linux-kernel - Re: Null Pointer BUG in uhci

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Date:	Thu, 9 Jul 2009 11:07:28 -0500
From:	"Michael S. Zick" <lkml@...ethan.org>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Oliver Neukum <oliver@...kum.org>, Jiri Kosina <jkosina@...e.cz>,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: Null Pointer BUG in uhci_hcd

On Thu July 9 2009, Alan Stern wrote:
> On Thu, 9 Jul 2009, Michael S. Zick wrote:
> 

Going to have to mark this thread as "suspended" -
Have a 1Mbyte per minute memory leak that needs finding first.  ;)

Mike
> > In case you missed it - this is the CX700 integrated chipset in a NetBook.
> > No all USB devices are removable in the sense of being physically impossible.
> 
> Do the best you can.
> 
> > The documentation for the CX700 has been released from NDA and is available
> > at the VIA Linux portal - just in case you don't already have your copy.
> > 
> > More testing today - including trying some of the many kernel options available
> > for dealing with funky irq, bios, and acpi implementations.
> > 
> > On the subject of irq's:
> > 
> > root@...1:~# biosdecode
> > # biosdecode 2.9
> > SMBIOS 2.4 present.
> >         Structure Table Length: 1556 bytes
> >         Structure Table Address: 0x000DC010
> >         Number Of Structures: 47
> >         Maximum Structure Size: 119 bytes
> > BIOS32 Service Directory present.
> >         Revision: 0
> >         Calling Interface Address: 0x000FDD64
> > ACPI 1.0 present.
> >         OEM Identifier: PTLTD
> >         RSD Table 32-bit Address: 0x1BEE5663
> > PNP BIOS 1.0 present.
> >         Event Notification: Not Supported
> >         Real Mode 16-bit Code Address: E923:768E
> >         Real Mode 16-bit Data Address: 0040:0000
> >         16-bit Protected Mode Code Address: 0x00015FCF
> >         16-bit Protected Mode Data Address: 0x00000400
> > PCI Interrupt Routing 1.0 present.
> >         Router ID: 00:11.0
> >         Exclusive IRQs: None
> >         Compatible Router: 1106:8324
> >         Slot Entry 1: ID 00:00, on-board
> >         Slot Entry 2: ID 00:11, on-board
> >         Slot Entry 3: ID 00:10, on-board
> >         Slot Entry 4: ID 00:0f, on-board
> >         Slot Entry 5: ID 04:09, slot number 9
> >         Slot Entry 6: ID 00:01, on-board
> >         Slot Entry 7: ID 01:00, on-board
> >         Slot Entry 8: ID 00:13, on-board
> >         Slot Entry 9: ID 02:01, on-board
> >         Slot Entry 10: ID 00:13, on-board
> >         Slot Entry 11: ID 03:03, slot number 49
> >         Slot Entry 12: ID 03:04, slot number 50
> >         Slot Entry 13: ID 03:05, slot number 51
> >         Slot Entry 14: ID 03:06, slot number 52
> >         Slot Entry 15: ID 03:07, slot number 53
> 
> Means nothing to me.  I'm no ACPI or chipset expert.
> 
> > Whatever a VIA 8324 router happens to be - - -
> > 
> > All four of the different brands of "Nano-book reference design"
> > machines have the same, or very similar, BIOS (all the VIA demo
> > board BIOS).  That interrupt table is the same in all machines.
> > Only one of the manufacturer's even bothered to change the serial
> > number of the machine (1234567890) - they are that "similar".
> 
> Alan Stern
> 
> 
> 


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