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[PATCH] pm: print name of failed suspend function

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Print more diagnostic info to help identify the source of power management
suspend failures.

Example:

usb_hcd_pci_suspend(): pci_set_power_state+0x0/0x1af() returns -22
pci_device_suspend(): usb_hcd_pci_suspend+0x0/0x11b() returns -22
suspend_device(): pci_device_suspend+0x0/0x34() returns -22

Work-in-progress.  It needs lots more suspend_report_result() calls sprinkled
everywhere.

Cc: Patrick Mochel <mochel@digitalimplant.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Nigel Cunningham <nigel@suspend2.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Andrew Morton
2006-03-23 01:38:34 -08:00
committed by Greg Kroah-Hartman
parent 372254018e
commit 0266949205
5 changed files with 31 additions and 8 deletions
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8
include/linux/pm.h
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@@ -199,6 +199,12 @@ extern int device_suspend(pm_message_t state);
extern int dpm_runtime_suspend(struct device *, pm_message_t);
extern void dpm_runtime_resume(struct device *);
extern void __suspend_report_result(const char *function, void *fn, int ret);
#define suspend_report_result(fn, ret) \
do { \
__suspend_report_result(__FUNCTION__, fn, ret); \
} while (0)
#else /* !CONFIG_PM */
@@ -219,6 +225,8 @@ static inline void dpm_runtime_resume(struct device * dev)
{
}
#define suspend_report_result(fn, ret) do { } while (0)
#endif
/* changes to device_may_wakeup take effect on the next pm state change.