Constifying "struct snd_soc_ops" moves some data to a read-only section, so increase overall security.

This structure is also part of scripts/const_structs.checkpatch.

As an example, on a x86_64, with allmodconfig: Before: text data bss dec hex filename 6315 3696 0 10011 271b sound/soc/intel/boards/ehl_rt5660.o

After: text data bss dec hex filename 6379 3648 0 10027 272b sound/soc/intel/boards/ehl_rt5660.o

Signed-off-by: Christophe JAILLET christophe.jaillet@wanadoo.fr --- Compile tested only.

I hope that it can be applied with this single patch because all files are in sound/soc/intel/boards/ --- sound/soc/intel/boards/bdw-rt5650.c | 2 +- sound/soc/intel/boards/ehl_rt5660.c | 2 +- sound/soc/intel/boards/kbl_da7219_max98357a.c | 4 ++-- sound/soc/intel/boards/kbl_da7219_max98927.c | 6 +++--- sound/soc/intel/boards/kbl_rt5660.c | 2 +- sound/soc/intel/boards/kbl_rt5663_max98927.c | 8 ++++---- sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c | 6 +++--- sound/soc/intel/boards/sof_es8336.c | 2 +- sound/soc/intel/boards/sof_maxim_common.c | 2 +- sound/soc/intel/boards/sof_maxim_common.h | 2 +- sound/soc/intel/boards/sof_nau8825.c | 2 +- sound/soc/intel/boards/sof_realtek_common.c | 2 +- sound/soc/intel/boards/sof_rt5682.c | 2 +- sound/soc/intel/boards/sof_sdw_common.h | 2 +- sound/soc/intel/boards/sof_sdw_rt_amp.c | 2 +- sound/soc/intel/boards/sof_wm8804.c | 2 +- 16 files changed, 24 insertions(+), 24 deletions(-)

diff --git a/sound/soc/intel/boards/bdw-rt5650.c b/sound/soc/intel/boards/bdw-rt5650.c index 3ae26f21458f..3c7cee03a02e 100644 --- a/sound/soc/intel/boards/bdw-rt5650.c +++ b/sound/soc/intel/boards/bdw-rt5650.c @@ -131,7 +131,7 @@ static int bdw_rt5650_hw_params(struct snd_pcm_substream *substream, return ret; }

-static struct snd_soc_ops bdw_rt5650_ops = { +static const struct snd_soc_ops bdw_rt5650_ops = { .hw_params = bdw_rt5650_hw_params, };

diff --git a/sound/soc/intel/boards/ehl_rt5660.c b/sound/soc/intel/boards/ehl_rt5660.c index 686e60321224..26289e8fdd87 100644 --- a/sound/soc/intel/boards/ehl_rt5660.c +++ b/sound/soc/intel/boards/ehl_rt5660.c @@ -132,7 +132,7 @@ static int rt5660_hw_params(struct snd_pcm_substream *substream, return ret; }

-static struct snd_soc_ops rt5660_ops = { +static const struct snd_soc_ops rt5660_ops = { .hw_params = rt5660_hw_params, };

diff --git a/sound/soc/intel/boards/kbl_da7219_max98357a.c b/sound/soc/intel/boards/kbl_da7219_max98357a.c index 9dbc15f9d1c9..154f6a74ed15 100644 --- a/sound/soc/intel/boards/kbl_da7219_max98357a.c +++ b/sound/soc/intel/boards/kbl_da7219_max98357a.c @@ -354,7 +354,7 @@ static int kabylake_dmic_startup(struct snd_pcm_substream *substream) SNDRV_PCM_HW_PARAM_RATE, &constraints_rates); }

-static struct snd_soc_ops kabylake_dmic_ops = { +static const struct snd_soc_ops kabylake_dmic_ops = { .startup = kabylake_dmic_startup, };

@@ -388,7 +388,7 @@ static int kabylake_refcap_startup(struct snd_pcm_substream *substream) &constraints_16000); }

-static struct snd_soc_ops skylake_refcap_ops = { +static const struct snd_soc_ops skylake_refcap_ops = { .startup = kabylake_refcap_startup, };

diff --git a/sound/soc/intel/boards/kbl_da7219_max98927.c b/sound/soc/intel/boards/kbl_da7219_max98927.c index e662da5af83b..02ed77a07e23 100644 --- a/sound/soc/intel/boards/kbl_da7219_max98927.c +++ b/sound/soc/intel/boards/kbl_da7219_max98927.c @@ -288,7 +288,7 @@ static int kabylake_ssp0_trigger(struct snd_pcm_substream *substream, int cmd) return 0; }

-static struct snd_soc_ops kabylake_ssp0_ops = { +static const struct snd_soc_ops kabylake_ssp0_ops = { .hw_params = kabylake_ssp0_hw_params, .trigger = kabylake_ssp0_trigger, }; @@ -535,7 +535,7 @@ static int kabylake_dmic_startup(struct snd_pcm_substream *substream) SNDRV_PCM_HW_PARAM_RATE, &constraints_rates); }

-static struct snd_soc_ops kabylake_dmic_ops = { +static const struct snd_soc_ops kabylake_dmic_ops = { .startup = kabylake_dmic_startup, };

@@ -569,7 +569,7 @@ static int kabylake_refcap_startup(struct snd_pcm_substream *substream) }

-static struct snd_soc_ops skylake_refcap_ops = { +static const struct snd_soc_ops skylake_refcap_ops = { .startup = kabylake_refcap_startup, };

diff --git a/sound/soc/intel/boards/kbl_rt5660.c b/sound/soc/intel/boards/kbl_rt5660.c index 894d127c482a..66885cb36f24 100644 --- a/sound/soc/intel/boards/kbl_rt5660.c +++ b/sound/soc/intel/boards/kbl_rt5660.c @@ -277,7 +277,7 @@ static int kabylake_rt5660_hw_params(struct snd_pcm_substream *substream, return ret; }

-static struct snd_soc_ops kabylake_rt5660_ops = { +static const struct snd_soc_ops kabylake_rt5660_ops = { .hw_params = kabylake_rt5660_hw_params, };

diff --git a/sound/soc/intel/boards/kbl_rt5663_max98927.c b/sound/soc/intel/boards/kbl_rt5663_max98927.c index e16c42e81eca..9da89436a917 100644 --- a/sound/soc/intel/boards/kbl_rt5663_max98927.c +++ b/sound/soc/intel/boards/kbl_rt5663_max98927.c @@ -489,7 +489,7 @@ static int kabylake_rt5663_hw_params(struct snd_pcm_substream *substream, return ret; }

-static struct snd_soc_ops kabylake_rt5663_ops = { +static const struct snd_soc_ops kabylake_rt5663_ops = { .hw_params = kabylake_rt5663_hw_params, };

@@ -539,7 +539,7 @@ static int kabylake_ssp0_hw_params(struct snd_pcm_substream *substream, return ret; }

-static struct snd_soc_ops kabylake_ssp0_ops = { +static const struct snd_soc_ops kabylake_ssp0_ops = { .hw_params = kabylake_ssp0_hw_params, };

@@ -575,7 +575,7 @@ static int kabylake_dmic_startup(struct snd_pcm_substream *substream) SNDRV_PCM_HW_PARAM_RATE, &constraints_rates); }

-static struct snd_soc_ops kabylake_dmic_ops = { +static const struct snd_soc_ops kabylake_dmic_ops = { .startup = kabylake_dmic_startup, };

@@ -609,7 +609,7 @@ static int kabylake_refcap_startup(struct snd_pcm_substream *substream) &constraints_16000); }

-static struct snd_soc_ops skylake_refcap_ops = { +static const struct snd_soc_ops skylake_refcap_ops = { .startup = kabylake_refcap_startup, };

diff --git a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c index a9501cd106ff..a32ce8f972f3 100644 --- a/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c +++ b/sound/soc/intel/boards/kbl_rt5663_rt5514_max98927.c @@ -424,7 +424,7 @@ static int kabylake_rt5663_hw_params(struct snd_pcm_substream *substream, return ret; }

-static struct snd_soc_ops kabylake_rt5663_ops = { +static const struct snd_soc_ops kabylake_rt5663_ops = { .hw_params = kabylake_rt5663_hw_params, };

@@ -469,7 +469,7 @@ static int kabylake_ssp0_hw_params(struct snd_pcm_substream *substream, return ret; }

-static struct snd_soc_ops kabylake_ssp0_ops = { +static const struct snd_soc_ops kabylake_ssp0_ops = { .hw_params = kabylake_ssp0_hw_params, };

@@ -508,7 +508,7 @@ static int kabylake_dmic_startup(struct snd_pcm_substream *substream) SNDRV_PCM_HW_PARAM_RATE, &constraints_rates); }

-static struct snd_soc_ops kabylake_dmic_ops = { +static const struct snd_soc_ops kabylake_dmic_ops = { .startup = kabylake_dmic_startup, };

diff --git a/sound/soc/intel/boards/sof_es8336.c b/sound/soc/intel/boards/sof_es8336.c index c1fcc156a575..2a88efaa6d26 100644 --- a/sound/soc/intel/boards/sof_es8336.c +++ b/sound/soc/intel/boards/sof_es8336.c @@ -371,7 +371,7 @@ static int sof_es8336_hw_params(struct snd_pcm_substream *substream, }

/* machine stream operations */ -static struct snd_soc_ops sof_es8336_ops = { +static const struct snd_soc_ops sof_es8336_ops = { .hw_params = sof_es8336_hw_params, .trigger = sof_8336_trigger, }; diff --git a/sound/soc/intel/boards/sof_maxim_common.c b/sound/soc/intel/boards/sof_maxim_common.c index 7e1f485dce7a..f49354193f13 100644 --- a/sound/soc/intel/boards/sof_maxim_common.c +++ b/sound/soc/intel/boards/sof_maxim_common.c @@ -141,7 +141,7 @@ int max_98373_trigger(struct snd_pcm_substream *substream, int cmd) } EXPORT_SYMBOL_NS(max_98373_trigger, SND_SOC_INTEL_SOF_MAXIM_COMMON);

-struct snd_soc_ops max_98373_ops = { +const struct snd_soc_ops max_98373_ops = { .hw_params = max_98373_hw_params, .trigger = max_98373_trigger, }; diff --git a/sound/soc/intel/boards/sof_maxim_common.h b/sound/soc/intel/boards/sof_maxim_common.h index 8886f985de68..638fba0b43bc 100644 --- a/sound/soc/intel/boards/sof_maxim_common.h +++ b/sound/soc/intel/boards/sof_maxim_common.h @@ -21,7 +21,7 @@ #define MAX_98373_DEV1_NAME "i2c-" MAX_98373_ACPI_HID ":01"

extern struct snd_soc_dai_link_component max_98373_components[2]; -extern struct snd_soc_ops max_98373_ops; +extern const struct snd_soc_ops max_98373_ops; extern const struct snd_soc_dapm_route max_98373_dapm_routes[];

int max_98373_spk_codec_init(struct snd_soc_pcm_runtime *rtd); diff --git a/sound/soc/intel/boards/sof_nau8825.c b/sound/soc/intel/boards/sof_nau8825.c index dd4dc4ec4255..5e781c45d51a 100644 --- a/sound/soc/intel/boards/sof_nau8825.c +++ b/sound/soc/intel/boards/sof_nau8825.c @@ -115,7 +115,7 @@ static int sof_nau8825_hw_params(struct snd_pcm_substream *substream, return ret; }

-static struct snd_soc_ops sof_nau8825_ops = { +static const struct snd_soc_ops sof_nau8825_ops = { .hw_params = sof_nau8825_hw_params, };

diff --git a/sound/soc/intel/boards/sof_realtek_common.c b/sound/soc/intel/boards/sof_realtek_common.c index 6915ff8b8716..af1654f6d551 100644 --- a/sound/soc/intel/boards/sof_realtek_common.c +++ b/sound/soc/intel/boards/sof_realtek_common.c @@ -499,7 +499,7 @@ static int rt1015_hw_params(struct snd_pcm_substream *substream, return ret; }

-static struct snd_soc_ops rt1015_ops = { +static const struct snd_soc_ops rt1015_ops = { .hw_params = rt1015_hw_params, };

diff --git a/sound/soc/intel/boards/sof_rt5682.c b/sound/soc/intel/boards/sof_rt5682.c index e3a2ec6b4c7c..ced5661d882a 100644 --- a/sound/soc/intel/boards/sof_rt5682.c +++ b/sound/soc/intel/boards/sof_rt5682.c @@ -406,7 +406,7 @@ static int sof_rt5682_hw_params(struct snd_pcm_substream *substream, return ret; }

-static struct snd_soc_ops sof_rt5682_ops = { +static const struct snd_soc_ops sof_rt5682_ops = { .hw_params = sof_rt5682_hw_params, };

diff --git a/sound/soc/intel/boards/sof_sdw_common.h b/sound/soc/intel/boards/sof_sdw_common.h index 94657dd210f5..cc749c8becc0 100644 --- a/sound/soc/intel/boards/sof_sdw_common.h +++ b/sound/soc/intel/boards/sof_sdw_common.h @@ -165,7 +165,7 @@ int sof_sdw_rt_sdca_jack_init(struct snd_soc_card *card, int sof_sdw_rt_sdca_jack_exit(struct snd_soc_card *card, struct snd_soc_dai_link *dai_link);

/* RT1308 I2S support */ -extern struct snd_soc_ops sof_sdw_rt1308_i2s_ops; +extern const struct snd_soc_ops sof_sdw_rt1308_i2s_ops;

/* generic amp support */ int sof_sdw_rt_amp_init(struct snd_soc_card *card, diff --git a/sound/soc/intel/boards/sof_sdw_rt_amp.c b/sound/soc/intel/boards/sof_sdw_rt_amp.c index 1b415708500e..434e59624f69 100644 --- a/sound/soc/intel/boards/sof_sdw_rt_amp.c +++ b/sound/soc/intel/boards/sof_sdw_rt_amp.c @@ -259,7 +259,7 @@ static int rt1308_i2s_hw_params(struct snd_pcm_substream *substream, }

/* machine stream operations */ -struct snd_soc_ops sof_sdw_rt1308_i2s_ops = { +const struct snd_soc_ops sof_sdw_rt1308_i2s_ops = { .hw_params = rt1308_i2s_hw_params, };

diff --git a/sound/soc/intel/boards/sof_wm8804.c b/sound/soc/intel/boards/sof_wm8804.c index 4cb0d463bf40..b2d02cc92a6a 100644 --- a/sound/soc/intel/boards/sof_wm8804.c +++ b/sound/soc/intel/boards/sof_wm8804.c @@ -148,7 +148,7 @@ static int sof_wm8804_hw_params(struct snd_pcm_substream *substream, }

/* machine stream operations */ -static struct snd_soc_ops sof_wm8804_ops = { +static const struct snd_soc_ops sof_wm8804_ops = { .hw_params = sof_wm8804_hw_params, };