[Bugme-new] [Bug 13434] New: SD reader does not read MMC cards on Thinkpad T400

bugzilla-daemon at bugzilla.kernel.org bugzilla-daemon at bugzilla.kernel.org
Wed Jun 3 03:25:46 PDT 2009


http://bugzilla.kernel.org/show_bug.cgi?id=13434

           Summary: SD reader does not read MMC cards on Thinkpad T400
           Product: Drivers
           Version: 2.5
    Kernel Version: 2.6.30-rc7
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: MMC/SD
        AssignedTo: drivers_mmc-sd at kernel-bugs.osdl.org
        ReportedBy: dottedmag at dottedmag.net
        Regression: No


Created an attachment (id=21727)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=21727)
lspci -vvvnnn

Hardware: Thinkpad T400, internal cardreader (Ricoh R5C832/R5C822/R5C843)
Distro: Debian testing/unstable/experimental.
lsmod, lspci & dmesg: in attachments.

Card reader of T400 does not detect MMC cards with the following message in
dmesg:

[   80.914656] mmc0: error -110 whilst initialising MMC card

Sometimes this message does not appear at all, and card is not detected too.

I've figured out that MMC cards are served by the SD controller, and it is
activated by the mmc_block module, which is loaded.

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