SD reader does not work with kernel > 2.6.36

vm666 · n00b Joined: 24 Oct 2003 Posts: 70

I have a HP Pavilion DV7 2170EF laptop. It has a SD reader. Until kernel 2.6.36-gentoo-r8, everything was fine. Since 2.6.37-gentoo-r4, it returns invalid data. If the SD card is not write protected, the FAT file system is corrupted on umount most of the time. I unmasked 2.6.38-gentoo-r4, the problem remains.
I tried to minimize the changes in the kernel config file between 2.6.36 and 2.6.37, no luck.
I suspect that the read block are truncated (JPEG pictures appear with diagonal stripes) but I did not investigate further.

What can I do to debug that problem?

lspci -v gives this:
06:00.1 System peripheral: JMicron Technology Corp. SD/MMC Host Controller
Subsystem: Hewlett-Packard Company Device 3624
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at d6000b00 (32-bit, non-prefetchable) [size=256]
Capabilities: [a4] Power Management version 3
Capabilities: [80] Express Endpoint, MSI 00
Capabilities: [94] MSI: Enable- Count=1/1 Maskable- 64bit-
Kernel driver in use: sdhci-pci
Kernel modules: sdhci-pci

06:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller (prog-if 01)
Subsystem: Hewlett-Packard Company Device 3624
Flags: fast devsel, IRQ 16
Memory at d6000a00 (32-bit, non-prefetchable) [size=256]
Capabilities: [a4] Power Management version 3
Capabilities: [80] Express Endpoint, MSI 00
Capabilities: [94] MSI: Enable- Count=1/1 Maskable- 64bit-
Kernel modules: sdhci-pci

MrStill · Posted: Wed May 18, 2011 1:01 am Post subject:

Same issue here with my Acer Aspire One. SD card reader nor the multi-card reader are functional.

vm666 · n00b Joined: 24 Oct 2003 Posts: 70

I tried the vanilla kernel. The SD reader works with 2.6.36.4 but fails with 2.6.37.6.
The bug is not in the Gentoo source.

How can this be reported to the Linux kernel developers? I'm not familiar with the "procedure".