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ASoC: renesas: fsi: Constify struct fsi_stream_handler

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'struct fsi_stream_handler' is not modified in this driver.

Constifying this structure moves some data to a read-only section, so
increases overall security, especially when the structure holds some
function pointers.

On a x86_64, with allmodconfig:
Before:
======
   text	   data	    bss	    dec	    hex	filename
  51837	  12312	     64	  64213	   fad5	sound/soc/renesas/fsi.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
  52125	  12024	     64	  64213	   fad5	sound/soc/renesas/fsi.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/88ca34df9006b74a7596b91714e700bcff666c4b.1761507792.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Christophe JAILLET
2025-10-26 20:43:36 +01:00
committed by Mark Brown
parent c17fa4cbc5
commit d29479abad
1 changed files with 4 additions and 4 deletions
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8
sound/soc/renesas/fsi.c
View File

@@ -220,7 +220,7 @@ struct fsi_stream {
/*
* these are initialized by fsi_handler_init()
*/
struct fsi_stream_handler *handler;
const struct fsi_stream_handler *handler;
struct fsi_priv *priv;
/*
@@ -1215,13 +1215,13 @@ static int fsi_pio_pop_init(struct fsi_priv *fsi, struct fsi_stream *io)
return 0;
}
static struct fsi_stream_handler fsi_pio_push_handler = {
static const struct fsi_stream_handler fsi_pio_push_handler = {
.init = fsi_pio_push_init,
.transfer = fsi_pio_push,
.start_stop = fsi_pio_start_stop,
};
static struct fsi_stream_handler fsi_pio_pop_handler = {
static const struct fsi_stream_handler fsi_pio_pop_handler = {
.init = fsi_pio_pop_init,
.transfer = fsi_pio_pop,
.start_stop = fsi_pio_start_stop,
@@ -1418,7 +1418,7 @@ static int fsi_dma_remove(struct fsi_priv *fsi, struct fsi_stream *io)
return 0;
}
static struct fsi_stream_handler fsi_dma_push_handler = {
static const struct fsi_stream_handler fsi_dma_push_handler = {
.init = fsi_dma_init,
.probe = fsi_dma_probe,
.transfer = fsi_dma_transfer,