github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-09-23 22:14:03 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

dmaengine: dw-edma: Add xfer_sz field to struct dw_edma_chunk

Browse Source 
Reusing ll_region.sz as the transfer size is misleading because
ll_region.sz represents the memory size of the EDMA link list, not the
amount of data to be transferred.

Add a new xfer_sz field to explicitly indicate the total transfer size
of a chunk.

Tested-by: Koichiro Den <den@valinux.co.jp>
Tested-By: Devendra Verma <devendra.verma@amd.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260713-edma_ll-v7-2-6fb7498c901e@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Frank Li 2026-07-13 13:03:20 -04:00 committed by Vinod Koul
parent 99c46385ed
commit 0768000306
2 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/dma/dw-edma/dw-edma-core.c
View File

@ -192,7 +192,7 @@ static int dw_edma_start_transfer(struct dw_edma_chan *chan)
return 0;
dw_edma_core_start(dw, child, !desc->xfer_sz);
desc->xfer_sz += child->ll_region.sz;
desc->xfer_sz += child->xfer_sz;
dw_edma_free_burst(child);
list_del(&child->list);
kfree(child);
@ -527,7 +527,7 @@ dw_edma_device_transfer(struct dw_edma_transfer *xfer,
else if (xfer->type == EDMA_XFER_INTERLEAVED)
burst->sz = xfer->xfer.il->sgl[i % fsz].size;
chunk->ll_region.sz += burst->sz;
chunk->xfer_sz += burst->sz;
desc->alloc_sz += burst->sz;
if (dir == DMA_DEV_TO_MEM) {

1
drivers/dma/dw-edma/dw-edma-core.h
View File

@ -57,6 +57,7 @@ struct dw_edma_chunk {
u32 bursts_alloc;
u8 cb;
u32 xfer_sz;
struct dw_edma_region ll_region; /* Linked list */
};