Messages in this thread | | | From | Frans Pop <> | Subject | Re: [BUG] Suspend tries to suspend devices already in D3 | Date | Tue, 3 Feb 2009 18:42:43 +0100 |
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On Tuesday 03 February 2009, Frans Pop wrote: > Looking at iwl-agn.c the cause could be that iwl_pci_suspend() depends > on iwl_mac_stop() to call pci_save_state(). I added some debug > statements in iwl_pci_suspend() that showed priv->is_open is false, so > iwl_mac_stop does indeed *not* get called when the interface is down.
However, iwl_mac_stop() had been called when I ran ifdown just before suspending the system:
# Here I run 'ifdown wlan0': Feb 3 18:25:30 aragorn kernel: wlan0: deauthenticating by local choice (reason=3) Feb 3 18:25:30 aragorn kernel: iwlagn: MAC is in deep sleep! # The next debug statement is from iwl_mac_stop(): Feb 3 18:25:30 aragorn kernel: iwlagn FJP: state saved and device disabled Feb 3 18:25:30 aragorn kernel: wlan0: deauthenticating by local choice (reason=3) # Start of suspend: Feb 3 18:25:54 aragorn kernel: PM: Syncing filesystems ... done. Feb 3 18:25:54 aragorn kernel: Freezing user space processes ... (elapsed 0.00 seconds) done. Feb 3 18:25:54 aragorn kernel: Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done. Feb 3 18:25:54 aragorn kernel: Suspending console(s) (use no_console_suspend to debug) Feb 3 18:25:54 aragorn kernel: sd 0:0:0:0: [sda] Synchronizing SCSI cache Feb 3 18:25:54 aragorn kernel: sd 0:0:0:0: [sda] Stopping disk Feb 3 18:25:54 aragorn kernel: ACPI handle has no context! Feb 3 18:25:54 aragorn kernel: ACPI handle has no context! Feb 3 18:25:54 aragorn kernel: sdhci-pci 0000:02:06.2: PME# disabled Feb 3 18:25:54 aragorn kernel: ACPI handle has no context! Feb 3 18:25:54 aragorn acpid: client 4081[0:0] has disconnected Feb 3 18:25:54 aragorn kernel: ACPI handle has no context! # The next debug statement is from iwl_pci_suspend() and shows priv->is_open is false: Feb 3 18:25:54 aragorn kernel: iwlagn FJP: not calling iwl_mac_stop Feb 3 18:25:54 aragorn kernel: ------------[ cut here ]------------ Feb 3 18:25:54 aragorn kernel: WARNING: at drivers/pci/pci-driver.c:375 pci_legacy_suspend+0xd4/0x11a() Feb 3 18:25:54 aragorn kernel: Hardware name: HP Compaq 2510p Notebook PC Feb 3 18:25:54 aragorn kernel: PCI PM: Device state not saved by iwl_pci_suspend+0x0/0x6a [iwlagn], state is D3hot [...]
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