Re: Unsynchronized access to spi bus by mmc_rescan?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Ping.

On Fri, Apr 22, 2016 at 05:28:42PM -0400, Rich Felker wrote:
> I'm working on a driver for the J-core (http://j-core.org) SPI master,
> which is currently limited to PIO and using the spi-bitbang framework
> (probably not the right thing to use, but planned to change, and seems
> orthogonal to the issue at hand). We're using it to access an SD card
> via the mmc_spi mmc host driver, and experiencing crashes/corruption
> that I tracked down to mmc_rescan (we don't yet have an interrupt for
> media change) happening during SPI message transfers. Which locks are
> supposed to preclude this from happening? Is it likely something wrong
> our driver is using, or is there possibly a general bug in the MMC/SPI
> subsystem(s)?
> 
> Rich
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux USB Devel]     [Linux Media]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux