Re: [U-Boot] [PATCH] MX28: MMC: Avoid DMA DCache race condition

2012-09-06 Thread Stefano Babic
On 01/09/2012 04:18, Marek Vasut wrote: > This patch prevents dcache-related problem. The problem manifested > itself on the SPI driver, this is just a port to the MMC driver. > > The scenario is the same. In case an "mmc read" is issued to a > buffer which was written right before it and data cac

[U-Boot] [PATCH] MX28: MMC: Avoid DMA DCache race condition

2012-08-31 Thread Marek Vasut
This patch prevents dcache-related problem. The problem manifested itself on the SPI driver, this is just a port to the MMC driver. The scenario is the same. In case an "mmc read" is issued to a buffer which was written right before it and data cache is enabled, the cache eviction might happen dur