diff options
| author | Andrew Morton <akpm@osdl.org> | 2006-03-23 10:38:34 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-04-14 20:41:25 +0200 |
| commit | 026694920579590c73b5c56705d543568ed5ad41 (patch) | |
| tree | 1c3ad318fe65c5812dd33008af8e77389ee31c46 /drivers/base | |
| parent | [PATCH] driver core: driver_bind attribute returns incorrect value (diff) | |
| download | linux-026694920579590c73b5c56705d543568ed5ad41.tar.xz linux-026694920579590c73b5c56705d543568ed5ad41.zip | |
[PATCH] pm: print name of failed suspend function
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>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/power/suspend.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/base/power/suspend.c b/drivers/base/power/suspend.c index bdb60663f2ef..662209d3f42d 100644 --- a/drivers/base/power/suspend.c +++ b/drivers/base/power/suspend.c @@ -10,6 +10,8 @@ #include <linux/vt_kern.h> #include <linux/device.h> +#include <linux/kallsyms.h> +#include <linux/pm.h> #include "../base.h" #include "power.h" @@ -58,6 +60,7 @@ int suspend_device(struct device * dev, pm_message_t state) if (dev->bus && dev->bus->suspend && !dev->power.power_state.event) { dev_dbg(dev, "suspending\n"); error = dev->bus->suspend(dev, state); + suspend_report_result(dev->bus->suspend, error); } up(&dev->sem); return error; @@ -169,3 +172,12 @@ int device_power_down(pm_message_t state) EXPORT_SYMBOL_GPL(device_power_down); +void __suspend_report_result(const char *function, void *fn, int ret) +{ + if (ret) { + printk(KERN_ERR "%s(): ", function); + print_fn_descriptor_symbol("%s() returns ", (unsigned long)fn); + printk("%d\n", ret); + } +} +EXPORT_SYMBOL_GPL(__suspend_report_result); |