From: Robin Gong yibin.gong@nxp.com
commit 8592f02464d52776c5cfae4627c6413b0ae7602d upstream.
This reverts commit ad0d92d7ba6aecbe2705907c38ff8d8be4da1e9c, because in spi-imx case, burst length may be changed dynamically.
Fixes: ad0d92d7ba6a ("dmaengine: imx-sdma: refine to load context only once") Cc: stable@vger.kernel.org Signed-off-by: Robin Gong yibin.gong@nxp.com Acked-by: Sascha Hauer s.hauer@pengutronix.de Tested-by: Richard Leitner richard.leitner@skidata.com Signed-off-by: Shawn Guo shawnguo@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/dma/imx-sdma.c | 8 -------- 1 file changed, 8 deletions(-)
--- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -377,7 +377,6 @@ struct sdma_channel { unsigned long watermark_level; u32 shp_addr, per_addr; enum dma_status status; - bool context_loaded; struct imx_dma_data data; struct work_struct terminate_worker; }; @@ -988,9 +987,6 @@ static int sdma_load_context(struct sdma int ret; unsigned long flags;
- if (sdmac->context_loaded) - return 0; - if (sdmac->direction == DMA_DEV_TO_MEM) load_address = sdmac->pc_from_device; else if (sdmac->direction == DMA_DEV_TO_DEV) @@ -1033,8 +1029,6 @@ static int sdma_load_context(struct sdma
spin_unlock_irqrestore(&sdma->channel_0_lock, flags);
- sdmac->context_loaded = true; - return ret; }
@@ -1074,7 +1068,6 @@ static void sdma_channel_terminate_work( sdmac->desc = NULL; spin_unlock_irqrestore(&sdmac->vc.lock, flags); vchan_dma_desc_free_list(&sdmac->vc, &head); - sdmac->context_loaded = false; }
static int sdma_disable_channel_async(struct dma_chan *chan) @@ -1335,7 +1328,6 @@ static void sdma_free_chan_resources(str
sdmac->event_id0 = 0; sdmac->event_id1 = 0; - sdmac->context_loaded = false;
sdma_set_channel_priority(sdmac, 0);