From: Robin Gong yibin.gong@nxp.com
stable inclusion from stable-5.10.67 commit 300ccb12925289a810861daae67b88517d7895b3 bugzilla: 182619 https://gitee.com/openeuler/kernel/issues/I4EWO7
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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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 Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com
Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/dma/imx-sdma.c | 8 -------- 1 file changed, 8 deletions(-)
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index 16b908c77db3..dd9901a85050 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -379,7 +379,6 @@ 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; }; @@ -985,9 +984,6 @@ static int sdma_load_context(struct sdma_channel *sdmac) 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) @@ -1030,8 +1026,6 @@ static int sdma_load_context(struct sdma_channel *sdmac)
spin_unlock_irqrestore(&sdma->channel_0_lock, flags);
- sdmac->context_loaded = true; - return ret; }
@@ -1070,7 +1064,6 @@ static void sdma_channel_terminate_work(struct work_struct *work) vchan_get_all_descriptors(&sdmac->vc, &head); spin_unlock_irqrestore(&sdmac->vc.lock, flags); vchan_dma_desc_free_list(&sdmac->vc, &head); - sdmac->context_loaded = false; }
static int sdma_terminate_all(struct dma_chan *chan) @@ -1338,7 +1331,6 @@ static void sdma_free_chan_resources(struct dma_chan *chan)
sdmac->event_id0 = 0; sdmac->event_id1 = 0; - sdmac->context_loaded = false;
sdma_set_channel_priority(sdmac, 0);