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ALSA: isa: Mark '*_registered' variables as __ro_after_init

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The '*_registered' variables are initialized only during the init
phase in the '__init' functions and never changed. So, mark them as
__ro_after_init to reduce the attack surface.

Signed-off-by: Len Bao <len.bao@gmx.us>
Link: https://patch.msgid.link/20260524154051.45258-1-len.bao@gmx.us
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Len Bao 2026-05-24 15:40:49 +00:00 committed by Takashi Iwai
parent a7147920c4
commit 177be86ecc
9 changed files with 21 additions and 21 deletions
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4
sound/isa/cmi8330.c
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@ -103,8 +103,8 @@ MODULE_PARM_DESC(mpuport, "MPU-401 port # for CMI8330/CMI8329 driver.");
module_param_hw_array(mpuirq, int, irq, NULL, 0444);
MODULE_PARM_DESC(mpuirq, "IRQ # for CMI8330/CMI8329 MPU-401 port.");
#ifdef CONFIG_PNP
static int isa_registered;
static int pnp_registered;
static int isa_registered __ro_after_init;
static int pnp_registered __ro_after_init;
#endif
#define CMI8330_RMUX3D 16

6
sound/isa/cs423x/cs4236.c
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@ -69,9 +69,9 @@ module_param_hw_array(dma2, int, dma, NULL, 0444);
MODULE_PARM_DESC(dma2, "DMA2 # for " IDENT " driver.");
#ifdef CONFIG_PNP
static int isa_registered;
static int pnpc_registered;
static int pnp_registered;
static int isa_registered __ro_after_init;
static int pnpc_registered __ro_after_init;
static int pnp_registered __ro_after_init;
#endif /* CONFIG_PNP */
struct snd_card_cs4236 {

6
sound/isa/es18xx.c
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@ -1924,9 +1924,9 @@ module_param_hw_array(dma2, int, dma, NULL, 0444);
MODULE_PARM_DESC(dma2, "DMA 2 # for ES18xx driver.");
#ifdef CONFIG_PNP
static int isa_registered;
static int pnp_registered;
static int pnpc_registered;
static int isa_registered __ro_after_init;
static int pnp_registered __ro_after_init;
static int pnpc_registered __ro_after_init;
static const struct pnp_device_id snd_audiodrive_pnpbiosids[] = {
{ .id = "ESS1869" },

4
sound/isa/gus/interwave.c
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@ -111,8 +111,8 @@ struct snd_interwave {
#ifdef CONFIG_PNP
static int isa_registered;
static int pnp_registered;
static int isa_registered __ro_after_init;
static int pnp_registered __ro_after_init;
static const struct pnp_card_device_id snd_interwave_pnpids[] = {
#ifndef SNDRV_STB

4
sound/isa/msnd/msnd_pinnacle.c
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@ -1199,8 +1199,8 @@ static int snd_msnd_pnp_resume(struct pnp_card_link *pcard)
}
#endif
static int isa_registered;
static int pnp_registered;
static int isa_registered __ro_after_init;
static int pnp_registered __ro_after_init;
static const struct pnp_card_device_id msnd_pnpids[] = {
/* Pinnacle PnP */

6
sound/isa/opl3sa2.c
View File

@ -69,9 +69,9 @@ module_param_array(opl3sa3_ymode, int, NULL, 0444);
MODULE_PARM_DESC(opl3sa3_ymode, "Speaker size selection for 3D Enhancement mode: Desktop/Large Notebook/Small Notebook/HiFi.");
#ifdef CONFIG_PNP
static int isa_registered;
static int pnp_registered;
static int pnpc_registered;
static int isa_registered __ro_after_init;
static int pnp_registered __ro_after_init;
static int pnpc_registered __ro_after_init;
#endif
/* control ports */

4
sound/isa/sb/sb16.c
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@ -99,8 +99,8 @@ MODULE_PARM_DESC(seq_ports, "Number of sequencer ports for WaveTable synth.");
#endif
#ifdef CONFIG_PNP
static int isa_registered;
static int pnp_registered;
static int isa_registered __ro_after_init;
static int pnp_registered __ro_after_init;
#endif
struct snd_card_sb16 {

4
sound/isa/sscape.c
View File

@ -71,8 +71,8 @@ module_param_array(joystick, bool, NULL, 0444);
MODULE_PARM_DESC(joystick, "Enable gameport.");
#ifdef CONFIG_PNP
static int isa_registered;
static int pnp_registered;
static int isa_registered __ro_after_init;
static int pnp_registered __ro_after_init;
static const struct pnp_card_device_id sscape_pnpids[] = {
{ .id = "ENS3081", .devs = { { "ENS0000" } } }, /* Soundscape PnP */

4
sound/isa/wavefront/wavefront.c
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@ -71,8 +71,8 @@ module_param_array(use_cs4232_midi, bool, NULL, 0444);
MODULE_PARM_DESC(use_cs4232_midi, "Use CS4232 MPU-401 interface (inaccessibly located inside your computer)");
#ifdef CONFIG_PNP
static int isa_registered;
static int pnp_registered;
static int isa_registered __ro_after_init;
static int pnp_registered __ro_after_init;
static const struct pnp_card_device_id snd_wavefront_pnpids[] = {
/* Tropez */