Problem with my sd card reader
 

Hi,

i am having some problem with my sd card reader, i have an hp compaq nx 7010,
i have installed recently a fedora 6 with the 2.6.20-1.2944.fc6 kernel, today i decided
to configure my sd card reader without any success.
I have loaded the following modules :mmc_block, sdhci, wbsd,mmc_core
When i first inserted the card nothing appears, so i tried to do the things manually
i did mknod /dev/mmcblk0p1 b 254 0
then mount -t vfat /dev/mmcblk0p1 /mnt/mmc and i got:
mount: /dev/mmcblk0p1: can't read superblock


/sbin/lspci -v give this :
02:04.0 CardBus bridge: ENE Technology Inc CB1410 Cardbus Controller (rev 01)
Subsystem: Compaq Computer Corporation Unknown device 0860
Flags: bus master, medium devsel, latency 168, IRQ 5
Memory at 90100000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=02, secondary=03, subordinate=06, sec-latency=176
Memory window 0: 20000000-23fff000 (prefetchable)
Memory window 1: 28000000-2bfff000
I/O window 0: 00002800-000028ff
I/O window 1: 00002c00-00002cff
16-bit legacy interface ports at 0001

/sbin/lsusb gives this :
Bus 001 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
Bus 003 Device 002: ID 049f:0086 Compaq Computer Corp.
Bus 003 Device 001: ID 0000:0000
Bus 004 Device 001: ID 0000:0000

less /var/log/messages | grep mmc gives this:
Apr 30 18:38:13 Hachem kernel: mmc0: W83L51xD id 7112 at 0x248 irq 6 dma 0 PnP
Apr 30 20:47:51 Hachem kernel: mmc0: Card removed during transfer!
Apr 30 20:47:51 Hachem kernel: mmc0: Resetting chip
Apr 30 20:47:51 Hachem kernel: mmc0: Incomplete DMA transfer. 64 bytes left.
Apr 30 20:59:18 Hachem kernel: mmc0: Card removed during transfer!
Apr 30 20:59:18 Hachem kernel: mmc0: Resetting chip
Apr 30 20:59:18 Hachem kernel: mmc0: Incomplete DMA transfer. 64 bytes left.
Apr 30 22:42:08 Hachem kernel: mmc0: W83L51xD id 7112 at 0x200 irq 11 dma 0 PnP
Apr 30 22:51:20 Hachem kernel: mmc0: W83L51xD id 7112 at 0x248 irq 6 dma 0 PnP
Apr 30 23:14:42 Hachem kernel: mmc0: Card removed during transfer!
Apr 30 23:14:42 Hachem kernel: mmc0: Resetting chip
Apr 30 23:14:42 Hachem kernel: mmc0: Incomplete DMA transfer. 64 bytes left.
Apr 30 23:58:00 Hachem kernel: mmc0: Card removed during transfer!
Apr 30 23:58:00 Hachem kernel: mmc0: Resetting chip
Apr 30 23:58:00 Hachem kernel: mmc0: Incomplete DMA transfer. 64 bytes left.mount: /dev/mmcblk0p1: can't read superblock

i saw in a forum that there is a bug on 2.6.20 kernel, do you think this is the problem???

Any suggestion,
Thanks in advance.

Best Regards,
Hachem

Have you tried the latest 2.6.21.1? You can see if this got fixed by looking in the kernel changelogs at www.kernel.org.

I hate to hijack this thread, but I doubt the change logs will contain anything relevant. I was able to mount my SD memory stick using version 2.6.19-??. After upgrading to 2.6.21-1.2316.fc5 (using 'yum update') I am no longer able to mount. In fact the MMC SD port is not even detected.; nothing is listed in /var/log/dmesg.

It appears that the latest kernel has digressed, not improved. Hopefully the powers that be will read this post and correct the deficiency soon.