On Fri, 2014-05-30 at 11:06 +0200, Hans de Goede wrote: > The DMA code in sunxi_mmc.c is broken. mmc_trans_data_by_dma() allocates the > dma descriptors on the stack,
Oh dear! > and then exits while the dma transfer is in > progress, so the dma engine is reading stack memory which at that point may > be re-used. So far we've gotten away with this by luck, but recent u-boot > changes have shifted the stack start address by 16 bytes, which combined > with dma alignment now exposes this problem. > > Since we end up just busy waiting for the dma engine anyway, this commit > fixes things by simply removing the dma code, resulting in smaller bug-free > code. > > Signed-off-by: Hans de Goede <[email protected]> Acked-by: Ian Campbell <[email protected]> _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
