Integrated SD/mmc card reader

Question

I have a strange problem with the integrated sd/mmc card reader on my laptop. I know I have everything correctly configured and the needed modules loaded because I can use a 16MB and a 128MB SD cards without any problem. When I insert any of them udev creates the devices:
From /var/log/messages.log
mmcblk0: mmc0:1d00 SD016 14560KiB
mmcblk0: p1
mmcblk0: mmc0:4125 SD128 123008KiB
mmcblk0: p1
and the devices:
ls -l /dev/mm*
brw-rw---- 1 root disk 254, 0 abr 10 17:14 /dev/mmcblk0
brw-rw---- 1 root disk 254, 1 abr 10 17:14 /dev/mmcblk0p1
I can mount the second device and access to the card.
But if I use a 256MB or a 1GB card udev does not detect them and does not create the mmcblk devices. Also no messages in the logs. Any idea of the reason?
The only log is when I remove the card:
mmc0: Card removed during transfer!
mmc0: Resetting chip
Some days ago I was still using Slackware and I could read these two cards. The kernel was a 2.6.17, so it may be a bug in the 2.6.20 kernel?
The card reader is a Winbond W83L51xD and the modules required are mmc_core, mmc_block and wbsd.

Answer 1

So this is what my /etc/modprobe.d/mmc.conf contains:
options sdhci debug_quirks=0x40
options firewire-ohci quirks=0x10 debug=0xf
and now, on reboot, when loading user-specified modules, I get the same error:
mmc0: Unknown controller version (16). You may experience problems.
and this is what dmesg says now:
Feb 12 21:43:17 localhost kernel: [ 5.253868] sdhci: Secure Digital Host Controller Interface driver
Feb 12 21:43:17 localhost kernel: [ 5.253873] sdhci: Copyright(c) Pierre Ossman
Feb 12 21:43:17 localhost kernel: [ 5.261558] sdhci-pci 0000:06:02.2: SDHCI controller found [1217:7120] (rev 1)
Feb 12 21:43:17 localhost kernel: [ 5.261577] sdhci-pci 0000:06:02.2: PCI INT A -> GSI 16 (level, low) -> IRQ 16
Feb 12 21:43:17 localhost kernel: [ 5.261602] mmc0: Unknown controller version (16). You may experience problems.
Feb 12 21:43:17 localhost kernel: [ 5.261807] _regulator_get: 0000:06:02.2 supply vmmc not found, using dummy regulator
Feb 12 21:43:17 localhost kernel: [ 5.261874] Registered led device: mmc0::
Feb 12 21:43:17 localhost kernel: [ 5.262941] mmc0: SDHCI controller on PCI [0000:06:02.2] using PIO
Feb 12 21:43:17 localhost kernel: [ 5.293700] firewire_ohci 0000:06:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
Feb 12 21:43:17 localhost kernel: [ 5.293710] firewire_ohci 0000:06:02.0: setting latency timer to 64
Last edited by sergiuniculescu (2012-02-12 20:50:16)