From: Boojin Kim <[email protected]> The burst size of PL330 DMAC should be aligned with source address, destination address and size. If not, PL330 DMAC HW generates transmit or data mismatch error. This patch adds the condition that checks the align of source and destination address for burst size.
Signed-off-by: Boojin Kim <[email protected]> Signed-off-by: Kukjin Kim <[email protected]> --- drivers/dma/pl330.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index d87d884..c3f7fcb 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -2553,7 +2553,7 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst, burst = pi->pcfg.data_bus_width / 8; while (burst > 1) { - if (!(len % burst)) + if (!(len % burst) && !(dst % burst) && !(src % burst)) break; burst /= 2; } -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
