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authorAndrew Morton <akpm@osdl.org>2006-03-23 01:38:34 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2006-04-14 11:41:25 -0700
commit026694920579590c73b5c56705d543568ed5ad41 (patch)
tree1c3ad318fe65c5812dd33008af8e77389ee31c46 /drivers/pci/pci.c
parent372254018eb1b65ee69210d11686bfc65c8d84db (diff)
[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/pci/pci.c')
-rw-r--r--drivers/pci/pci.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index bea1ad1ad5b..042fa5265cf 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -307,9 +307,11 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state)
* Can enter D0 from any state, but if we can only go deeper
* to sleep if we're already in a low power state
*/
- if (state != PCI_D0 && dev->current_state > state)
+ if (state != PCI_D0 && dev->current_state > state) {
+ printk(KERN_ERR "%s(): %s: state=%d, current state=%d\n",
+ __FUNCTION__, pci_name(dev), state, dev->current_state);
return -EINVAL;
- else if (dev->current_state == state)
+ } else if (dev->current_state == state)
return 0; /* we're already there */
/* find PCI PM capability in list */