[bootlin/training-materials updates] master: labs/kernel-serial-dma: adjust example about fifo_dma_addr (c1994c3d)

[Thomas Petazzoni]

Repository : https://github.com/bootlin/training-materials
On branch  : master
Link       : https://github.com/bootlin/training-materials/commit/c1994c3d58b1e7e9090dac63878076afdf2fc08b

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commit c1994c3d58b1e7e9090dac63878076afdf2fc08b
Author: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
Date:   Fri Apr 21 09:16:06 2023 +0200

    labs/kernel-serial-dma: adjust example about fifo_dma_addr
    
    fifo_dma_addr is a member of the "serial" structure, so there's no
    need to have a local variable of the same name, which isn't used in
    the example.
    
    Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>


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c1994c3d58b1e7e9090dac63878076afdf2fc08b
 labs/kernel-serial-dma/kernel-serial-dma.tex | 1 -
 1 file changed, 1 deletion(-)

diff --git a/labs/kernel-serial-dma/kernel-serial-dma.tex b/labs/kernel-serial-dma/kernel-serial-dma.tex
index 27ed034c..46e2592b 100644
--- a/labs/kernel-serial-dma/kernel-serial-dma.tex
+++ b/labs/kernel-serial-dma/kernel-serial-dma.tex
@@ -89,7 +89,6 @@ transfers:
 
 \begin{verbatim}
 struct dma_slave_config txconf = {};
-dma_addr_t fifo_dma_addr;
 
 serial->fifo_dma_addr = dma_map_resource(dev, serial->res->start + UART_TX * 4,
                                          4, DMA_TO_DEVICE, 0);