diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2020-08-25 08:46:17 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-08-25 15:48:53 +0530 |
| commit | 0661cef675d37e2c4b66a996389ebeae8568e49e (patch) | |
| tree | 4a9228abed52c76936b878be97127e1199d175a2 /drivers | |
| parent | e097eb7473d9e70da9e03276f61cd392ccb9d79f (diff) | |
| download | linux-0661cef675d37e2c4b66a996389ebeae8568e49e.tar.bz2 | |
dmaengine: pl330: Fix burst length if burst size is smaller than bus width
Move the burst len fixup after setting the generic value for it. This
finally enables the fixup introduced by commit 137bd11090d8 ("dmaengine:
pl330: Align DMA memcpy operations to MFIFO width"), which otherwise was
overwritten by the generic value.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 137bd11090d8 ("dmaengine: pl330: Align DMA memcpy operations to MFIFO width")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20200825064617.16193-1-m.szyprowski@samsung.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | 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 2c508ee672b9..e010064d8846 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -2801,6 +2801,7 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst, while (burst != (1 << desc->rqcfg.brst_size)) desc->rqcfg.brst_size++; + desc->rqcfg.brst_len = get_burst_len(desc, len); /* * If burst size is smaller than bus width then make sure we only * transfer one at a time to avoid a burst stradling an MFIFO entry. @@ -2808,7 +2809,6 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst, if (desc->rqcfg.brst_size * 8 < pl330->pcfg.data_bus_width) desc->rqcfg.brst_len = 1; - desc->rqcfg.brst_len = get_burst_len(desc, len); desc->bytes_requested = len; desc->txd.flags = flags; |