Re: 2.6.20-rc6 SCSI error: I/O error - trouble with mass storage devices ?!

Alan Stern <[email protected]>
Newsgroups gmane.linux.usb.devel,gmane.linux.kernel
Message-ID <[email protected]>
On Sat, 27 Jan 2007, Soeren Sonnenburg wrote:

> Dear all,
> 
> I am trying to use a P990 phone in via mass storage under linux. I was
> able to copy data to/from the phone without trouble under winxp but
> receive millions of I/O errors (see below (*), basically on any sector).
> As this was also happening on a casio camera (and working on winxp) I
> tried a couple of things to nail this down:

...

> 4) I enabled usb mass storage verbose debug output and collected 2 runs
> of I/O once with the sandisk and one with the P990 (attached as sandisk
> and p990)

...

> Now I am clueless what could have gone wrong (as I *think* this was all
> working at some point at least before firmware updates) and what the
> difference between these mass storage devices is.

The log revealed that the phone's firmware returns garbage values in the 
Residue field for some WRITEs.  This patch should take care of it.

Alan Stern



Index: usb-2.6/drivers/usb/storage/unusual_devs.h
===================================================================
--- usb-2.6.orig/drivers/usb/storage/unusual_devs.h
+++ usb-2.6/drivers/usb/storage/unusual_devs.h
@@ -1318,12 +1318,13 @@ UNUSUAL_DEV(  0x0fce, 0xe031, 0x0000, 0x
 		US_SC_DEVICE, US_PR_DEVICE, NULL,
 		US_FL_FIX_CAPACITY ),
 
-/* Reported by Jan Mate <[email protected]> */
+/* Reported by Jan Mate <[email protected]>
+ * and by Soeren Sonnenburg <[email protected]> */
 UNUSUAL_DEV(  0x0fce, 0xe030, 0x0000, 0x0000,
 		"Sony Ericsson",
 		"P990i",
 		US_SC_DEVICE, US_PR_DEVICE, NULL,
-		US_FL_FIX_CAPACITY ),
+		US_FL_FIX_CAPACITY | US_FL_IGNORE_RESIDUE ),
 
 /* Reported by Kevin Cernekee <[email protected]>
  * Tested on hardware version 1.10.


-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys - and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
[email protected]
To unsubscribe, use the last form field at:
https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.