[PATCH] docs: core-api: Fix the ISA DMA example

[Karl Mehltretter <kmehltretter@gmail.com>]

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