Problem with Multiblock Write in PXA270 MMC Driver

[Larry Martin]

This is a followup to:
How do you access MMC driver set_ios?
http://lists.arm.linux.org.uk/lurker/message/20101007.144606.f7a7fbcd.en.html

The real problem turned out to be that some SD cards fail multiblock 
write with the PXA270 MMC driver.  In our sample, the failing cards were 
all Sandisk 2GB marked "MADE IN CHINA".  Sandisk verified that they were 
genuine (i.e. not counterfeit).  Host platform was Gumstix Verdex Pro. 
Individual units vary in their failures, so it is likely a signal issue 
on the boards; it could also likely be an opportunity to make the PXA 
drivers more robust.

Full details are at:
http://old.nabble.com/Root-Cause%3A-Intermittent-SD-Card-Failures-on-Verdex-Pro-to29985059.html

Good luck, MMC Driver Maintainers.

-- 
Larry Martin
www.GlueLogix.com