend(struct device *dev)
int error;
error = pm->suspend(dev);
suspend_report_result(pm->suspend, error);
suspend_report_result(dev, pm->suspend, error);
if (error)
return error;
@ -821,7 +821,7 @@ static int pci_pm_suspend_noirq(struct device *dev)
int error;
error = pm->suspend_noirq(dev);
suspend_report_result(pm->suspend_noirq, error);
suspend_report_result(dev, pm->suspend_noirq, error);
if (error)
return error;
@ -1010,7 +1010,7 @@ static int pci_pm_freeze(struct device *dev)
int error;
error = pm->freeze(dev);
suspend_report_result(pm->freeze, error);
suspend_report_result(dev, pm->freeze, error);
if (error)
return error;
}
@ -1030,7 +1030,7 @@ static int pci_pm_freeze_noirq(struct device *dev)
int error;
error = pm->freeze_noirq(dev);
suspend_report_result(pm->freeze_noirq, error);
suspend_report_result(dev, pm->freeze_noirq, error);
if (error)
return error;
}
@ -1116,7 +1116,7 @@ static int pci_pm_poweroff(struct device *dev)
int error;
error = pm->poweroff(dev);
suspend_report_result(pm->poweroff, error);
suspend_report_result(dev, pm->poweroff, error);
if (error)
return error;
}
@ -1154,7 +1154,7 @@ static int pci_pm_poweroff_noirq(struct device *dev)
int error;
error = pm->poweroff_noirq(dev);
suspend_report_result(pm->poweroff_noirq, error);
suspend_report_result(dev, pm->poweroff_noirq, error);
if (error)
return error;
}

2
drivers/pnp/driver.c
View file

@ -171,7 +171,7 @@ static int __pnp_bus_suspend(struct device *dev, pm_message_t state)
if (pnp_drv->driver.pm && pnp_drv->driver.pm->suspend) {
error = pnp_drv->driver.pm->suspend(dev);
suspend_report_result(pnp_drv->driver.pm->suspend, error);
suspend_report_result(dev, pnp_drv->driver.pm->suspend, error);
if (error)
return error;
}

4
drivers/usb/core/hcd-pci.c
View file

@ -446,7 +446,7 @@ static int suspend_common(struct device *dev, bool do_wakeup)
HCD_WAKEUP_PENDING(hcd->shared_hcd))
return -EBUSY;
retval = hcd->driver->pci_suspend(hcd, do_wakeup);
suspend_report_result(hcd->driver->pci_suspend, retval);
suspend_report_result(dev, hcd->driver->pci_suspend, retval);
/* Check again in case wakeup raced with pci_suspend */
if ((retval == 0 && do_wakeup && HCD_WAKEUP_PENDING(hcd)) ||
@ -556,7 +556,7 @@ static int hcd_pci_suspend_noirq(struct device *dev)
dev_dbg(dev, "--> PCI %s\n",
pci_power_name(pci_dev->current_state));
} else {
suspend_report_result(pci_prepare_to_sleep, retval);
suspend_report_result(dev, pci_prepare_to_sleep, retval);
return retval;
}

8
include/linux/pm.h
View file

@ -770,11 +770,11 @@ extern int dpm_suspend_late(pm_message_t state);
extern int dpm_suspend(pm_message_t state);
extern int dpm_prepare(pm_message_t state);
extern void __suspend_report_result(const char *function, void *fn, int ret);
extern void __suspend_report_result(const char *function, struct device *dev, void *fn, int ret);
#define suspend_report_result(fn, ret) \
#define suspend_report_result(dev, fn, ret) \
do { \
__suspend_report_result(__func__, fn, ret); \
__suspend_report_result(__func__, dev, fn, ret); \
} while (0)
extern int device_pm_wait_for_dev(struct device *sub, struct device *dev);
@ -814,7 +814,7 @@ static inline int dpm_suspend_start(pm_message_t state)
return 0;
}
#define suspend_report_result(fn, ret) do {} while (0)
#define suspend_report_result(dev, fn, ret) do {} while (0)
static inline int device_pm_wait_for_dev(struct device *a, struct device *b)
{