Bug 23212 - multifunction card reader of acer aspire one stopped working
Summary: multifunction card reader of acer aspire one stopped working
Status: CLOSED DOCUMENTED
Alias: None
Product: Drivers
Classification: Unclassified
Component: MMC/SD (show other bugs)
Hardware: All Linux
: P1 high
Assignee: drivers_mmc-sd
URL:
Keywords:
Depends on:
Blocks: 16444
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Reported: 2010-11-18 14:03 UTC by Thibault Mondary
Modified: 2010-12-05 19:47 UTC (History)
4 users (show)

See Also:
Kernel Version: 2.6.36
Subsystem:
Regression: Yes
Bisected commit-id:

Attachments
DMESG of 2.6.36 (45.29 KB, text/plain)
2010-11-18 14:04 UTC, Thibault Mondary 		Details
DMESG of 2.6.35.7 (the card reader works) (50.67 KB, text/plain)
2010-11-18 14:05 UTC, Thibault Mondary 		Details
Add an attachment (proposed patch, testcase, etc.)

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
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