--- On Fri, 6/11/10, Maxim Levitsky <[email protected]> wrote: > After thinking a lot about how to fix properly the hangs > caused by > insert/removal of mmc card during suspend/resume, and default behavior > of not trusting the card persistence over suspend,
Right; there are two types of driver: ones that can correctly report whether the card has been removed ... and ones that can't That default behavior presumes the latter. The MMC/SD framework doesn't know about these two types (For reference: the easy way to do the former involves setting up the GPIO used for card detect as a (wakeup?) IRQ source. > First of all there are 2 types of removal possible. First > one happens > when system detects that some device is gone. At that point > there is > really no point in syncing it. One suggestion was syncing before suspend... but that would require coordinating the block layer and PM framework. That seems like it'd be generally a wise thing to do; no point in losing the write cache, ever. > The other type of removal is controlled removal, usually on user request. -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
