Re: Putting the sdhci to sleep safely [with attachments]

From: Pavel Machek
Date: Mon Dec 25 2006 - 16:46:15 EST


(Please always cc: linux-kernel@ with such stuff).

> I am the Editor In Chief of Free Software Magazine
> (
> I am in a bit of a mission: I would like to see the module sdhci put my
> card reader to sleep without getting the system highly
> unstable. This is

Well, suspend works for me, and my machine seems to have sdhci:

0000:15:00.2 0805: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host
Adapter (rev 18)

> Pierre Ossman, the maintainer of the sdhci module, wrote to me:
> "Anyway, as far as I know, this isn't a bug in the driver, so there is
> not very much I can do. The problem is somewhere in the PCI interaction,
> but I've sent numerous mail to the kernel PCI hackers, but have yet to
> receive a single reply."

I've certainly not seen such a mail. Can you get info what is wrong
with that, and cc lkml, me and greg?

> This is why I felt there was no point for me to file a big report...

> So, here I am... please find attache my lspci and the log of what
> happens when the computer is put to sleep.
> I would also be happy to organise a bounty for this bug to be fixed.

:-). Just hunt it yourself. It is probably easier than organizing a bounty.

Ouch... you failed to mention what kernel you are using?

(cesky, pictures)
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at