tree 5811fc0b75149a20fb5cdc7102d697ec699d005c
parent a584bff5efae8c1d026e3a930e3d13a90264fafc
author Anatolij Gustschin <agust@denx.de> 1290447318 +0100
committer Dan Williams <dan.j.williams@intel.com> 1291503826 -0800

dmaengine: imx-sdma: fix bug in buffer descriptor initialization

Currently while submitting scatterlists with more than one SG
entry the DMA buffer address from the first SG entry is inserted
into all initialized DMA buffer descriptors. This is due to the
typo in the for_each_sg() loop where the scatterlist pointer is
used for obtaining the DMA buffer address and _not_ the SG list
iterator.

As a result all received data will be written only into the first
DMA buffer while reading. While writing the data from the first
DMA buffer is send to the device multiple times. This caused
the filesystem destruction on the MMC card when using DMA in
mxcmmc driver.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>