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Revert "dmaengine: imx-sdma: refine to load context only once"

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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>
This commit is contained in:
Robin Gong 2021-07-14 18:20:43 +08:00 committed by Greg Kroah-Hartman
parent 86e1abcd14
commit 788122c99d
1 changed files with 0 additions and 8 deletions
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8
drivers/dma/imx-sdma.c
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@ -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_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)
@ -1033,8 +1029,6 @@ static int sdma_load_context(struct sdma_channel *sdmac)
spin_unlock_irqrestore(&sdma->channel_0_lock, flags);
sdmac->context_loaded = true;
return ret;
}
@ -1074,7 +1068,6 @@ static void sdma_channel_terminate_work(struct work_struct *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(struct dma_chan *chan)
sdmac->event_id0 = 0;
sdmac->event_id1 = 0;
sdmac->context_loaded = false;
sdma_set_channel_priority(sdmac, 0);