This reverts commit 47ec7f09bc107720905c96bc37771e4ed1ff0aed.
This is no longer necessary now that all assumptions about the order of
completions have been removed from the dmaengine client API.
Signed-off-by: Ben Walker <benjamin.walker@xxxxxxxxx>
Reviewed-by: Dave Jiang <dave.jiang@xxxxxxxxx>
---
.../driver-api/dmaengine/provider.rst | 19 -------------------
drivers/dma/dmatest.c | 11 +----------
drivers/dma/idxd/dma.c | 1 -
include/linux/dmaengine.h | 2 --
4 files changed, 1 insertion(+), 32 deletions(-)
diff --git a/Documentation/driver-api/dmaengine/provider.rst b/Documentation/driver-api/dmaengine/provider.rst
index a5539f816d125..8d1510c8cb66f 100644
--- a/Documentation/driver-api/dmaengine/provider.rst
+++ b/Documentation/driver-api/dmaengine/provider.rst
@@ -258,22 +258,6 @@ Currently, the types available are:
want to transfer a portion of uncompressed data directly to the
display to print it
-- DMA_COMPLETION_NO_ORDER
-
- - The device does not support in order completion.
-
- - The driver should return DMA_OUT_OF_ORDER for device_tx_status if
- the device is setting this capability.
-
- - All cookie tracking and checking API should be treated as invalid if
- the device exports this capability.
-
- - At this point, this is incompatible with polling option for dmatest.
-
- - If this cap is set, the user is recommended to provide an unique
- identifier for each descriptor sent to the DMA device in order to
- properly track the completion.
-
- DMA_REPEAT
- The device supports repeated transfers. A repeated transfer, indicated by
@@ -457,9 +441,6 @@ supported.
- In the case of a cyclic transfer, it should only take into
account the total size of the cyclic buffer.
- - Should return DMA_OUT_OF_ORDER if the device does not support in order
- completion and is completing the operation out of order.
-
- This function can be called in an interrupt context.
- device_config
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 76a027e95d2aa..2febc179a7074 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -838,10 +838,7 @@ static int dmatest_func(void *data)
result("test timed out", total_tests, src->off, dst->off,
len, 0);
goto error_unmap_continue;
- } else if (status != DMA_COMPLETE &&
- !(dma_has_cap(DMA_COMPLETION_NO_ORDER,
- dev->cap_mask) &&
- status == DMA_OUT_OF_ORDER)) {
+ } else if (status != DMA_COMPLETE) {
result(status == DMA_ERROR ?
"completion error status" :
"completion busy status", total_tests, src->off,
@@ -1019,12 +1016,6 @@ static int dmatest_add_channel(struct dmatest_info *info,
dtc->chan = chan;
INIT_LIST_HEAD(&dtc->threads);
- if (dma_has_cap(DMA_COMPLETION_NO_ORDER, dma_dev->cap_mask) &&
- info->params.polled) {
- info->params.polled = false;
- pr_warn("DMA_COMPLETION_NO_ORDER, polled disabled\n");
- }
-
if (dma_has_cap(DMA_MEMCPY, dma_dev->cap_mask)) {
if (dmatest == 0) {
cnt = dmatest_add_threads(info, dtc, DMA_MEMCPY);
diff --git a/drivers/dma/idxd/dma.c b/drivers/dma/idxd/dma.c
index 87749efec311b..071aafec3de1b 100644
--- a/drivers/dma/idxd/dma.c
+++ b/drivers/dma/idxd/dma.c
@@ -296,7 +296,6 @@ int idxd_register_dma_device(struct idxd_device *idxd)
dma_cap_set(DMA_INTERRUPT, dma->cap_mask);
dma_cap_set(DMA_PRIVATE, dma->cap_mask);
- dma_cap_set(DMA_COMPLETION_NO_ORDER, dma->cap_mask);
dma->device_release = idxd_dma_release;
dma->device_prep_dma_interrupt = idxd_dma_prep_interrupt;
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 72b7d51fe41de..59c7f67cb3b5a 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -39,7 +39,6 @@ enum dma_status {
DMA_IN_PROGRESS,
DMA_PAUSED,
DMA_ERROR,
- DMA_OUT_OF_ORDER,
};
/**
@@ -62,7 +61,6 @@ enum dma_transaction_type {
DMA_SLAVE,
DMA_CYCLIC,
DMA_INTERLEAVE,
- DMA_COMPLETION_NO_ORDER,
DMA_REPEAT,
DMA_LOAD_EOT,
/* last transaction type for creation of the capabilities mask */
--
2.37.3
