Bug 23212

Summary: multifunction card reader of acer aspire one stopped working
Product: Drivers Reporter: Thibault Mondary (thibm)
Component: MMC/SDAssignee: drivers_mmc-sd
Status: CLOSED DOCUMENTED    
Severity: high CC: chris, florian, maciej.rutecki, rjw
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.36 Tree: Mainline
Regression: Yes
Bug Depends on:    
Bug Blocks: 16444    
Attachments: DMESG of 2.6.36
DMESG of 2.6.35.7 (the card reader works)

Description Thibault Mondary 2010-11-18 14:03:24 UTC
On acer aspire one A110L, the multifunction card reader (on the right side, with  jmicron module) stopped working with 2.6.36.

It is not detected anymore by the kernel. Perhaps a problem with pciehp module.
Comment 1 Thibault Mondary 2010-11-18 14:04:22 UTC
Created attachment 37532 [details]
DMESG of 2.6.36
Comment 2 Thibault Mondary 2010-11-18 14:05:04 UTC
Created attachment 37542 [details]
DMESG of 2.6.35.7 (the card reader works)
Comment 3 Chris Ball 2010-11-18 23:28:35 UTC
Hi Thibault,

Could I persuade you to try a git bisect between 2.6.35->2.6.36 on this, please?  Let me know if you don't think you can do that, or would like some help.

Thanks for the report!

- Chris.
Comment 4 Chris Ball 2010-11-20 19:24:58 UTC
Thibault, here's an update from bug #16119 by Eugene Shalygin:

"trick has changed from "pciehp.pciehp_force=1" to "pcie_ports=native
pciehp.pciehp_force=1" in my case with kernel 2.6.36"

I hope this'll solve your problem.
Comment 5 Thibault Mondary 2010-11-21 13:35:31 UTC
Thanks a lot, "pcie_ports=native" solves the problem !

Thibault