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platform/x86/intel/vsec: Make driver_data info const

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Treat PCI id->driver_data (intel_vsec_platform_info) as read-only by making
vsec_priv->info a const pointer and updating all function signatures to
accept const intel_vsec_platform_info *.

This improves const-correctness and clarifies that the platform info data
from the driver_data table is not meant to be modified at runtime.

No functional changes intended.

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Link: https://patch.msgid.link/20260313015202.3660072-3-david.e.box@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
David E. Box 2026-03-12 18:51:41 -07:00 committed by Ilpo Järvinen
parent 904b333fc5
commit 9577c74c96
No known key found for this signature in database
GPG Key ID: 59AC4F6153E5CE31
2 changed files with 12 additions and 12 deletions
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20
drivers/platform/x86/intel/vsec.c
View File

@ -42,7 +42,7 @@ enum vsec_device_state {
};
struct vsec_priv {
struct intel_vsec_platform_info *info;
const struct intel_vsec_platform_info *info;
struct device *suppliers[VSEC_FEATURE_COUNT];
struct oobmsm_plat_info plat_info;
enum vsec_device_state state[VSEC_FEATURE_COUNT];
@ -270,7 +270,7 @@ int intel_vsec_add_aux(struct pci_dev *pdev, struct device *parent,
EXPORT_SYMBOL_NS_GPL(intel_vsec_add_aux, "INTEL_VSEC");
static int intel_vsec_add_dev(struct pci_dev *pdev, struct intel_vsec_header *header,
struct intel_vsec_platform_info *info,
const struct intel_vsec_platform_info *info,
unsigned long cap_id, u64 base_addr)
{
struct intel_vsec_device __free(kfree) *intel_vsec_dev = NULL;
@ -406,7 +406,7 @@ static int get_cap_id(u32 header_id, unsigned long *cap_id)
static int intel_vsec_register_device(struct pci_dev *pdev,
struct intel_vsec_header *header,
struct intel_vsec_platform_info *info,
const struct intel_vsec_platform_info *info,
u64 base_addr)
{
const struct vsec_feature_dependency *consumer_deps;
@ -452,7 +452,7 @@ static int intel_vsec_register_device(struct pci_dev *pdev,
}
static bool intel_vsec_walk_header(struct pci_dev *pdev,
struct intel_vsec_platform_info *info)
const struct intel_vsec_platform_info *info)
{
struct intel_vsec_header **header = info->headers;
bool have_devices = false;
@ -468,7 +468,7 @@ static bool intel_vsec_walk_header(struct pci_dev *pdev,
}
static bool intel_vsec_walk_dvsec(struct pci_dev *pdev,
struct intel_vsec_platform_info *info)
const struct intel_vsec_platform_info *info)
{
bool have_devices = false;
int pos = 0;
@ -519,7 +519,7 @@ static bool intel_vsec_walk_dvsec(struct pci_dev *pdev,
}
static bool intel_vsec_walk_vsec(struct pci_dev *pdev,
struct intel_vsec_platform_info *info)
const struct intel_vsec_platform_info *info)
{
bool have_devices = false;
int pos = 0;
@ -565,7 +565,7 @@ static bool intel_vsec_walk_vsec(struct pci_dev *pdev,
}
int intel_vsec_register(struct pci_dev *pdev,
struct intel_vsec_platform_info *info)
const struct intel_vsec_platform_info *info)
{
if (!pdev || !info || !info->headers)
return -EINVAL;
@ -578,7 +578,7 @@ int intel_vsec_register(struct pci_dev *pdev,
EXPORT_SYMBOL_NS_GPL(intel_vsec_register, "INTEL_VSEC");
static bool intel_vsec_get_features(struct pci_dev *pdev,
struct intel_vsec_platform_info *info)
const struct intel_vsec_platform_info *info)
{
bool found = false;
@ -622,7 +622,7 @@ static void intel_vsec_skip_missing_dependencies(struct pci_dev *pdev)
static int intel_vsec_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct intel_vsec_platform_info *info;
const struct intel_vsec_platform_info *info;
struct vsec_priv *priv;
int num_caps, ret;
int run_once = 0;
@ -633,7 +633,7 @@ static int intel_vsec_pci_probe(struct pci_dev *pdev, const struct pci_device_id
return ret;
pci_save_state(pdev);
info = (struct intel_vsec_platform_info *)id->driver_data;
info = (const struct intel_vsec_platform_info *)id->driver_data;
if (!info)
return -EINVAL;

4
include/linux/intel_vsec.h
View File

@ -200,13 +200,13 @@ static inline struct intel_vsec_device *auxdev_to_ivdev(struct auxiliary_device
#if IS_ENABLED(CONFIG_INTEL_VSEC)
int intel_vsec_register(struct pci_dev *pdev,
struct intel_vsec_platform_info *info);
const struct intel_vsec_platform_info *info);
int intel_vsec_set_mapping(struct oobmsm_plat_info *plat_info,
struct intel_vsec_device *vsec_dev);
struct oobmsm_plat_info *intel_vsec_get_mapping(struct pci_dev *pdev);
#else
static inline int intel_vsec_register(struct pci_dev *pdev,
struct intel_vsec_platform_info *info)
const struct intel_vsec_platform_info *info)
{
return -ENODEV;
}