6 Sep
2012
6 Sep
'12
2:20 p.m.
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 cache is enabled, the cache eviction might happen during the DMA transfer into the buffer, therefore corrupting the buffer. Clear any cache lines that might contain the buffer to prevent such issue.
Signed-off-by: Marek Vasut marex@denx.de Cc: Fabio Estevam festevam@gmail.com Cc: Otavio Salvador otavio@ossystems.com.br Cc: Stefano Babic sbabic@denx.de
Applied to u-boot-imx, thanks.
Best regards, Stefano Babic
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