From: Frank.Li@oss.nxp.com
To: Vinod Koul <vkoul@kernel.org>, Frank Li <Frank.Li@kernel.org>,
Dan Williams <djbw@kernel.org>,
Herbert Xu <herbert@gondor.apana.org.au>,
"David S. Miller" <davem@davemloft.net>,
Jon Mason <jdmason@kudzu.us>, Dave Jiang <dave.jiang@intel.com>,
Allen Hubbe <allenbh@gmail.com>
Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-crypto@vger.kernel.org, imx@lists.linux.dev,
Frank Li <Frank.Li@nxp.com>,
ntb@lists.linux.dev
Subject: [PATCH v2 01/12] async_tx: replace direct ->device_prep*() calls with standard DMA engine API
Date: Wed, 23 Sep 2026 12:19:30 -0400 [thread overview]
Message-ID: <20260923-dmaengine_prep_dma_pq-v2-1-32ed65b8a9b4@nxp.com> (raw)
In-Reply-To: <20260923-dmaengine_prep_dma_pq-v2-0-32ed65b8a9b4@nxp.com>
From: Frank Li <Frank.Li@nxp.com>
DMA engine consumers must not call the channel's device_prep_*() function
pointers directly. Use the standard dmaengine wrapper APIs instead.
Assisted-by: LLM
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
crypto/async_tx/async_memcpy.c | 6 +++---
crypto/async_tx/async_tx.c | 4 ++--
include/linux/async_tx.h | 8 ++------
3 files changed, 7 insertions(+), 11 deletions(-)
diff --git a/crypto/async_tx/async_memcpy.c b/crypto/async_tx/async_memcpy.c
index c538e30e99094..627b6ad9313e0 100644
--- a/crypto/async_tx/async_memcpy.c
+++ b/crypto/async_tx/async_memcpy.c
@@ -58,9 +58,9 @@ async_memcpy(struct page *dest, struct page *src, unsigned int dest_offset,
DMA_FROM_DEVICE);
unmap->len = len;
- tx = device->device_prep_dma_memcpy(chan, unmap->addr[1],
- unmap->addr[0], len,
- dma_prep_flags);
+ tx = dmaengine_prep_dma_memcpy(chan, unmap->addr[1],
+ unmap->addr[0], len,
+ dma_prep_flags);
}
if (tx) {
diff --git a/crypto/async_tx/async_tx.c b/crypto/async_tx/async_tx.c
index ad72057a5e0d7..01ef830675574 100644
--- a/crypto/async_tx/async_tx.c
+++ b/crypto/async_tx/async_tx.c
@@ -79,7 +79,7 @@ async_tx_channel_switch(struct dma_async_tx_descriptor *depend_tx,
/* attached dependency, flush the parent channel */
if (!intr_tx) {
- device->device_issue_pending(chan);
+ dma_async_issue_pending(chan);
return;
}
@@ -113,7 +113,7 @@ async_tx_channel_switch(struct dma_async_tx_descriptor *depend_tx,
intr_tx->tx_submit(intr_tx);
async_tx_ack(intr_tx);
}
- device->device_issue_pending(chan);
+ dma_async_issue_pending(chan);
} else {
if (dma_wait_for_async_tx(depend_tx) != DMA_COMPLETE)
panic("%s: DMA error waiting for depend_tx\n",
diff --git a/include/linux/async_tx.h b/include/linux/async_tx.h
index 1ca9f9e05f4f1..9f7fef19f2142 100644
--- a/include/linux/async_tx.h
+++ b/include/linux/async_tx.h
@@ -87,12 +87,8 @@ struct async_submit_ctl {
*/
static inline void async_tx_issue_pending(struct dma_async_tx_descriptor *tx)
{
- if (likely(tx)) {
- struct dma_chan *chan = tx->chan;
- struct dma_device *dma = chan->device;
-
- dma->device_issue_pending(chan);
- }
+ if (likely(tx))
+ dma_async_issue_pending(tx->chan);
}
#ifdef CONFIG_ARCH_HAS_ASYNC_TX_FIND_CHANNEL
#include <asm/async_tx.h>
--
2.43.0
next prev parent reply other threads:[~2026-09-23 16:19 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-23 16:19 [PATCH v2 00/12] dmaengine: Add dmaengine API to avoid call DMA Engine callback directly Frank.Li
2026-09-23 16:19 ` Frank.Li [this message]
2026-09-23 16:19 ` [PATCH v2 02/12] async_tx: use dmaengine_get_dma_device() instead of chan->device->dev Frank.Li
2026-09-23 16:19 ` [PATCH v2 03/12] dmaengine: add dmaengine_prep_dma_(pq|pq_val|interrupt|xor)() API Frank.Li
2026-09-23 16:19 ` [PATCH v2 04/12] dmaengine: add dmaengine_is_*_aligned() helpers for DMA consumers Frank.Li
2026-09-23 16:19 ` [PATCH v2 05/12] dmaengine: add dmaengine_get_copy_align() and related alignment getter helpers Frank.Li
2026-09-23 16:19 ` [PATCH v2 06/12] dmaengine: add dmaengine_get_cap_mask() and dmaengine_has_cap() helpers Frank.Li
2026-09-23 16:19 ` [PATCH v2 07/12] dmaengine: add dmaengine_get_max_xor() helper Frank.Li
2026-09-23 16:19 ` [PATCH v2 08/12] dmaengine: change dmaengine_get_unmap_data() first arg to dma_chan Frank.Li
2026-09-23 16:19 ` [PATCH v2 09/12] dmaengine: replace dma_maxqp() with dmaengine_maxpq() taking struct dma_chan * Frank.Li
2026-09-23 16:19 ` [PATCH v2 10/12] async_tx: use dmaengine_prep_dma_(pq|pq_val|interrupt|xor) instead of direct callback Frank.Li
2026-09-23 16:19 ` [PATCH v2 11/12] async_tx: convert to dmaengine_is_*_aligned() helpers Frank.Li
2026-09-23 16:19 ` [PATCH v2 12/12] async_tx: replace open-coded cap_mask accesses with dmaengine_has_cap() Frank.Li
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