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ACPI: PMIC: Constify struct pmic_table

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'struct pmic_table' is not modified in these drivers.

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

On a x86_64, with allmodconfig, as an example:
Before:
======
   text	   data	    bss	    dec	    hex	filename
   3811	    786	      0	   4597	   11f5	drivers/acpi/pmic/intel_pmic_xpower.o

   text	   data	    bss	    dec	    hex	filename
   4147	    450	      0	   4597	   11f5	drivers/acpi/pmic/intel_pmic_xpower.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://patch.msgid.link/a6c9b1bcdf259adabbcaf91183d3f5ab87a98600.1719644292.git.christophe.jaillet@wanadoo.fr
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Christophe JAILLET 2024-06-29 08:58:42 +02:00 • committed by Rafael J. Wysocki
parent f42cfd5cec
commit cfff1997aa
7 changed files with 12 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/acpi/pmic/intel_pmic.c
View file

@ -31,7 +31,7 @@ struct intel_pmic_opregion {
static struct intel_pmic_opregion *intel_pmic_opregion;
static int pmic_get_reg_bit(int address, struct pmic_table *table,
static int pmic_get_reg_bit(int address, const struct pmic_table *table,
int count, int *reg, int *bit)
{
int i;

4
drivers/acpi/pmic/intel_pmic.h
View file

@ -21,9 +21,9 @@ struct intel_pmic_opregion_data {
u32 reg_address, u32 value, u32 mask);
int (*lpat_raw_to_temp)(struct acpi_lpat_conversion_table *lpat_table,
int raw);
struct pmic_table *power_table;
const struct pmic_table *power_table;
int power_table_count;
struct pmic_table *thermal_table;
const struct pmic_table *thermal_table;
int thermal_table_count;
/* For generic exec_mipi_pmic_seq_element handling */
int pmic_i2c_address;

4
drivers/acpi/pmic/intel_pmic_bxtwc.c
View file

@ -24,7 +24,7 @@
#define VSWITCH1_OUTPUT BIT(4)
#define VUSBPHY_CHARGE BIT(1)
static struct pmic_table power_table[] = {
static const struct pmic_table power_table[] = {
{
.address = 0x0,
.reg = 0x63,
@ -177,7 +177,7 @@ static struct pmic_table power_table[] = {
} /* MOFF -> MODEMCTRL Bit 0 */
};
static struct pmic_table thermal_table[] = {
static const struct pmic_table thermal_table[] = {
{
.address = 0x00,
.reg = 0x4F39

4
drivers/acpi/pmic/intel_pmic_bytcrc.c
View file

@ -16,7 +16,7 @@
#define PMIC_A0LOCK_REG 0xc5
static struct pmic_table power_table[] = {
static const struct pmic_table power_table[] = {
/* {
.address = 0x00,
.reg = ??,
@ -134,7 +134,7 @@ static struct pmic_table power_table[] = {
}, /* V105 -> V1P05S, L2 SRAM */
};
static struct pmic_table thermal_table[] = {
static const struct pmic_table thermal_table[] = {
{
.address = 0x00,
.reg = 0x75

4
drivers/acpi/pmic/intel_pmic_chtdc_ti.c
View file

@ -23,7 +23,7 @@
#define CHTDC_TI_BPTHERM 0x58
#define CHTDC_TI_GPADC 0x5a
static struct pmic_table chtdc_ti_power_table[] = {
static const struct pmic_table chtdc_ti_power_table[] = {
{ .address = 0x00, .reg = 0x41 }, /* LDO1 */
{ .address = 0x04, .reg = 0x42 }, /* LDO2 */
{ .address = 0x08, .reg = 0x43 }, /* LDO3 */
@ -39,7 +39,7 @@ static struct pmic_table chtdc_ti_power_table[] = {
{ .address = 0x30, .reg = 0x4e }, /* LD14 */
};
static struct pmic_table chtdc_ti_thermal_table[] = {
static const struct pmic_table chtdc_ti_thermal_table[] = {
{
.address = 0x00,
.reg = CHTDC_TI_GPADC

2
drivers/acpi/pmic/intel_pmic_chtwc.c
View file

@ -70,7 +70,7 @@
* "regulator: whiskey_cove: implements Whiskey Cove pmic VRF support"
* https://github.com/intel-aero/meta-intel-aero/blob/master/recipes-kernel/linux/linux-yocto/0019-regulator-whiskey_cove-implements-WhiskeyCove-pmic-V.patch
*/
static struct pmic_table power_table[] = {
static const struct pmic_table power_table[] = {
{
.address = 0x0,
.reg = CHT_WC_V1P8A_CTRL,

4
drivers/acpi/pmic/intel_pmic_xpower.c
View file

@ -26,7 +26,7 @@
#define AXP288_ADC_TS_CURRENT_ON_ONDEMAND (2 << 0)
#define AXP288_ADC_TS_CURRENT_ON (3 << 0)
static struct pmic_table power_table[] = {
static const struct pmic_table power_table[] = {
{
.address = 0x00,
.reg = 0x13,
@ -129,7 +129,7 @@ static struct pmic_table power_table[] = {
};
/* TMP0 - TMP5 are the same, all from GPADC */
static struct pmic_table thermal_table[] = {
static const struct pmic_table thermal_table[] = {
{
.address = 0x00,
.reg = XPOWER_GPADC_LOW