On Monday 11 July 2011 10:16:33 Alan Mackenzie did opine thusly:
> Hi, Gentoo.
> 
> Just done an "emerge -puND world".  One of the packages updated was
> sys-fs/udisks-1.0.3-r1.  Its warning message was:
> 
>     CONFIG_USB_SUSPEND:         is not set when it should be.
>       * Please check to make sure these options are set correctly.
>       * Failure to do so may cause unexpected problems.
> 
> CONFIG_USB_SUSPEND is surely a kernel config thing.  I can't find it
> in my kernel config file.  However, in "make menuconfig" I do a
> search for "USB_SUSPEND", It says:
> 
>    Location:
>   │     -> Device Drivers
>   │       -> USB support (USB_SUPPORT [=y])
>   │         -> Support for Host-side USB (USB [=y])
> 
> I can't find anything at that location which looks like
> "USB_SUSPEND".
> 
> Would somebody please help me to resolve my confusion.  Thanks in
> advance.

Symbol: USB_SUSPEND [=y]                                                        
                                                                                
                                                                    
│   
  │ Type  : boolean                                                             
                                                                                
                                                                        
│   
  │ Prompt: USB runtime power management (autosuspend) and wakeup               
                                                                                
                                                                        
│   
  │   Defined at drivers/usb/core/Kconfig:93                                    
                                                                                
                                                                        
│   
  │   Depends on: USB_SUPPORT [=y] && USB [=m] && PM_RUNTIME [=y]               
                                                                                
                                                                        
│   
  │   Location:                                                                 
                                                                                
                                                                        
│   
  │     -> Device Drivers                                                       
                                                                                
                                                                        
│   
  │       -> USB support (USB_SUPPORT [=y])                                     
                                                                                
                                                                        
│   
  │         -> Support for Host-side USB (USB [=m])                             
                                                                                
                                                                        
│   
  │ 


It needs PM_RUNTIME, found at 

-> Power management and ACPI options


-- 
alan dot mckinnon at gmail dot com

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