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ASoC: SOF: mediatek: Constify struct mtk_adsp_ipc_ops

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'struct mtk_adsp_ipc_ops' is not modified in these drivers.

Constifying this structure moves some data to a read-only section, so
increase overall security.

In order to do it, "struct mtk_adsp_ipc" also needs to be adjusted to this
new const qualifier.

On a x86_64, with allmodconfig:
Before:
======
   text	   data	    bss	    dec	    hex	filename
  15533	   2383	      0	  17916	   45fc	sound/soc/sof/mediatek/mt8195/mt8195.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
  15557	   2367	      0	  17924	   4604	sound/soc/sof/mediatek/mt8195/mt8195.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://msgid.link/r/a45d6b2b5ec040ea0fc78fca662c2dca3f13a49f.1718312321.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Christophe JAILLET 2024-06-13 22:59:09 +02:00 committed by Mark Brown
parent 2618b2ec8d
commit 1c75adb22d
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
3 changed files with 3 additions and 3 deletions
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2
include/linux/firmware/mediatek/mtk-adsp-ipc.h
View File

@ -40,7 +40,7 @@ struct mtk_adsp_chan {
struct mtk_adsp_ipc {
struct mtk_adsp_chan chans[MTK_ADSP_MBOX_NUM];
struct device *dev;
struct mtk_adsp_ipc_ops *ops;
const struct mtk_adsp_ipc_ops *ops;
void *private_data;
};

2
sound/soc/sof/mediatek/mt8186/mt8186.c
View File

@ -82,7 +82,7 @@ static void mt8186_dsp_handle_request(struct mtk_adsp_ipc *ipc)
}
}
static struct mtk_adsp_ipc_ops dsp_ops = {
static const struct mtk_adsp_ipc_ops dsp_ops = {
.handle_reply = mt8186_dsp_handle_reply,
.handle_request = mt8186_dsp_handle_request,
};

2
sound/soc/sof/mediatek/mt8195/mt8195.c
View File

@ -82,7 +82,7 @@ static void mt8195_dsp_handle_request(struct mtk_adsp_ipc *ipc)
}
}
static struct mtk_adsp_ipc_ops dsp_ops = {
static const struct mtk_adsp_ipc_ops dsp_ops = {
.handle_reply = mt8195_dsp_handle_reply,
.handle_request = mt8195_dsp_handle_request,
};