* [PATCH] docs: core-api: Fix the ISA DMA example
@ 2026-09-05 2:23 Karl Mehltretter
0 siblings, 0 replies; only message in thread
From: Karl Mehltretter @ 2026-09-05 2:23 UTC (permalink / raw)
To: Jonathan Corbet
Cc: Karl Mehltretter, Shuah Khan, Randy Dunlap, Andrew Morton,
Pierre Ossman, linux-doc, linux-kernel
The example never matched the ISA DMA API: the functions are named
enable_dma(), disable_dma() and get_dma_residue(), clear_dma_ff() takes
the channel number, and claim_dma_lock() returns an unsigned long.
Fixes: ddb99f3d35b1 ("[PATCH] ISA DMA API documentation")
Assisted-by: LLM
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
---
Documentation/core-api/dma-isa-lpc.rst | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/Documentation/core-api/dma-isa-lpc.rst b/Documentation/core-api/dma-isa-lpc.rst
index 17b193603f0a..296838ff295a 100644
--- a/Documentation/core-api/dma-isa-lpc.rst
+++ b/Documentation/core-api/dma-isa-lpc.rst
@@ -115,17 +115,18 @@ sure that all data has been transferred.
Example::
- int flags, residue;
+ unsigned long flags;
+ int residue;
flags = claim_dma_lock();
- clear_dma_ff();
+ clear_dma_ff(channel);
set_dma_mode(channel, DMA_MODE_WRITE);
set_dma_addr(channel, phys_addr);
set_dma_count(channel, num_bytes);
- dma_enable(channel);
+ enable_dma(channel);
release_dma_lock(flags);
@@ -133,9 +134,9 @@ Example::
flags = claim_dma_lock();
- dma_disable(channel);
+ disable_dma(channel);
- residue = dma_get_residue(channel);
+ residue = get_dma_residue(channel);
if (residue != 0)
printk(KERN_ERR "driver: Incomplete DMA transfer!"
" %d bytes left!\n", residue);
--
2.53.0
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