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Message-Id: <20220307190739.659955-1-yj84.jang@samsung.com>
Date: Tue, 8 Mar 2022 04:07:39 +0900
From: Youngjin Jang <yj84.jang@...sung.com>
To: "Rafael J. Wysocki" <rafael@...nel.org>,
Pavel Machek <pavel@....cz>, Len Brown <len.brown@...el.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Bjorn Helgaas <bhelgaas@...gle.com>, linux-pm@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
linux-acpi@...r.kernel.org, linux-usb@...r.kernel.org,
todd.e.brandt@...ux.intel.com
Cc: Youngjin Jang <yj84.jang@...sung.com>, js07.lee@...sung.com
Subject: [PATCH v3] PM: Add device name to suspend_report_result()
currently, suspend_report_result() prints only function information.
If any driver uses common pm function, nobody knows who called
failed function exactly.
So, device is needed to recognize specific wrong driver.
e.g.)
PM: dpm_run_callback(): pnp_bus_suspend+0x0/0x10 returns 0
PM: dpm_run_callback(): pci_pm_suspend+0x0/0x150 returns 0
after patch,
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@...sung.com>
---
Changes since v2:
- Update commit message, example logs
Changes since v1:
- Use dev_err() to print out device name
- Use real name on email sender
drivers/base/power/main.c | 10 +++++-----
drivers/pci/pci-driver.c | 14 +++++++-------
drivers/pnp/driver.c | 2 +-
drivers/usb/core/hcd-pci.c | 4 ++--
include/linux/pm.h | 8 ++++----
5 files changed, 19 insertions(+), 19 deletions(-)
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 04ea92cbd9cf..41e17b8c2c20 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -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);
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index f61c40a47891..4ceeb75fc899 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -607,7 +607,7 @@ 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;
@@ -786,7 +786,7 @@ 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;
@@ -832,7 +832,7 @@ 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;
@@ -1021,7 +1021,7 @@ 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;
}
@@ -1041,7 +1041,7 @@ 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;
}
@@ -1127,7 +1127,7 @@ 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;
}
@@ -1165,7 +1165,7 @@ 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;
}
diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c
index cc6757dfa3f1..c02e7bf643a6 100644
--- a/drivers/pnp/driver.c
+++ b/drivers/pnp/driver.c
@@ -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;
}
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index 784466117c92..8176bc81a635 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -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;
}
diff --git a/include/linux/pm.h b/include/linux/pm.h
index f7d2be686359..e65b3ab28377 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -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)
{
--
2.25.1
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