acpi/acpigen: Constify CST functions' pointers

The `acpigen_write_CST_package` and `acpigen_write_CST_package_entry`
functions don't modify the provided C-state information. So, make the
pointer parameters read-only to enforce this. Also constify arguments
where possible.

Change-Id: I9e18d82ee6c16e4435b8fad6d467e58c33194cf4
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58391
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/include/acpi/acpigen.h b/src/include/acpi/acpigen.h
index c019130e2889..cf14c7f39d0d 100644
--- a/src/include/acpi/acpigen.h
+++ b/src/include/acpi/acpigen.h
@@ -357,8 +357,8 @@ void acpigen_write_PSS_package(u32 coreFreq, u32 power, u32 transLat,
 void acpigen_write_pss_object(const struct acpi_sw_pstate *pstate_values, size_t nentries);
 typedef enum { SW_ALL = 0xfc, SW_ANY = 0xfd, HW_ALL = 0xfe } PSD_coord;
 void acpigen_write_PSD_package(u32 domain, u32 numprocs, PSD_coord coordtype);
-void acpigen_write_CST_package_entry(acpi_cstate_t *cstate);
-void acpigen_write_CST_package(acpi_cstate_t *entry, int nentries);
+void acpigen_write_CST_package_entry(const acpi_cstate_t *cstate);
+void acpigen_write_CST_package(const acpi_cstate_t *entry, int nentries);
 typedef enum { CSD_HW_ALL = 0xfe } CSD_coord;
 void acpigen_write_CSD_package(u32 domain, u32 numprocs, CSD_coord coordtype,
 				u32 index);